President’s Message – July 2022

Posted by as President's Message

Randy Enkin - Luna Cognita
Randy Enkin – Luna Cognita

The first science images from the James Webb Space Telescope were released to huge fanfare last week. I’m not surprised that my social media was filled with the news, commentary, analysis, and silly memes. My favourite is the melding of Van Gogh’s Starry Night into the SMACS 0723 galaxy cluster. What surprised me was how much the images caught on with the general public. The images are indeed beautiful, and the public relations teams know how to get the message right. But there is a clearly a desire, a fascination to follow the story of this telescope and its potential.

I used to be “the general public”. When they went to the moon during the Apollo missions, I realized I had to learn all I could about astronomy. Most importantly, I decided to become a scientist. And through good fortune and a fair amount of work, I got to make a career as a research scientist – in geology rather than in astronomy, but my fascination with astronomy never left.

Is astronomy important? I really don’t know. But science and science literacy certainly is, and quite possibly the James Webb Space Telescope will attract the general public to find out more. People will look at the beautiful images and ask what is going on. They will learn about how 30 years of science and engineering went into producing the images. They will find out about the scientific edifice which has built up over millennia to place the new research in context.

The first batch of images masterfully span the range of subjects that the space telescope will research: the birth of stars, the death of stars, the structure of galaxies, and the early universe. The fifth image, or actually spectrum, reveals an application that could only have been dreamed of when the
instrument was designed – composition of an exoplanet spectrum.

Exoplanet: WASP-96 B

They weren’t even sure that exoplanets could be located when the space telescope was first designed.
We amateur astronomers get to play an important role as more space telescope data get released. Let’s keep up with the research and help our wider community understand what it means. Let’s help with outreach events whenever possible. Let’s do astronomy.

Astro Cafe Logo

On that note, the Victoria Centre Astro Café went virtual for two years. It was a tonic to our isolated lives during the worst of the covid-19 pandemic. Many thanks to Chris Purse and Joe Carr for their devoted work to keep Astro Café up and running so well! In May, we ran our first attempts at hybrid meetings, in person at the Fairfield Community Centre and online over Zoom. The response has been very positive, and we will continue the hybrid Astro Café format every Monday evening (except statutory holidays) at 19:30 starting September 12. WE NEED VOLUNTEERS. The roles are not onerous, but they are essential. Each evening we will need a host and a tech. Please be brave. Please be generous.

Look Up,
Randy Enkin, President@Victoria.RASC.ca

2022 Island Star Party

Posted by as Special Events

The Cowichan Valley Starfinders Astronomy Club and the Royal Astronomical Society of Canada, Victoria Centre invite everyone to the dark skies of South Cowichan for the 25th Annual Island Star Party!

Location: Bright Angel Park, 4528 Tigwell Rd, Duncan, BC, Canada

Starts Fri Aug 26, 2022, 4:00 pm
Ends Sun Aug 28, 2022, 10:00 am

Two Full Nights of Observing, Guest Speakers, Door Prizes, Telescope Mentoring, Walking Trails, Swimming.

  • Admission includes camping for two nights on the observing field in designated areas.
  • Motorhomes, travel trailers, campers, tents and vehicles welcome, however this is bare camping, with no services in the camping area.
  • Flush toilets, potable water, extra parking available a short walk from the observing field.
  • Not a camper? There are a good selection of accomodation a short drive away in Cowichan Bay, Cobble Hill, Shawnigan Lake, Cowichan Station, and Duncan. Reserve early, since the Cowichan Valley is a popular vacation destination.
  • Gates to the park are locked at 9PM, so park outside the gate if you are not staying overnight!

