President’s Message – September 2017

Posted by as President's Message

The summer of 2017 will be noted for a relatively rare event, a solar eclipse visible across North America. Many Victoria Centre members travelled to see totality including me. That was my first total eclipse and it was an extraordinary experience. I now understand why many members of the club make it a priority to view total solar eclipses. The totality was all too short but even that 2 minute experience made the trip worthwhile.

I viewed the eclipse at the home of friends in western Idaho; in all, 22 of us set up to watch the eclipse. We put chairs in front of their garage as that faces east and got ready for the eclipse to begin. With the garage door open, we had a shaded space where we could get out of the sun’s heat as needed. As the eclipse progressed, we noticed that we did not need that shade as the sun’s rays no longer felt hot. That happened some time before the amount of light was reduced so it was an interesting sensation.

We looked around for objects projecting the sun and it was great to see the effect of the spaces between leaves as the sun became an increasingly narrow crescent. We had my solar telescopes set up to provide a view of the sunspots and prominences. I noticed that the progress of the eclipse was more evident with the magnification of the telescope than though eclipse glasses. We also put out a white sheet to see if we could see the shadow bands. We did see them at both ends of totality.

Totality was amazing. Having that all too brief diamond ring and then the sudden appearance of the sun’s corona was magical. I had a good look to see if I could see some of the stars but I only saw Venus. As the seconds ticket by, we knew it would soon be over, but did our best to enjoy the spectacle. Sure enough, another diamond ring appeared and the light started coming back. It was a letdown that it was over but the experience is not to be forgotten.

Now we are back into the “regular” time of the year monthly meetings resume on Wednesday, September 13  at 7:30 p.m. in room A104 in the Bob Wright Centre at UVic. Astro Café resumes at 7:30 p.m. on Monday, September 11 in a temporary location while our regular room is renovated. We will be posting the schedule of other events as they are completed. As a reminder, the November meeting is our AGM. That will be held on the evening of Saturday, November 18 at the Cedar Hill Golf Course. Please keep an eye on the website for details about upcoming events.

President’s Message – June 2017

Posted by as President's Message

Another year of Astro Café has concluded. I would like to thank Barb, Reg, and John for the great series of topics, photos, videos, and of course, snacks we shared. With the installation of the larger television screen earlier this year, it is much improved for the sharing of astrophotography, videos, and the like. Astro Café continues to be a well-attended centre event and we look forward to another year starting in September. If you have not been to Astro Café recently, or ever, I encourage you to come by one Monday evening. I don’t think you will be disappointed!

The 2017 Summer Star Parties at the DAO are in full swing and we have had some good observing weather. As we enter summer, the emphasis will be on solar astronomy and targets that can be seen while the sky remains light. If you are not already on the volunteer’s list, and want to help out, please send me an email at president@victoria.rasc.ca. There are many more Saturdays on the calendar and new volunteers are most welcome.

As space exploration is in the news frequently, we have some great conversations at the star parties. I really enjoy sharing that time at the telescope that is often someone’s first time seeing a solar prominence or looking at the moon through a telescope. We’ve even had astronomical events that centre members have not seen before. For example, on 3 June, we saw the double shadow transit of Jupiter’s moons Ganymede and Io during the evening. That was a first for me and something I will look out for in the future. The shadow transit coincided with the Great Red Spot being visible so that was great all around!

With general interest in astronomy, I have long thought it is under represented in the school curriculum. Considering the major contributions of Canadian astronomers, it is surprising that our students do not have more exposure to space science and, in particular, the opportunity to take a senior level course in astronomy. I was very happy to learn that teachers at Victoria High School are working to correct that with the introduction of an Astronomy 11 course. The course launches in the 2017 – 18 school year and the initial impressions are that quite a few students are interested in taking this new course. That is a great step forward and I hope it proves to be a great success. As part of the launch of this new course, Victoria High School is hosting a Star Party on Saturday 17 June starting at 8:30 p.m. If you are in the area why not attend? Please see cuyeda.weebly.com/star-party.html for more information.

