Astronomy Day 2019 in Victoria

Posted by as Events, Special Events

The Royal Astronomical Society of Canada and the Royal BC Museum present

International Astronomy Day

at the Royal BC Museum

Press Release

Saturday, April 27, 2019

Amazing Astronomical Activities for all Ages!

Astronomy Day 2019 in Victoria poster
Astronomy Day 2019 in Victoria (printable poster – 201k PDF) – please spread the word and stick a reminder on your fridge

All Astronomy Day activities are FREE and available to the general public. Membership in RASC is not required.

Regular admission applies to the Royal BC Museum and IMAX Theatre.

Telescope at Astronomy Day 2017

Royal BC Museum – 10AM to 4PM

675 Belleville Street, Victoria

  • Interactive activities outside on the plaza
    • View the Sun safely through solar telescopes (weather permitting)
  • Interactive activities inside in Clifford Carl Hall (Museum main level)
    • Telescope-making – grind a mirror and build your own telescope
    • Telescope show-and-tell – try out telescopes and ask questions
    • Astrophotography – take photos of the night sky with your own camera
    • Children’s astro crafts – kids make their own astronomy and space souvenirs
    • Ask an Astronomer – find answers to those questions about astronomy and space you always wanted to ask
    • Light-based Science – light is energy, and energy is a big part of our Universe
    • Responsible Lighting – get pointers on how to reduce your own light pollution, and feel better for it
    • Planetarium – cruise the night sky during the day while sitting on a couch

Presentations in Newcombe Auditorium

  • 11:00AM – Exploring a New World on the Edge of the Solar System, New Horizons and 2014 MU69 – by famed solar system expert JJ Kavelaars of the NRC. Poster (837kb pdf)
  • 12:00 Noon – Space Suite I – Our wondrous universe set to a timeless score – presented by Knowledge Network and Two Story Productions. Poster (837kb pdf)
  • 1:00PM – Observing Planet Formation around Young Stars – planetary researcher Ruobing (Robin) Dong from U Vic. Poster (577kb pdf)
  • 2:00PM – Space Suite II – Our wondrous universe set to a timeless score – presented by Knowledge Network and Two Story Productions. Poster (837kb pdf)
  • 2:30PM – Science & Storytelling: How discoveries of new worlds help tell stories of family – Elizabeth Tasker and Ria Voros. The two authors will discuss how they came to work together unexpectedly through Ria’s novel. Poster (2Mb pdf)
    • Elizabeth Tasker is an Astrophysicist at the Institute for Space and Astronautical Science at the Japan Aerospace Exploration Agency. Her forthcoming popular science book is “The Planet Factory”, on planet formation and exoplanets. The updated paperback edition comes out in Canada late April.
    • Ria Voros is a local Young Adult novelist whose forthcoming book is coincidentally titled “The Centre of the Universe”. In this story 17 year old Grace’s mother is missing. Grace is obsessed with exoplanets and she meets Elizabeth a few times in the book.

Centre of the Universe and the Observatory – 7:30PM to 11PM

The Hon. Judith Guichon, Lieutenant Governor looking through Chuck Filnesss' telescope

Observatory Hill, 5071 West Saanich Road, Saanich

  • Plaskett telescope tours
  • Observing through telescopes
  • Lecture – 8:30PM & 9:30PM – Science & Storytelling: How discoveries of new worlds help tell stories of family – Elizabeth Tasker and Ria Voros
  • Only holders of (free) tickets will be admitted to this evening event!
  • Click Here to Reserve Your Tickets – currently sold out, but click the link to check back later!

Lauri Roche awarded the RASC Service Award for 2019

Posted by as News

I’m pleased to announce that our own Lauri Roche has won the RASC Service Award.

The Service Award is a major award of the Society given to a member in recognition of outstanding service, rendered over an extended period of time, where such service has had a major impact on the work of the Society and/or of a Centre of the Society.

We all know the many things Lauri does in the Victoria Centre, and at the national level she has also made major contributions, including her work with education programs.

Congratulations Lauri!

Chris Gainor, Ph.D.
President
Royal Astronomical Society of Canada

Lauri Roche

Lauri Roche has been a member of RASC since 1995. She was an elementary and middle school teacher for many years, using her Masters of Education from Carlton effectively to support kids with a wide range of disabilities as a special education teacher. Lauri switched to teaching grade 7-8 math and science through to her retirement, and she continues to substitute teach those subjects, and tutors students as well.

Lauri has been active in Victoria Centre, volunteering for or leading countless public outreach events, including: International Astronomy Day, public nights at the Dominion Astrophysical Observatory (DAO), International Year of Astronomy (IYA 2009), Vancouver Island Regional Science Fairs, numerous public observing events, and bringing astronomy to the very popular Saanich (agricultural) Fair.