Full Weekend Admission: (Includes 1 year CVSF membership) – cash only please

  • Individual: $20.00
  • Family: $30.00 Adults up to 3 Children (17 years or younger)
  • Evening “Drop In” Free, but donations welcome
  • This event is open to the public. Membership in CVSF or RASC is not required.
2022 Island Star party – printable poster (16.8Mb pdf)

President’s Message – June 2022

Posted by as President's Message

This week, the citizens of the Earth were given a wonderful present. The Gaia Data Release 3 was publicized at 9 UT, June 13. And yes I was awake at 2 in the morning to watch the event. The Gaia satellite has been mapping 2 billion (!!!) points of lights in the sky – stars, galaxies, quasars, and solar system objects. They are measuring positions, distances, motions, colours, and spectra. For an Astro Café talk I prepared about the Gaia Data Release 2, I displayed a plot of the number and angular precision of catalogued stars. From the Hipparchus’ catalog of 1000 stars in 150 BCE to the best Earth-based collections from last century, there was a continuous but slow improvement. But with space-based measurements over the last 20 years, the catalogs have improved by orders of magnitude! And Gaia should continue collecting data through to 2025 to continue this trend.

Gaia Data Release 3 - group photo
Gaia Data Release 3 – group photo

The branch of amateur astronomy pejoratively labeled “armchair astronomy” sounds very passive, but we delight in the personal journey to discovery, which the professional astronomers afford us by collecting and analysing these extreme data sets. One of my passions is following the trajectory of knowledge from the early astronomical observations to the present. For example, I love to learn how the first stellar spectra measured in the 19th century led to Annie Jump Cannon’s stellar classifications (Only Bad Astronomers Forget Generally Known Mnemonics), leading to the Hertzsprung-Russell colour-magnitude diagram, and further leading to amazing insights such as the age of stars. And now such analyses can be extended to hundreds of millions of stars with the public release of the Gaia data.

The Gaia mission is akin to a gothic cathedral. It is a huge edifice, erected with major societal investment that was accomplished by many, many ordinary people who each do their small part. This edifice is a public good which inspires, and makes us bigger and better human beings.

Look Up,
Randy Enkin, President
(email)

President’s Message – May 2022

Posted by as President's Message

Every year, the Victoria Centre of the Royal Astronomical Society of Canada sponsors two awards at the Vancouver Island Regional Science Fair. Well, not every year – we missed the last two years because of covid. This year, the Science Fair was virtual and about one quarter the size of the pre-covid event – 52 projects – with 6 assessed to be on astronomical or astronomy-adjacent themes. Many thanks to our representatives, Dorothy Paul and David Lee, for interviewing the students and arriving at their decisions. Each winner received a recognition certificate, a RASC family membership (for the student and one adult), a copy of Explore the Universe, and the offer of a classroom visit from our Schools Programs officers. We also invited the prize winners to present their projects at the Astro Café.

Nathan Hellner-Mestelman and Beata Ariana-Minniti
Nathan Hellner-Mestelman and Beata Ariana-Minniti

Grade 7 student Beata Ariana-Minniti created a very clever solar heat collector, coupled to a battery charger. Nathan Hellner-Mestelman (Grade 9) worked out the optimal orbit for cube-sats to avoid chain-reaction collisions. These students wowed us with their presentations at the Astro Café. Nathan was included in Team Vancouver Island at the Canada-Wide Science Fair and went on to win a silver medal.

As this year of Astro Cafés come to a close, we should all thank Joe Carr and Chris Purse for getting us through the fully online times and the transition to hybrid meetings. We have grown closer, despite the isolation of the last couple of years, because of their efforts. We’ll see you again at Astro Café starting in September. It is essential that we get more people to step up to help continue the Astro Café.

I want to congratulate our strong community who pulled together to put on all the facets that went into International Astronomy Day on May 7. We did not have much time to organize, as we did not even know if there would be in-person events until March. David Lee and Laurie Roche coordinated our volunteers wonderfully. There are others among you who are perfectly capable and I hope willing to take on their roles for future events. Astronomy outreach is very satisfying. Let’s share the load in making these opportunities happen.

The amateur astronomy community in Victoria is strong. Our club is extremely fortunate to have sufficient funds to make fund-raising unnecessary and sufficient volunteers to put on several high quality events. We are not lacking a strong Board and Council. Nevertheless, some members are not joining in, I think because they have not imagined that their contribution would be valuable and fun. Let me assure you that indeed you will get more out of such volunteerism than you put in.