Finally, as a reminder, our RASCals Star Party will be held on weekend of 28 – 30 July on the District of Metchosin municipal grounds. Information will be posted on our website once we have more details about the events that day. Saturday 29 July has been identified as the National Star Party day with events taking place across Canada as part of the sesquicentennial. I hope many members will come to the party again this year.

FOR SALE: Atlas of Selected Regions of the Milky Way – Barnard, 1927

Posted by as Buy&Sell

RASC Victoria Centre is selling a rare antiquarian star atlas from our library:

Atlas of Selected Regions of the Milky Way – by Edward Emerson Barnard

Published by Carnegie Institution of Washington 1927
Part I – Photographs and Descriptions
Part II – Charts and Tables

This is a beautifully illustrated atlas of the Milky Way
featuring photographs hand-picked by Barnard

$10,000

 

Payment by bank draft or certified cheque payable to: RASC Victoria Centre.
Payment by personal cheque drawn on a US or Canadian bank is acceptable, but will cause delays.

Please contact our Librarian Michel Michaud (Email or call (250) 477-1414 if you are interested in purchasing this antiquarian two volume set.

 

Part I Photographs and Descriptions

Total Solar Eclipse – August 21, 2017

Posted by as Observing Highlights

2012 Total Solar Eclipse aboard the Paul Gauguin cruise ship, on the totality track south of New Caledonia Nov 14, 2012 200km south of New Caledonia in the Coral Sea
2012 Total Solar Eclipse

A Total Solar Eclipse is a rare astronomical event, and it is even rarer for one to occur close to where you live. Those of us who live in the Pacific Northwest of North America will be favoured with such an event happening near us on August 21, 2017. In fact, everyone in North America is within striking distance of being able to observe this amazing event, where the Moon slides in front of the Sun for a few brief minutes, suddenly and totally obscuring the Sun.

If you haven’t observed a Total Solar Eclipse, this is your chance!

Location

The eclipse tracks across Oregon and Idaho, making it easy to get to the eclipse totality track from Victoria, British Columbia with one day’s drive. The major cities of Portland and Eugene in Oregon are obvious targets for those of us who are eclipse chasers. I-5, an Interstate highway, crosses the eclipse centreline at the city of Salem, Oregon as the eclipse tracks eastward across the U.S.A. So you might decide to stay in Portland or Eugene, but you will have to drive to the centreline, otherwise you will miss the eclipse!

NASA’s Eclipse website gives all the facts and figures required to find and enjoy the eclipse, including an interactive zoomable map showing the eclipse track.

Total Solar Eclipse 2017 track across Oregon and Idaho
Total Solar Eclipse 2017 track across Oregon and Idaho

At the intersection of I-5 and the eclipse path near Salem, Oregon, these are the characteristics of the eclipse:

Lat.: 44.803° N
Long.: 123.0318° W

Duration of Totality: 2 minutes 0 seconds

  • Start of partial eclipse (C1) : 09:05:18AM  Altitude=27.8° Azimuth=101.2°
  • Start of total eclipse (C2) : 10:17:13.0AM  Altitude=39.8°  Azimuth=116.8°
  • Maximum eclipse : 10:18:13AM  Altitude=40.0° Azimuth=117.0°
  • End of total eclipse (C3) : 10:19:13AM  Altitude=40.1° Azimuth=117.3°
  • End of partial eclipse (C4) : 11:37:50AM  Altitude=51.0° Azimuth=140.1°

Why this location? Well, if you look at the weather predictions and the track maps, you will see this location is easiest to get to from Victoria, and offers a decent chance of clear skies. Simply take a ferry to the mainland, and drive down I-5 to Oregon. This location is away from the coastal clouds, even though there is better weather available if you drive eastward through Oregon and possibly into southern Idaho. You can also seek out more scenic locales such as Wyoming, however now you will be traveling much further.