RASC booth at the Saanich Fair – 2009

Lauri is also active at the National level of RASC, contributing to the Education and Public Outreach (EPO) committee. During 2018, she co-hosted a national contest in honour of the RASC sesquicentennial called Imagining the Skies. This online contest highlighted astronomical media through photography, sketching, art and crafts.

Serving terms on Victoria Centre’s Council as Treasurer, Vice-president, and President, Lauri has shown great leadership through collaboration with many Centre members. Her past efforts to involve RASC members in public outreach have resulted in many members who continue to support this most important mission to engage the public in science and especially astronomy. Her support of others’ leadership of events speaks to her excellent collaborative approach to public outreach, and using volunteerism as a fun, social activity to get members involved in RASC’s main mission.

Lauri Roche introducing Nathan Gray at the 2014 General Assembly. Photo by Real Roi

As one of the lead members of the Victoria Centre’s School Telescope Program, Lauri has lent her considerable expertise in interacting with students of all ages (kindergarten to high school), and has helped make this program the most sought after by teachers beyond the local area schools.  In the 2017-2018 school year more than 2,000 students took advantage of this program, involving 80 presentations and night sky viewing sessions.

Lauri’s support of astronomy outreach to the public on Observatory Hill through Saturday night events during the summer months at the Centre of the Universe and the historic Plaskett telescope predates her involvement in the Friends of the Dominion Astrophysical Observatory (FDAO). That said, she joined the board of the FDAO very soon after its inception and has been one of its strongest resources for outreach and education ever since, as the FDAO strives to revitalize EPO on Observatory Hill.

Ben Dorman, Lauri Roche & Don Moffatt – Photograph By ADRIAN LAM, TIMES COLONIST

Lauri has almost single-handedly kept FDAO’s fledgling volunteer daytime tours program running, not only by being lead presenter and educator, but also by organizing other volunteers to participate. She has also been a mainstay of regular Saturday Star parties for the public every summer, and unstintingly gives her time on other evenings of the week to give talks on basic astronomy and about Canadian observatories around the world  to all ages and levels of knowledge. Finally, Lauri is a strong advocate on the board for enhancing public outreach offerings and their accessibility to the widest possible public.

Collaborating with and encouraging RASC members to get involved has been the hallmark of Lauri’s approach to public outreach. Lauri’s contagious enthusiasm for astronomy and science, and her active support outside the classroom of young women choosing science careers can’t help but support astronomy being more inclusive. There is no doubt that her outreach in the classroom has helped younger people to consider scientific endeavours as cool and desirable career choices.

Nominators

Reg Dunkley, President, RASC Victoria Centre
Chris Purse, Past President, RASC Victoria Centre
Dr. Chris Gainor, President, RASC National
Sid Sidhu, RASC Victoria Centre
Dr. Ben Dorman, Chair, Friends of the DAO and RASC member
Joe Carr, RASC Victoria Centre

Total Lunar Eclipse – Jan 20, 2019

Posted by as Observing Highlights

RASC Victoria members’ photos of the 2019 Total Lunar Eclipse

On Sunday, January 20th, 2019, we will be able to view a total eclipse of the Moon (weather permitting). The Moon will be in partial phase after rising from the eastern horizon, and move into full eclipse in evening hours as it climbs in altitude and moves to the southeast. The Total Lunar Eclipse will develop over the course of about 3 hours, will be in Totality for about an hour, and will end just before midnight.

This is a perfect opportunity to visually observe this beautiful celestial event, and possibly capture some photographs from a location with an unobstructed view to the east and south.

ECLIPSE TIMELINE
Eclipse beginsMoon’s eastern limb enters the penumbra6:36 pm PST
Partial eclipse begins – 1st ContactMoon’s eastern limb enters the umbra7:33 pm PST
Total eclipse starts – 2nd ContactMoon entirely in the umbra;
deep orange red
8:41 pm PST
Totality9:12 pm PST
Total eclipse ends – 3rd Contact9:43 pm PST
Partial eclipse ends – 4th ContactMoon’s western limb leaves the umbra10:51pm PST
Eclipse endsMoon leaves the penumbra11:48 pm PST
Above Eclipse times are for Pacific Standard Time (PST) for the west coast of North America, and are calculated from UT as presented in the Observers Handbook 2019, pages 127-29.

