Meteor Shower Expert is Guest Speaker at the Astro Cafe on Monday December 7th.
The Geminids are usually the strongest meteor shower and this year they peak around the 13th of December which is a new moon. So if skies cooperate, conditions could be ideal for savouring this shower. In anticipation this event we have arranged for Abedin Abedin, a postdoctoral fellow at NRC Herzberg to share his research on meteoroid streams, the swarm of particles left in the wake of comets and near earth asteroids that cause meteor showers.
Title: “The age and parent body of the Quadrantids meteoroid stream”
Abstract: The Earth intersects the orbit of Quadrantids meteoroid stream every year around January 3-4, giving raise to the Quadrantid meteor shower. The Quadrantids are among the strongest meteor showers with Zenithal Hourly Rate ZHR~110-130. The Quadrantids are unique among other meteor showers: It has very short duration of just a few days with even narrower core activity which has a Full Width of Half Maximum (FWHM)~0.6 days – a strong proxy of a very young meteor shower. Secondly, the meteoroid stream has been linked to the Near-Earth Object 2003 EH1, – a body of asteroidal appearance. Meteoroid streams are generally associated with comets and to a lesser degree with asteroids, which raises an interesting question if 2003 EH1 is the nucleus of a dormant or recently extinct comet. Here, I will present on how we trace a meteoroid stream to a proposed parent body and how we determine the age of Quadrantids, which appears to be as young as 200 years. Furthermore, the Quadrantids have also been linked to comet 96P/Machholz, which gives rise to 7 additional meteor showers. I will also discuss the relationship between the Quadrantids, 2003 EH1 and comet 96P.
Biography: Abedin Abedin writes: I obtained my master’s degree in 2006 from the University of Sofia, Bulgaria. I then worked at the Bulgarian Academy of Sciences for three years. In 2011 I started my PhD degree at the University of Western Ontario, London ON. I worked on determining the age of eight meteoroid streams, associated with comet 96P/Machholz. I completed my degree in September 2016. Since Aug. 2018, I’ve been a postdoctoral fellow at Herzberg Astronomy and Astrophysics at NRC, working on collisional probabilities and dust production rates in the trans-Neptunian Region.
Tales of the littlest galaxies that could … at UVic Observatory Open House Wednesday December 2nd
You are invited to a Zoom presentation at the UVic Observatory Open House at 7:30PM on Wednesday December 2nd. Dr. Matt Taylor a post doc at Herzberg Institute of Astronomy and Astrophysics will discuss the important role that Dwarf Galaxies play. Entitled “Judge Me By My Size, Do You? Tales of the littlest galaxies that could.” this sounds like it will be entertaining as well as informative. Join the Zoom Meeting
Nominate Alex Schmid for upcoming Victoria Council by-election – email
UVic Astronomy Open House Wednesday October 28th: Deep (Machine) Learning with Neural Networks by Karun Thanjavur (UVic)
You are invited this Zoom Meeting at 7:30 PM PDT this Wednesday by following this link.
Learn about the second industrial revolution as Karun Thanjavur demonstrates the amazing power of artificial intelligence. The future is here today!
Abstract: Artificial intelligence (AI), specially Deep (Machine) Learning applications are already ubiquitous in everyday use, and have been called the second industrial revolution. Deep Learning algorithms, called Neural Networks, thrive on Big Data, the happy ‘problem’ we now face of enormous amounts of data available in astronomy and in almost all fields of human endeavour. Piggybacked on the impressive recent advances in high performance computing, neural networks are trained on these available large datasets to then perform a variety of human-like tasks, such as realtime decision making, identifying subtle patterns in the data, forecasting, making recommendations based on experience, and so on. In this presentation I aim to provide an overview of this rapidly burgeoning field, explain in simple terms the construction and working of a neural net, and illustrate these principles with a few examples drawn from literature and from my own research.