What if you can’t travel to the track of totality?

You can still see a partial solar eclipse from anywhere in North America. Use NASA’s Interactive Eclipse Map to get the calculated timing for the eclipse in the area you plan to observe from. Click and zoom to your area, then click on your observing spot to see a popup telling you how long the eclipse will last and what you will see.

Eclipse observing events in Victoria, BC, Canada – 90% coverage in Victoria

Weather map for the Total Solar Eclipse 2017 in Oregon
Weather map for the Total Solar Eclipse 2017 in Oregon

Weather

Weather always plays a big part in any solar eclipse, so being mobile is key to improving the odds of actually seeing the event should clouds threaten to obscure the Sun at the critical moment. Our very own Jay Anderson (former RASC Journal editor) is a weather expert, and specializes in forecasting weather for solar eclipses. His Eclipse website offers sage advice backed up with maps and charts depicting weather prospects for each eclipse happening in the world for the next several years. Read Jay’s analysis of the area you propose to observe from, so you understand how the weather might behave on eclipse day. Topography, elevation changes and local factors play into how the weather evolves throughout the day for a particular locale. Become a local weather expert, and you increase your chances for success!

Observing

Observing a Total Solar Eclipse is pretty easy, however that said, if you haven’t done it before, it’s nice to have experienced eclipse observers around to guide you through the process. Obviously the time of total eclipse is the main event, however other things happen beforehand, afterwards, and during an eclipse that are worthwhile.

You should try out any gear you propose to take with you before you leave. Make sure you have proper solar eclipse filters for any binoculars, camera lenses and telescopes you are bringing along. Take test photos of the Sun weeks before you leave, so you know your photo gear will work as expected. Always have a backup plan for when (not if) gear breaks, or you simply can’t get it to work properly. Remember, you only have a couple of minutes to see this event!

Finally, relax and enjoy the day. Arrive early. Try to manage your stress level. Just sit back in a reclining chair, have your solar glasses handy, and enjoy!

Safely observing a solar eclipse – read about how to safely observe a solar eclipse

DIY Box Pinhole Projector – to safely observe the eclipse with only a box and some aluminum foil!

Help!

If this will be your first time observing a total solar eclipse, no doubt you have many questions and concerns, and don’t know where to start. The resources presented here may be overwhelming. Please ask any questions you might have about eclipses at Astronomy Cafe, held each Monday evening. Your fellow RASC members have observed solar eclipses before…they can help!

Perhaps you prefer to leave it to someone else to organize for you, and take a tour. Tour organizers will ensure you are on the centreline for the event, will do their very best to seek clear skies (no guarantees though!), and will supply you with eclipse glasses and ensure you are as comfortable as possible throughout the event. Some suggestions:

  • RASC Eclipse 2017 – a scenic holiday to the midwest USA, a solar eclipse, and sponsored by RASC!
  • Sky & Telescope – overland to Nashville, seeing rockets and observatories along the way…and the eclipse
  • Travelquest – a tour company specializing in eclipses who are offering five different experiences for the 2017 eclipse

Resources

  • NASA’s Eclipse – a great starting point for information gathering and predictions
  • Eclipsophile – Jay Anderson’s weather predictions are a must to select a location that will likely have clear weather
  • Great American Eclipse – comprehensive information about this specific eclipse – where to go and what you will see
  • Eclipse 2017 – lots of home-grown advice about where to be and what to do
  • America’s 2017 Solar Eclipse – Sky & Telescope’s online resources for planning your eclipse adventure
  • MrEclipse – Fred Espenak’s guide to successfully experiencing and photographing an eclipse
  • Mr. Eclipse says west may be best… – Fred’s eclipse predictions to the Seattle Astronomical Society
  • Kendrick Astro – a Canadian astronomy dealer who sells solar filters for visual and photographic use