What’s Happening

A total lunar eclipse occurs when the Earth comes between the Sun and the Moon. During a lunar eclipse the Moon’s position traverses the Earth’s shadow. The Moon’s first contact with the Earth’s shadow is at the outer band of the shadow called the penumbra. The light falling on the Moon is progressively blocked until at the moment of total eclipse the Moon is completely in the darkest central area of the Earth’s shadow called the umbra. At the point of total eclipse the process starts to reverse itself until the Moon is totally out of the Earth’s shadow.


h

Glossary

  • limb – the outer edge of the Moon
  • penumbra – the outer band of the Earth’s shadow
  • umbra – the darker central area of the Earth’s shadow
  • partial eclipse – the Moon is positioned within the penumbra
  • total eclipse – the Moon is positioned totally within the umbra

Observing Tips

What do you need?

Everything from your eyes, binoculars and telescope are suitable. Bear in mind this is a long process and at this time of year dress warmly and bring a chair if you want to be comfortable.

Find yourself a location that has a clear horizon view to the east and south especially if you wish to view during the late stages.

Keep a log of what you see and note the time. Pay attention to how much of the light on the moon is obscured and if there are any colouration changes. During the total eclipse the Moon will take on a deep orange-red colour. The colour of the Moon is a function of contaminants in the atmosphere and varies from year to year.

A good observing project for this long-lasting eclipse will be to observe the craters on the Moon as the eclipse progresses. Craters will be immersed and emerge from the Earth’s shadow on the Moon at times specified in the Observers Handbook 2019, page 129.

Totally eclipsed Moon over the Salish Sea from Cattle Point – Sep 27, 2015

Photographic Tips

Equipment

Any camera with the capability of setting shutter speeds and aperture settings manually will do fine. The ability to use interchangeable lenses will be an advantage for more detailed images of the Moon. For the darker parts of the eclipse, eg. totality you should use a tripod support for best results. If you have access to a telescope you can try capturing the event using prime focus techniques through the telescope optics.

Settings

Today’s digital cameras are very sensitive to light reflected by the Moon. Use ISO 400 to ISO 800 and a long telephoto lens or zoom setting. Smartphones and point-and-shoot digital cameras will not produce rewarding photos of the eclipsed Moon, but can be useful for taking panoramic shots of your surroundings which include the eclipsed Moon.

Technique for smartphone cameras

Smartphone cameras typically do not support manual settings, so using them to capture a lunar eclipse will be less rewarding than using more capable cameras. That said, smartphone cameras can be held up to a telescope eyepiece to capture an image of the Moon. Aligning the tiny lens to the eyepiece can be tricky, however there are platforms made to clamp onto an eyepiece barrel which will hold smartphones steady enough to take acceptable photos of the Moon, including the eclipsed Moon.

Technique for interchangeable lens cameras

The simplest eclipse pictures can be taken with manual settings on your camera and a normal lens, preferably supported by a tripod. For best results use a cable release to minimize vibration. Images taken in this fashion result in a small lunar image. This is why it is preferable to use a telephoto lens to photograph the Moon.

For a full frame camera try a 200mm lens or something close to this, even better a 500mm lens or higher. You may also use teleconverters to increase magnification, these typically come in 1.4x and 2x strengths. Their downside is they reduce the effective aperture of your optical system. A 1.4x teleconverter will decrease your effective exposure by 1 stop, a 2x teleconverter will decrease your effective exposure by 2 stops. Work out your effective aperture of your optical system ahead of time so you don’t have to think about it on the night of the eclipse.

Note for the smaller sub-full frame sensors of some digital cameras you gain an extra advantage as the focal length of the lens is effectively magnified by a factor. For example a Nikon DX body your 200mm lens would be effectively 300mm.

  • APS-C Nikon DX, Pentax : 1.5x
  • APS-C Canon EF-S : 1.6x
  • Four Thirds : 2x

Example:

 Focal Length ApertureEffective Focal Length
with 2x teleconvertor
Effective Aperture
with 2x teleconvertor
 180mm 2.8 360mm 5.6
 480mm 6.8 960mm 13.6

To achieve any higher magnification than what is stated above you will have to use a telescope at prime focus. For this your manual camera does need to have the capability of using interchangeable lenses. For prime focus you will use the telescope optics as your interchangeable lens. To attach your camera to your telescope you will need two things a T-adapter that fits your camera and a telescope camera adapter that fits your telescope.

The telescope camera adapter is designed to fit in the focusing tube of your telescope and is threaded to accept the T-adapter of your camera. With the magnification involved with telescopic optics it is likely that you will need to use a tracking mount. Preferably the mount should be able to track at lunar speed as opposed to sidereal but if the shutter speeds chosen are shorter than 1 or 2 minutes this is not critical.