How to Talk to a Science Denier:
Jim Hesser attended a recent UVic Physics colloquium by Dr. Lee McIntyre (Boston U.) was on the topic, “How to Talk to a Science Denier: What I learned at the Flat Earth Convention”.
Jim reports that the key take away message was that the best way he’s found to help a science denier is through real conversation that leads to building a relationship of trust between the denier and the scientists; once there is trust, the stage is set for the denier to look at alternate views and evidence the scientist provides. People interested in the science denial challenge might enjoy exploring this presentation.
David Lee’s First Light With Borg 55FL and ASI183MC
David writes: For those who can’t wait for the winter objects and you’re willing to stay up late you can catch objects like the Orion Nebula. This was also first imaging light for the Borg 55FL and the ASI183MC.
Imaging Camera: ZWO ASI183MC
Imaging Optics: Borg 55FL f/3.6 Astrograph
Filtration: Hutech Night Glow IDAS NGS1
Tracking Mount: Astrotrac
Exposure: 50 light frames of 30 seconds for a total exposure of 25 minutes
Processing: Pixinsight Core Version 1.8 and Adobe Photoshop CC 2021
Bill writes: Using Stellarium as a guide, with my 15X70 binoculars it was an easy long star hop from Arcturus to the precise area where I should be able to see the comet. Due to the 1/4 Moon being maybe only 25° away and even though I had the Moon blocked by a tree the comet was invisible through binoculars so on to the f/3.3 508 mm Dobsonian scope. Bill’s persistence allowed him to glimpse and sketch comet C/2020 f3 Neowise.
What’s happening at The RASC?
Not all members of the Victoria Centre have been receiving this valuable email which provides information on weekly RASC online offerings such as the Explore the Universe and some regional Zoom presentations. To subscribe to this interesting message click here.
Impressive Images of Mars from Edmonton RASCal Abdur Anwar
Abdur Anwar dusted off his old Celestron 8 inch Schmidt Cassegrain Telescope and put it to good use using a lucky imaging technique to capture some amazing images of Mars. On August 25th Abdur experimented with the program WinJupos which can remove the blurring effect caused by rotation. Check out the before and after images below.
Mars on August 25th Image uncorrected for rotationSame image as above with “derotation” corrections from WinJupos appliedAbdur’s derotated image of Mars taken on August 28th using Celestron C8 with 2X barlow and an ASI600MM camera with zwo RGB filters and a CG5 mount using 1/60s exposure time and a gain of 175. Images were stacked in Autostakkert, wavelets applied in Registax, and derotated in Winjupos.
Speaking of Mars check out this 4K video
The video in this link displays a collection of high resolution images taken on a number of Martian space missions. It is 12 minutes well spent.
Hawaiian Nights: A Personal Journey from Vancouver Island to Maunakea, with Cam Wipper
Don’t miss this interesting Zoom presentation at 4:00 PM PDT on Friday August 28th. Growing up in Nanaimo, Cam never imagined he would spend nearly a decade living in Hawai’i and working on Maunakea, the best place on Earth for astronomical observations.
In his talk, Cam will tell the story of how he found himself on Maunakea, from his days as a student at Vancouver Island University, to his first night up on the summit of Maunakea, nearly 14.000 feet (4200m) above sea level. This will include a brief history of astronomy in Hawaii, as well as an exploration of how a modern astronomical observatory conducts scientific observations. All will be told from the perspective of a telescope operator and scientific observer; a position Cam has held at the Canada-France-Hawaii Telescope since 2015. Click here to register.