Exposure times are the next consideration. The following exposure times are based on a medium ISO setting and an effective aperture that would be common with a long telephoto and teleconverter combination. Exposures may vary with your equipment based on ISO speed and effective aperture. The Danjon Lunar Eclipse Luminosity Scale has been included to provide better guesstimates for totality.

Exposure Times: based on ISO 400
Full Moon1/500 second at f/16
1st Contact1/250 second at f/16 see note 1.
2nd Contact1 second at f/16 see note 2.
Totality
*see table below
L = 4 : 4 seconds at f16  L = 3: 15 seconds at f16  L = 2: 1 minute at f16  L = 1: 4 minutes at f16
3rd Contact1 second at f/16 see note 2.
4th Contact1/250 second at f/16 see note 1.
* Danjon Lunar Eclipse Luminosity Scale
 L = 1dark eclipse; lunar surface details distinguishable only with difficultly
 L = 2deep red or rust coloured eclipse; central part of the umbra dark but outer rim relatively bright
 L = 3brick-red eclipse; usually with a brighter (frequently yellow) rim to the umbra
 L = 4very bright copper-red or orange eclipse, with a bluish, very bright umbral rim

Note 1. 1st and 4th contact times given for the partial phases are biased for the light part of the Moon. Remember you are dealing with vastly different exposures between the light and dark parts of the Moon during eclipse. The bias of about 1 stop minus avoids overexposure of the dominant bright area of the Moon.

Note 2. 2nd and 3rd contact times given for the partial phases are biased for the dark part of the Moon. The bias of about 1 stop plus is a good strategy for negative film not quite so good for slides and digital capture given they don’t tolerate overexposure well.

The exposure times are only recommendations. Remember the cardinal rule about photography … bracket. Always try exposures plus and minus your chosen exposure. This gives you a better chance at getting usable results. Let’s all hope for clear weather. If you have any questions please send email to David Lee at davidflee7331@gmail.com.


David Lee – original text
Joe Carr – updated for 2019
Brenda Stuart – illustrations


More information:

Holiday Greetings!

Posted by as News

Christmas 2018 at Astro Cafe
Christmas 2018 at Astro Cafe – photo by Wyman Lee

Please note that Astronomy Cafe will be closed on both Christmas Eve and New Years Eve but will reopen at 7:30 PM on Monday January 7th 2019.

The next Monthly Meeting of the Victoria Centre will occur at 7:30 PM on Wednesday January 9th, 2019 at the University of Victoria.

Happy Holidays to all our members and friends!

RASCals Star Party 2018

Posted by as Events, Special Events

September 7-9, 2018

St. Stephen’s Anglican Church
7921 St Stephens Road – off Mt. Newton Cross Road
Saanichton, BC, Canada

2018 RASCals Star Party poster (719kb PDF)

 

Gates will open at 2pm on Friday. Camp on the field and setup your telescope for two nights of fun!

Cost: Free of charge! Visiting observers who stay overnight: suggested donation of $20/Adult one day or two.

Everyone who is present is entitled to tickets for door prizes, presentations, and access to the observing field.

Prizes for kids and adults, including three telescopes! See below…

Don’t want to camp? No problem if you live in the Greater Victoria area…you can drive home after an evening of fun on the observing field.

Staying after dark? Please bring a red light with you – no white lights!

 

Observing Field at St. Stephens Church
Observing Field at St. Stephens Church

The StarBQ crowd under the tarps!
Click image for slideshow of 2018 RASCals Star Party photos

Schedule of Events

Friday 7th

  • 2:00 pm – Gates open
  • 6:15 pm – Welcome and door prizes, including a telescope!
  • 6:30 pm – Astro Cafe – Theme: Star Parties
    • Bill Weir will share experiences from recent Mt Kobau and Merrit Star Parties.
    • Miles and Dorothy Paul will describe highlights from the latest Oregon Star Party
    • Nelson Walker will discuss his planning process for observing sessions
    • Plus Show and Tell Session
  • 8:00 pm until dawn: observing! No white lights during this time, please

Saturday 8th

  • Solar viewing – all day on the field
  • Afternoon presentation – TBA
  • 5:00 pm – StarBBQ – burgers!
  • 6:15 pm – Welcome and door prizes, including two telescopes!
  • 6:30 pm – Speaker – David Lee will share his experiences, insights and beautiful images acquired on his recent trip to Kitt Peak Observatory in Arizona and during his time amongst the iconic Saguaro cacti.
  • 8:00 pm until dawn: observing! No white lights during this time, please

Sunday 9th

  • Cleanup – everyone please pitch-in & help
  • Please, no parking in the church parking lot this morning in consideration of Church members attending their service!
  • 12:15 pm – solar viewing for St. Stephen’s congregation
  • Early departures please!

Facilities

  • Camping on the observing field with your tent, trailer or motorhome – bare camping, no utilities on the field
  • Setup your telescope and other astronomy gear on the observing field
  • Some power on the field for astronomy equipment, but no RV plug-ins please!
  • Washrooms and porta potties
  • Water, self-serve coffee & tea
  • Visitor and drop-in parking

Please do NOT park on the field with your vehicle if you plan to leave after dark! In this case, move your vehicle off the field after setting up, and park in the parking lot with your headlights facing away from the observing field. The same parking request applies to visitors dropping in for the evening – leave your vehicle in the parking lot and walk into the observing field.


Star Party t-shirts

A very limited supply of RASCals Star Party t-shirts will be available for sale. Pre-order yours by contacting Joe Carr. Black t-shirts available in Men’s M or L sizes ($16 ea), white t-shirts available in Men’s S & XL ($12 ea), and white Kid’s t-shirts available in S & M ($12 ea).


Prizes

  • Bushnell 4.5″ reflector telescope – Friday night prize – donated by a RASC member
  • Sky-Watcher Virtuoso P114 4.5″ Matsukov telescope & computerized mount – Adult’s Grand Prize – Saturday night – donated by Quarky Science
  • Celestron Astromaster 130AZ 5” reflector telescope – Kid’s Grand Prize – Saturday night – donated by All-Star Telescope

 

 


Location

What to observe

Night sky on Sep 7, 2018 at 9:30PM
Night sky on Sep 7, 2018 at 9:30PM

FOR SALE – Meade 14″ SCT and accessories

Posted by as Buy&Sell

RASC Victoria Centre is selling surplus astronomical equipment

Meade 14″ SCT telescope, cradle mount & Hyperstar f/2

PLEASE NOTE – ALL ITEMS ARE NOW SOLD!

Photo gallery of Victoria Centre’s Observatory

 

  • Please refer to the asking prices of the items listed below. Items will be sold to the bidder who submits the highest bid price.
  • Once a bid is accepted, prompt payment by bank draft or certified cheque is preferred, payable to: RASC Victoria Centre. Payment by personal cheque drawn on a US or Canadian bank is also acceptable, but will cause delays.
  • Tie bids will be decided by the date and time the bids are first received.
  • Local pickup of items is preferred, otherwise successful bidders are responsible for shipping costs in addition to their bid price.
  • The equipment listed below has been used together for the last 10 years at Victoria Centre’s observatory. Items can be bought separately or together.
  • All equipment is sold as-is without any warranty or guarantee of fitness for purpose.

Please contact Bruno Quenneville if you need further details about the items offered for sale Email (brunoqvictoria@gmail.com) or call ‭(250) 888-3450‬.

Send your bids to Joe Carr

  • Email (web@victoria.rasc.ca)
  • Postal mail or courier: Attn: RASC Victoria Centre, 3046 Jackson St, Victoria, BC Canada V8T 3Z8.

Meade 14” f/10 SCT telescope optical tube – SOLD

  • Optical tube only – no diagonals or mounting hardware is included
  • Includes
    • Meade standard finder scope
    • Feather Touch ultra fine thread focuser upgrade – see red arrowed item in photo below
    • Dew shield
  • Other accessories available – see below for Hyperstar and cradle mount (both used with this 14″ SCT)
  • Meade’s website
  • $1,350 asking price
  • Condition: Used showing minor wear, but in good operating condition with no marks. Optics need cleaning.

Meade 14" SCT, Feather Touch focuser upgrade (included), WO 2" digital focuser (not included), Meade finder scope (included)
Meade 14″ SCT, Feather Touch focuser upgrade (included), WO 2″ digital focuser (not included), Meade finder scope (included)

Hyperstar f/2 focal reducer for Meade or Celestron SCT telescopes – SOLD

  • Reduces optics from f/10 to f/2 for imaging only (not for visual use)
  • Starizona website – verify with Starizona this reducer will work with your telescope!
  • $450 asking price
  • Condition: Used showing minor wear, but in good operating condition with no marks.

Cradle mount for 14″ optical tube telescopes – SOLD

  • This heavy duty metal cradle provides excellent support for a 14″ optical tube such as the above Meade 14″ SCT
  • Includes
    • Losmandy style rails suitable for attaching the cradle to a heavy duty tracking mount
    • Two (2) Losmandy style rails  on both sides for mounting additional telescopes or other gear
  • $650 asking price
  • Condition: Used showing minor wear, but in good operating condition with no marks.