Lagoon & Trifid Nebulae – Dan Posey
30.5 minutes (61x30s) of exposures captured from Metchosin. Each frame was captured at f 1.4 using a Sigma 105mm lens, and a Canon Ra at iso 640 off of an unguided iOptron Skyguider Pro – Messier 8 & 20 RGB – Dan Posey
Moon shadows on Jupiter – John McDonald
Three of 20 images of the shadows cast by Io and Ganymede on Jupiter during a double shadow event, one near the start, one in the middle and one at the end. Io can just be made out on the upper two images as a white spot between Ganymede’s shadow and Jupiter’s red spot. In the lower image Io has just left the planet’s disk and shows up clearly. Details Date 08-04-2020. 8″ Edge SCT on AVX mount. ZWO ASI120MM-S camera with filter wheel and TV Powermate barlow to give focal ration f/25. Captured 1000 frames in each of R,G and B filters for each color. The best 30% for each filter were stacked in Astrostakkert. Sharpened in Registax. Winjupos was used to derotate the R,G and B frames before combining to make RGB color images. Post processing in ACR and Photoshop. Time lapse movie
A Poetic Pelican by Doug MacDonald
A wonderful bird is the Pelican. His beak can hold more than his belly can. He can hold in his beak enough food for a week! I’ll be darned if I know how the hellican.
Shot this Aug. 9 – 13 with Bortle 6 skies. This bird lives in Cygnus, not too far from Deneb. I processed it in the SHO palette; it represents just over 8 hours of narrowband exposure with a 5″ refractor at f/5.5.
Final UVic Open House of the Summer is a Block Buster!
What happens when the largest objects in the Universe go face-to-face? Be sure to join UVic Phd Candidate Mallory Throp for this fascinating Zoom presentation that begins at 7:30PM on Wednesday August 26th. The zoom guest link (with password embedded) is: https://zoom.us/j/97173236268?pwd=V2hhYTAwVVY5cXl5eEFoOUxSYmZGdz09
Cosmic Collisions Abstract: What happens when galaxies collide? Right now, the Andromeda Galaxy is hurtling towards us, on a direct collision course with our galaxy. Surely the Milky Way will not escaped unscathed? For almost a century astronomers have been trying to figure out what happens when galaxies clash, and from that investigation a harrowing tale of starvation, cannibalism, and complicated acronyms has arisen. With today’s massive telescopes and high-tech simulations, we can hope to understand what happens when the largest objects in the Universe go face-to-face. And perhaps we can predict how our galaxy will be changed for the better (or the worse)
Robotic Telescope Editing Contest for August: M82 the Cigar Galaxy
Imagine: 8 Hours of LRGB data and 7.5 Hours of Hydrogen Alpha! Check it out and remember the contest is Only in Canada … Pity!
Global Hands On Astronomy Conference 2020
Local Astronomical Education evangelist Sid Sidhu is enjoying this online conference that is currently under way. Click the link to learn more about the conference program: https://handsonuniverse.org/ghou2020/programme/
Edmonton RASCals Focus on the Deep Sky: relayed by Dave Robinson
Elephant Trunk Nebula by Arnold Rivera. He had to do some colour correction due to filters used: The star on the lower right is Herschel’s Garnet Star (Mu Cephei). It is a red supergiant – one of the largest stars known (it’s diameter is estimated to be larger than Saturn’s orbit). Equipment and details: Celestron RASA 8”Camera: ZWO ASI294 MC Pro (cooled to -16 C) 30s subs, 50 frames, 450 gainArnold Rivera August 22 Lobster Claw Nebula The large nebula in the centre is Sharpless 2-157 (The Lobster Claw Nebula), is described as a “ring nebula surrounding a Wolf-Rayet star (WR157, SAO 20512, mag 9.58)”. To the right edge of this image is NGC 7635 (The Bubble Nebula). Towards the bottom of the image is the small but relatively bright nebula NGC 7538 (in Cepheus), “home to the largest yet discovered protostar (~ 300 times the size of the Solar System)”. In addition, there is a tight grouping of bright stars located just below Sh2-157 – open cluster NGC 7510. Equipment and details: Celestron RASA8, ZWO ASI 294MC Pro ( -16C) 30sec subs, 50 subs.On August 23rd Arnold Rivera imaged the very faint and very large nebula Sharpless 2-129 (The Flying Bat Nebula)Larry Wood from Caroline AB Aug 20. AboveBubble Nebula & M52 and BelowM13Alister Ling August 22 Channeling some E.E. Barnard last night at the microwave tower on the hill above the north shore of Pigeon Lake…. 70mm on full frame, and it is NOT Sagittarius or Scutum.
Press Briefing on Starlink and other mega-constellations
At 11AM on Tuesday August 25th the American Astronomical Society (AAS) and NSF’s NOIRLab will have a press briefing on the SATCON1 LEOsat mega-constellations workshop report. SATCON1 gathered astronomers, satellite operators, dark-sky advocates, policy makers, and other stakeholders to discuss, understand, and quantify the impacts of large satellite constellations on ground-based optical and infrared astronomical observations as well as on the human experience of the night sky. The briefing will be live-streamed on the AAS Press Office YouTube channel (https://www.youtube.com/c/AASPressOffice)
Want to put your image editing skills to the test? Now you can, with the RASC Robotic Telescope image editing contest.
In collaboration with SkyNews, each month the RASC Robotic Telescope team will release the data for an image for the public to edit. Judges from the team will pick a winner out of those submitted. Click here to learn more: https://skynews.ca/introducing-the-rasc-robotic-telescope-editing-contest/
Deep Sky Images from an Edmonton RASCal
Edmonton RASCal Abdur Anwar Captured the Cacoon and Bubble on August 9th
Abdur writes: Finally had a clear night last week and I spent most of my imaging time on the Cacoon Nebula (IC 5146) and the Bubble nebula. I got about 2 hours of data on the Cacoon and about 1.5 hours on the Bubble nebula using an ASI1600mm and an 8″ reflector. Really happy with how they turned out 🙂
Equipment and capture details for each target in order: ASI1600MM Pro ZWO LRGBHa filters Ha: 12 mins (Cacoon) / 27 mins (Bubble nebula) RGB: 20 mins each / 10 mins each L: 60mins / 30 mins Scope: 8″ f3.9 reflector Mount: EQ6R Pro
Cacoon Nebula (IC 5146)The Bubble Nebula NGC 7635 …Caldwell 11
Rho Ophiuchi Cloud Complex by Dan Posey
Bill Weir encouraged Dan Posey to visit the Pearson Site. The result was at stunning photo at this link: https://rascvic.zenfolio.com/posey/head1949f#hebe220b7 This file is large but the click is worth it! Check it out.
Dan writes: “Thanks to Bill kindly hosting last night, as the conditions at Pearson provided that opportunity I have been waiting for. The result isn’t perfect but that just means I’ll need to revisit in the future; I know where I need to be to take a longer stab at this target next year. This is 48.5 minutes (97x30s) using my Sigma 105 at f1.4 and my Canon Ra at iso 640.”
Title: Peering Into the Darkness with the JCMT: Witnessing the Birth of Stars
The birth of stars remains shrouded in mystery. Stars form inside thick puddles of gas and dust located primarily along the spiral arms of the Galaxy. Astronomers use infrared and radio telescopes to peer into and through these murky puddles to witness the birth of stars. For over 25 years the JCMT has been leading investigations to uncover the formation of stars in the Galaxy. In collaboration with the Spitzer Space Telescope, the Herschel Space Observatory, and the ALMA Observatory in Chile, the JCMT has transformed our understanding of stellar birth. Join me on an adventure to uncover nearby stellar nurseries.
David Lee captured the conjunction of the Moon and Mars on August 8th together with a wonderful foreground shot taken from Rithet Bog.