 

FOR SALE: Observatory Equipment

Posted by as Buy&Sell

RASC Victoria Centre is selling surplus astronomical equipment

FOR SALE BY BID: telescopes, equipment & optics

Due date: April 30, 2018 at 11:59PM

BIDDING NOW CLOSED

Photo gallery of Victoria Centre’s Observatory

 

  • Each lot itemized below will be sold to the bidder who submits the highest bid price by the due date, providing our minimum bid (reserve) price is met or exceeded.
  • Once a bid is accepted, prompt payment by bank draft or certified cheque is preferred, payable to: RASC Victoria Centre. Payment by personal cheque drawn on a US or Canadian bank is also acceptable, but will cause delays.
  • Tie bids will be decided by the date and time the bids are first received.
  • Local pickup of items is preferred, otherwise successful bidders are responsible for shipping costs in addition to their bid price.
  • All equipment is sold as-is without any warranty or guarantee of fitness for purpose.

Please contact Bruno Quenneville if you need further details about the items offered for sale Email or call ‭(250) 888-3450‬.

Send your bids to Joe Carr

  • Email (web@victoria.rasc.ca)
  • Postal mail or courier: Attn: RASC Victoria Centre, 3046 Jackson St, Victoria, BC Canada V8T 3Z8. Bids sent by postal mail or courier must be postmarked April 27, 2018 or earlier. 

Orion 80mm telescope
Orion 80mm telescope

LOT 1 – Orion ED80 80mm f/7.5 apochromatic refractor telescope – SALE PENDING

  • Includes:
    • William Optics 2″Dielectric diagonal & 1 1/4″ adaptor.- William Optics website
    • William Optics 2-speed Crayford focuser
    • Orion right angle finder scope & mounting bracket
    • Orion mounting rings
    • Orion custom ED80 Hard case
  • No other hardware included
  • Orion’s website
  • $300 reserve
  • Condition: Used showing minor wear, but in good operating condition with no marks

Tele Vue NP127is telescope
Tele Vue NP127is telescope

LOT 2 – Tele Vue NP127is apochromatic imaging refractor telescope – SALE PENDING

  • Includes (all Tele Vue brand unless otherwise indicated)
    • 2.4 inch diameter Focus Mate dual-speed rack and pinion focuser
    • Sliding dew shield
    • 2 inch accessory adapter with clamp ring
    • photo accessory adapter
    • custom fitted hard shell case
    • Focus Mate Driver FDF-2004
    • 90 Degree Everbrite Diagonal (2 inch diameter)
    • 10 micron position indicator for the 2.4 inch focuser
    • 0.8X Focal Reducer NPR -1073
    • Three 1 Inch Spacers for 2.4 inch focuser
    • One 0.5 inch spacer for 2.4 inch focuser
    • One 0.375 inch spacer for 2.4 inch focuser
    • One 0.25 inch spacer for 2.4 inch focuser
    • SBIG STL Camera Adapter STL-1071
    • Large Field Coma Corrector LCL – 1069
    • Canon T-Ring for EOS dSLR
  • Tele Vue’s website
  • $4,500 reserve
  • Condition: Used showing minor wear, but in good operating condition with no marks.
    • The Focuser is bent, but operating. Replacement cost would be US$350.
    • The optics deliver close to perfect star images visually and for photos taken by APS-C and smaller sensors, however when using a full-frame 35mm sensor, some star elongations are apparent in the corners of the photographic frame. Please view this evaluation done by our members for further details. Tele Vue is able to restore the telescope optics to factory specification for a charge of US$495 plus shipping, however this work would be done at a prospective purchaser’s own expense.

 

LOT 3 – Meade 14” f/10 SCT telescope optical tube

  • Optical tube only – no diagonals or mounting hardware is included
  • Includes
    • Meade standard finder scope
    • Feather Touch ultra fine thread focuser upgrade – see red arrowed item in photo below
    • Dew shield
  • Other accessories available – see below for Hyperstar and cradle mount (both used with this 14″ SCT)
  • Meade’s website
  • $1,500 reserve
  • Condition: Used showing minor wear, but in good operating condition with no marks. Optics need cleaning.

Meade 14" SCT, Feather Touch focuser upgrade (included), WO 2" digital focuser (not included), Meade finder scope (included)
Meade 14″ SCT, Feather Touch focuser upgrade (included), WO 2″ digital focuser (not included), Meade finder scope (included)

LOT 4 – Hyperstar f/2 focal reducer for Meade or Celestron SCT telescopes

  • Reduces optics from f/10 to f/2 for imaging only (not for visual use)
  • Starizona website – verify with Starizona this reducer will work with your telescope!
  • $500 reserve
  • Condition: Used showing minor wear, but in good operating condition with no marks.