Some Great Planetary Detail
On August 4th Edmonton RASCal Arnold Rivera captured martian suface details. Arnold writes: I managed to observe and image Mars this morning starting at around 6:00 am from north Edmonton. Seeing conditions at the time were above average and the surfacefeatures on Mars included the dark prominent area of Syrtis Major on the north hemisphere and the rapidly shrinking south polar cap: Equipment and details: Celestron CPC1100 (in alt-az mode) Camera: ZWO ASI120MC-S 9.7ms, 2500 frames, processed in RegistaxJohn McDonald captures Jupiter, this time in fairly good seeing shows fair detail. Date 08-08-2020. 8″ Edge SCT on AVX mount. ZWO ASI120MM-S camera with filter wheel and TV Powermate barlow to give focal ration f/25. Captured 1000 frames in R,G and B filters. Stacked best 45% in Astrostakkert. Post processing in Images Plus and Photoshop.John McDonald writes: My best image of Saturn to date. I had fairly good seeing as the image shows. Date 08-08-2020. 8″ Edge SCT on AVX mount. ZWO ASI120MM-S camera with filter wheel and TV Powermate barlow to give focal ration f/25. Captured 1000 frames in R,G and B filters. Stacked best 45% in Astrostakkert. Post processing in Images Plus and Photoshop.
Lucky Imaging of Planets and the Moon
If you want to learn how to capture wonderful images like the above perhaps you should attend the following webinar!
Tuesday, August 11th – 7:00pm ADT / 6:00pm EDT / 3:00PM PDT Nova East 2020 – Lucky Imaging: Astrophotography of the Moon and Planets Lucky imaging is a technique used to capture high resolution images of the Moon and planets. It involves taking as many images as possible, often several thousand, with a high-speed “video” camera and using specialized software to identify and stack only the sharpest images. The talk, presented by David Hoskin, will cover the equipment, software and processing workflow used in lucky imaging.
Edmonton RASCal Mark Zalik – captured this remarkable sequence on August 4th which closely resembles hummingbirds. All Edmonton content kindly relayed by Dave Robinson. Mark writes: Wonderful NLC display tonight! Nice arrays of billows formed way down near the horizon, where the twilight imparted a beautiful cinnamon colour on the NLC. A bit earlier in the display, the clouds formed an ethereal hummingbird.
1680 – C/1680 V1, also called the Great Comet of 1680, Kirch’s Comet, and Newton’s Comet, has the distinction of being the first comet discovered by telescope
1682 – Halley’s Comet or Comet Halley, officially designated 1P/Halley, is the best-known of the short-period comets and is visible from Earth every 75–76 years.
1744 – The Great Comet of 1744, whose official designation is C/1743 X1, and which is also known as Comet de Chéseaux or Comet Klinkenberg-Chéseaux, was a spectacular comet that was observed during 1743 and 1744
1811 – The Great Comet of 1811, formally designated C/1811 F1, is a comet that was visible to the naked eye for around 260 days, a record it held until the appearance of Comet Hale-Bopp in 1997. In October 1811, at its brightest, it displayed an apparent magnitude of 0, with an easily visible coma.
1835 – Halley’s Comet or Comet Halley, officially designated 1P/Halley, is the best-known of the short-period comets and is visible from Earth every 75–76 years. Last apparition was in 1986, and the next apparition is in 2061.