LOT 5 – Cradle mount for 14″ optical tube telescopes

  • This heavy duty metal cradle provides excellent support for a 14″ optical tube such as the above Meade 14″ SCT
  • Includes
    • Losmandy style rails suitable for attaching the cradle to a heavy duty tracking mount
    • Two (2) Losmandy style rails  on both sides for mounting additional telescopes or other gear
  • $700 reserve
  • Condition: Used showing minor wear, but in good operating condition with no marks.

 

Total Lunar Eclipse – Jan 31, 2018

Posted by as Observing Highlights

Total Lunar Eclipse on Sep 27, 2015 from Victoria
Total Lunar Eclipse on Sep 27, 2015 from Victoria – photo by Joe Carr

On Wednesday, January 31st, weather willing, we will be able to view a total eclipse of the Moon. The Moon will move into full eclipse in the early hours of the morning and will be in partial phase in the western sky as the Sun rises. The Total Lunar Eclipse will develop over the course of about 3 hours. It’s a perfect opportunity to capture some snapshots of the event. Read further to find out what happens during the eclipse and how to capture it photographically.

 

 E C L I P S E   T I M E L I N E
Moon below the horizon Moon’s eastern limb enters the penumbra 2:51 am PST
Partial eclipse begins – 1st Contact Moon’s eastern limb enters the umbra 3:48 am PST
Total eclipse starts – 2nd Contact Moon entirely in the umbra;
deep orange red
4:52 am PST
Totality 5:30 am PST
Total eclipse ends – 3rd Contact 6:08 am PST
Partial eclipse ends – 4th Contact Moon’s western limb leaves the umbra 7:11 am PST
Sunrise 7:48 am PST – approximate
Eclipse ends Moon leaves the penumbra 8:09 am PST

 

What’s Happening

A total lunar eclipse occurs when the Earth comes between the Sun and the Moon. During a lunar eclipse the Moon’s position traverses the Earth’s shadow. The Moon’s first contact with the Earth’s shadow is at the outer band of the shadow called the penumbra. The light falling on the Moon is progressively blocked until at the moment of total eclipse the Moon is completely in the darkest central area of the Earth’s shadow called the umbra. At the point of total eclipse the process starts to reverse itself until the Moon is totally out of the Earth’s shadow.


Glossary

  • limb – the outer edge of the Moon
  • penumbra – the outer band of the Earth’s shadow
  • umbra – the darker central area of the Earth’s shadow
  • partial eclipse – the Moon is positioned within the penumbra
  • total eclipse – the Moon is positioned totally within the umbra
Above Eclipse times are for Pacific Standard Time (PST) for the west coast of North America, and are calculated from UT as presented in the Observers Handbook 2018, pages 126-27.

Observing Tips

What do you need?

Everything from your eyes, binoculars and telescope are suitable. Bear in mind this is a long process and at this time of year dress warmly and bring a chair if you want to be comfortable.

Find yourself a location that has a clear horizon view of the west especially if you wish to view during the late stages.

Keep a log of what you see and note the time. Pay attention to how much of the light on the moon is obscured and if there are any colouration changes. During the total eclipse the Moon will take on a deep orange-red colour. The colour of the Moon is a function of contaminants in the atmosphere and varies from year to year.


Photographic Tips

Equipment
Any camera with the capability of setting shutter speeds and aperture settings manually will do fine. The ability to use interchangeable lenses will be an advantage for more detailed images of the Moon. For the darker parts of the eclipse, eg. totality you should use a tripod support for best results. If you have access to a telescope you can try capturing the event using prime focus techniques through the telescope optics.

Settings
Today’s digital cameras are very sensitive to light reflected by the Moon. Use ISO 400 to ISO 800 and a long telephoto lens or zoom setting. Smartphones and point-and-shoot digital cameras will not produce rewarding photos of the eclipsed Moon, but can be useful for taking panoramic shots of your surroundings which include the eclipsed Moon.

Technique
The simplest eclipse pictures can be taken with manual settings on your camera and a normal lens, preferably supported by a tripod. For best results use a cable release to minimize vibration. Images taken in this fashion result in a small lunar image. This is why it is preferable to use a telephoto lens to photograph the Moon. For a 35mm camera try a 200mm lens or something close to this, even better a 500mm lens or higher. You may also use teleconvertors to increase magnification, these typically come in 1.4x and 2x strengths. Their downside is they reduce the effective aperture of your optical system. A 1.4x teleconvertor will decrease your effective exposure by 1 stop, a 2x teleconvertor will decrease your effective exposure by 2 stops. Work out your effective aperture of your optical system ahead of time so you don’t have to think about it on the night of the eclipse.

Example:

 

 Focal Length  Aperture Effective Focal Length
with 2x teleconvertor
Effective Aperture
with 2x teleconvertor
 180mm  2.8  360mm  5.6
 480mm  6.8  960mm  13.6

 

To achieve any higher magnification than what is stated above you will have to use a telescope at prime focus. For this your manual camera does need to have the capability of using interchangeable lenses. For prime focus you will use the telescope optics as your interchangeable lens. To attach your camera to your telescope you will need two things a T-adapter that fits your camera and a telescope camera adapter that fits your telescope. The telescope camera adapter is designed to fit in the focusing tube of your telescope and is threaded to accept the T-adapter of your camera. With the magnification involved with telescopic optics it is likely that you will need to use a tracking mount. Preferably the mount should be able to track at lunar speed as opposed to sidereal but if the shutter speeds chosen are shorter than 1 or 2 minutes this is not critical.

Exposure times are the next consideration. The following exposure times are based on a medium speed film and an effective aperture that would be common with a long telephoto and teleconverter combination. Exposures may vary with your equipment based on ISO speed of film used and effective aperture. The Danjon Lunar Eclipse Luminosity Scale has been included to provide better guesstimates for totality.

 

Exposure Times: based on ISO 400
Full Moon  1/250 second at f/16
1st Contact 1/125 second at f/16 see note 1.
2nd Contact 2 seconds at f/16 see note 2.
Totality
*see table below
L = 4 : 8 seconds at f16
L = 3: 30 seconds at f16
L = 2: 2 minutes at f16
L = 1: 8 minutes at f16
3rd Contact 2 seconds at f/16 see note 2.
4th Contact 1/125 second at f/16 see note 1.
* Danjon Lunar Eclipse Luminosity Scale
 L = 1 dark eclipse; lunar surface details distinguishable only with difficultly
 L = 2 deep red or rust coloured eclipse; central part of the umbra dark but outer rim relatively bright
 L = 3 brick-red eclipse; usually with a brighter (frequently yellow) rim to the umbra
 L = 4 very bright copper-red or orange eclipse, with a bluish, very bright umbral rim

 

Note 1. 1st and 4th contact times given for the partial phases are biased for the light part of the Moon. Remember you are dealing with vastly different exposures between the light and dark parts of the Moon during eclipse. The bias of about 1 stop minus avoids overexposure of the dominant bright area of the Moon.

Note 2. 2nd and 3rd contact times given for the partial phases are biased for the dark part of the Moon. The bias of about 1 stop plus is a good strategy for negative film not quite so good for slides and digital capture given they don’t tolerate overexposure well.

The exposure times are only recommendations. Remember the cardinal rule about photography … bracket. Always try exposures plus and minus your chosen exposure. This gives you a better chance at getting usable results. Let’s all hope for clear weather. If you have any questions please send email to David Lee at davidflee7331@gmail.com.


David Lee – original image and text
Joe Carr – updated for 2018
Brenda Stuart – illustrations

RASC National Star Party from Victoria

Posted by as Events

RASC Victoria members used the Bob Wright Centre at the University of Victoria for a nation-wide celebration of RASC astronomy in Canada for the last 150 years, from 3-5pm on Saturday, January 27th. We will were joined by astronomy teachers and students from University of Victoria, Camosun College, and Victoria High School. Tours of the 32″ telescope and observing the Sun through solar telescopes was happening outside. Members participated in a series of Youtube “webisodes” from RASC Centres across Canada.

Photo gallery

Lunar “X” during 2018

Posted by as Observing Highlights

Lunar X feature - photo by Michel Michaud
Lunar X feature – photo by Michel Michaud

by Michel Michaud, RASC Victoria Centre Observing Co-chair & Librarian

The Lunar X is a claire-obscure effect in which light and shadow creates the appearance of a letter “X” on the rim of the Blanchinus, La Caille and Purbach craters. The X is visible only for a few hours before the first quarter slightly below the lunar terminator. Near the X, the lunar V is also visible, formed by Ukert crater and several other small craters.

If you never had the chance to view the Lunar X, also known as the Werner X, there are several time this year that feature could be visible from Victoria. The time predict the beginning of the event and all in LOCAL TIME.

  • 23 January 2018, 2042 (8:42 pm) – Tuesday evening event
  • 23 March 2018, 2357 (11:57 pm) – Friday evening event
  • 21 May 2018, 0002 (12:02 am) – Monday evening event
  • 19 July 2018, 2314 (11:14 pm) – Thursday evening event
  • 16 September 2018, 2332 (11:32 pm) – Sunday evening event
  • 14 November 2018, 0059 (12:59 am) – Wednesday evening event

Werner “X” observation – 2014