1843 – The Great Comet of 1843 formally designated C/1843 D1 and 1843 I, was a long-period comet which became very bright in March 1843 (it is also known as the Great March Comet)
The First FDAO Virtual Star Party: 7PM August 1st
You are invited to the inaugural Virtual Star Party hosted by Friends of the Dominion Astrophysical Observatory. David Balam, Plaskett telescope operator and Near Earth Object specialist will deliver a presentation on comets. For more information and hyperlinks to the Zoom meeting please click on the following:
Canadian Comet Sleuth David Levy: Webinar 4PM Thursday July 30th
The Canadian Comet SleuthDavid Levy, author and comet hunter Comet NEOWISE has been the sensation of our July skies, the first naked-eye comet for the Northern Hemisphere in ages. David Levy knows all about comets that snag the spotlight. Comet Shoemaker-Levy 9, which broke apart in July 1992 and collided with Jupiter in July 1994, garnered the “Canadian comet sleuth” media attention around the world, including the headline on the very first cover of SkyNews 25 years ago. Join The Royal Astronomical Society of Canada’s Jenna Hinds and SkyNews’ Allendria Brunjes as they sit down with Levy in the next Speaker Series, at 7 p.m. on Thursday, July 30. Levy has discovered 22 comets, given innumerable lectures and written countless articles and more than 30 books — including an autobiography, A Nightwatchman’s Journey. There’s an asteroid named in his honour, and his awards include the Chant Medal of The Royal Astronomical Society of Canada. Click this link to register for this Webinar
Dr Gordon Walker speaks at the Wednesday UVic Open House
North America Nebula region This is a 6 minute test (12x30s) of the North America Nebula with a light pollution filter from Mt. Tolmie. Shot with my Sigma 105 at f2 and my Canon Ra at iso 640
Comet Neowise: An Urban Challenge by John McDonald
Comet Neowise captured from my 8th floor patio in Ross Place.
2020-07-13
Canon Ra with 24-105mm at lens at fl of 105mm on Skytracker mount.
Single exposure at f/4 for 3.2s at ISO 640.Stack of 10 subs cropped from a full frame showing detail of Comet Neowise captured from my 8th floor patio in Ross Place.
2020-07-13
Canon Ra with 24-70mm lens on Skytracker mount.
Combination of 10 frames taken at f/4 for 3.2s at ISO 640. Processed in ACR and Photoshop. Comet was aligned and stars and combined with stars from a single image.From FaceBook by By Ian Terris with thanks from Marnie Essery Comet Neowise reflecting over Thetis Lake.
Bigger, better, faster: how changes in technology drive astronomy data collection by Nat Comeau
Abstract: There are roughly five variables of interest in observational astronomy: where the object was (sky position), what it looked like (spatial resolution), when it was seen (observation time), how bright it was (brightness), and what colour of light it was (spectral resolution). In this talk I’ll give an overview of how enhancements in technology have driven how precisely we can measure these five variables, and how increasing this precision unlocks wonders that were previously invisible to us. From the first naked eye measurements of the planets, to automated networks of telescopes working hand in hand with gravitational wave observatories, I will describe how far we’ve come in astronomy data collection and how much more there is to do.
More Victoria RASCal images and sketches of Comet NEOWISE C/2020 F3
Bill Weir sketched Comet Neowise from Taylor Beach, Metchosin on the evening of July 12th.Comet Neowise C/2020 F3 above the glare of Oak Bay Marina at 11:15PM on July 12th by Reg Dunkley Non tracked 55 mm lens on Canon T3i. 5 Sec at ISO 3200From Bamberton: Nathan writes: My dad got a picture with his Pentax K1 with a Macro 1:2.8 100mm (weather resistant) lens, with a 20 second exposure, an F5.6, and ISO 800, mounted on with an Astro tracer.From the top of Mount Douglas on July 12th by Remi OdenseFrom Majestic Park on July 12th by Remi OdenseLauri Roche captured Neowise this morning about 12:15 am. Lauri writes: I didn’t have to go far: the balcony of my townhouse. Struggling with aperture, ISO, focussing and an old camera but at least it’s there.Comet C/2020 F3 Dawn July 13 2020 David Lee writes: I was determined to see if I could see more detail in the comet this morning so I brought the Star Adventurer tracker with me. As with most of my imaging adventures something goes wrong. This morning I tried a different mounting not realizing my orientation of the camera would be limited. Usually not a problem when your subject is isolated with no landscape. So my composition is a bit crooked. With this exposure the stars are peaking through and the second tail is more apparent. Camera: Nikon Z6 Lens: Nikkor 24-70/4 set at 70mm Sensor ISO: 4000 Exposure: 13 seconds at f/4 Processing: Adobe Photoshop CC Tracking: Skywatcher Star AdventurerDorothy Paul captured this image 3:30AM on July 12th from the bench at Hollydene Park at the east end of Arbutus Cove.Dorothy Paul sketched Neowise at 3:30AM on July 12th from the bench at Hollydene Park at the east end of Arbutus CoveDorothy and Miles Paul walked down to Hollydene Park an hour earlier this morning than yesterday. The comet was even better positioned than yesterday for viewing from the bench at the end of the path, overlooking Haro Strait.
Useful Comet Websites
The following websites are a rich source of information about visible comets including Comet NEOWISE C/2020 F3. Check them out:
Computer Science in Astronomy: A UVic Open House Webinar
You are invited to attend the Wednesday UVic Open House which starts at 7:30PM. This week student Sarah Clapoff is talking about the important role of comp sci in astronomy. The zoom guest link (with password embedded) is: https://zoom.us/j/97173236268?pwd=V2hhYTAwVVY5cXl5eEFoOUxSYmZGdz09
Doug used a Canon 60Da and a Sigma 10-20 zoom at 10mm looking eastward from his deck in Downtown Victoria. He captured a nice conjunction of the Moon, Jupiter and Saturn. A red light from Trial Island is visible.Doug then turned around and looked almost straight up there were very interesting clouds tangled up with the dipper. Since the shot was taken at 1:30 AM those clouds are not illuminated by the sun. They might resemble noctilucent clouds but are probably much lower cirrus cloud illuminated by the Moon.
David Lee’s Creamsicle Moon
Could Creamsicles overtake Viva Puffs to become the favourite Astro Cafe summer treat? Penumbral Eclipse July 4. 2020 Billed as a subtle eclipse the penumbral shadow is subtle. What David didn’t expect was the orange ball that emerged from the horizon. A nice creamsicle colour! Camera: Nikon Z6 with FTZ adapter Lens: Nikkor 300/4 AFS with 1.4 x TC Effective 420mm cropped. Sensor ISO: 1600. Exposure: 1/100 sec at f/5.6 Processing: Adobe Photoshop CC 2020
Martian Citizen Science: Zoom Webinar at 11AM Tuesday
Meg Schwamb (Queen’s University Belfast) will be speaking about “Exploring Mars with 150,000 Earthlings.”
Planet Four (http://www.planetfour.org) and Planet Four: Terrains (http://terrains.planetfour.org) are citizen science projects mining Mars Reconnaissance Orbiter (MRO) images to explore how the south pole of Mars is sculpted by the never-ending cycle of freezing and thawing of exposed carbon dioxide ice. In the summer, carbon dioxide jets loft dust and dirt through cracks in the thawing carbon dioxide ice sheet to the surface where winds blow the material into the hundreds of thousands of dark fans observed from orbit. Planet Four enlists over 136,000 volunteers to map the sizes, shapes, and orientations of these fans in high resolution images. Planet Four is creating an unprecedented wind map of the south pole of Mars in order to probe how the Martian climate changes over time and is impacted year to year by dust storms and other global-scale events. Planet Four: Terrains, aims to study the distribution of the jet process across the south pole and identify new targets of interest for MRO. Over 12,000 people have helped identify the channels and pits (dubbed araneiforms) carved during the jet formation process. In this talk, I’ll give an overview of Planet Four and Planet Four: Terrains and present the latest results from these projects.
Astronomy Poem inspires Mystery Novel: from Marjie Welchframe
“Though my soul may set in darkness, it will rise in perfect light; I have loved the stars too truly to be feaful of the night.”
From poem The Old Astronomer Sarah Williams/S.A.D.I. English poet/novelist, 1868
Novelist Ian Rankin titled his Inspector Rebus novel Set in Darkness after these lines. The poem is written from the perspective of an aged astronomer on his deathbed bidding his student to continue his humble research. The lines have been chosen by a number of professional and amateur astronomers as their epitaphs. Entire poem: https://en.wikisource.org/wiki/Twilight_Hours_(1868)/The_Old_Astronomer