Look Up,
Randy Enkin (email)

Astronomy Cafe – May 30, 2022

Posted by as Astro Cafe

Video transcript of the meeting

  • Telescopes – David Lee on behalf of Sid Sidhu
    • There are telescopes for loan to RASC VIctoria Centre members
    • Members who have spare eyepieces, please contact Sid, since we need more selection for loaners
  • Kitt Peak – David Lee
    • PixInsight workshop review
    • Kitt Peak is reopening, offering remote telescope images
    • OGS 12.5″ telescope, Paramount ME and 294MC OSC imaging camera – available for rent approximately US300/night for exclusive use
    • McMath Pierce Solar Telescope – now a public outreach facility, supporting Noirlab feeds
  • Brave New World – New Scientist – Ken Atkinson
    • TESS images – citizen science opportunities
    • zooinverse.org – see planet hunters
  • Astronomy Public Outreach – Randy Enkin
    • Island Star Party – last weekend in August at Bright Angel Park in southern Cowichan Valley – will be co-sponsored by Cowichan Valley Starfinders, RASC Victoria
    • Saanich Fair astronomy outreach – need volunteers
  • Meteor Storm Tonight – May 30, 2022 – Randy Enkin
    • Debris from Comet 73P/Schwassman-Wachmann 3, a Jupiter family comet
    • No observations after 1930, until 1979 again
    • Period: 6.5 years
    • In 1995 brightened 400x – Hubble Space Telescope imaged the pieces of the comet
    • In 2006 Spitzer Space Telescope imaged
    • 2022 apparition could be spectacular
    • How about observing this apparition? Cloud cover may be a factor.
  • Star Parties at the DAO/CU – Lauri Roche
    • June 4 – next star party
      • Need some volunteers with telescopes
      • Speaker: White Dwarfs – Simon Blouin
    • Last Star Party – thanks to Dave Payne and David Lee for working on the Celestrons, Sherry Buttnor operated the 16″, solar telescopes were operating early in the evening.
    • Centre of the Universe displays – many are disabled due to old age. Needs a refresh, but requires funding. Skilled volunteers would be very welcome.
  • RASC General Assembly – June 24, 2022 – Lauri Roche
    • Tickets are now available – $20 for members for 4 days
    • Lots of interesting speaker, workshops, social events, and AGM business meeting
    • For those of us who live in the Pacific Time Zone – runs between 9AM and 4PM
    • Some sessions will be recorded, to be viewed later
  • Last Astronomy Cafe 
    • Thanks to the volunteers who have hosted Astronomy Cafe
    • Need volunteers when Astro Cafe restarts in the Fall
    • Hybrid format is working – in-person and Zoom
    • Sep 12th – first Astro Cafe meeting
    • Alex Schmid laptop (from UVic), external speakers and microphone
  • Galactic Poster – Nathan Hellner-Mestelman 

Astronomy Cafe – May 16, 2022

Posted by as Astro Cafe

Video transcript of meeting

  • Special General Meeting for RASC Victoria Centre – Randy Enkin
    • Have a quorum of over 25 Victoria Centre members in attendance
    • Changes to ensure our bylaws are consistent with the national bylaws and BC Society’s Act requirements
    • Call for volunteers to work on more revisions to Victoria Centre bylaws over the next few months
  • Need volunteers for Astronomy Cafe – contact Randy Enkin
    • Zoom host – recording and posting the video transcripts online
    • Meeting host – tracks and runs the meetings
  • Star parties at Observatory Hill – Lauri Roche
    • May 21, Jun 4, 18 – hybrid party in-person and online on Zoom & Youtube
      • May 21 – Early Discoveries made by the Plaskett Telescope – Jim Nemec
    • Every Saturday night after the July 1st break for the summer
    • Volunteers needed: telescopes in the parking lot, RASC welcome table, Plaskett dome tour hosts, 16″ telescope operators, other roles – contact Lauri
    • Electronically-Assisted Astronomy – start planning to use at the Star Parties in future – contact Dave Lee
  • Nanaimo Astronomy – Janeane MacGillivray
    • Astronomy From Kitt Peak – David Lee presenting at upcoming meeting
    • RASC Victoria members are welcome – send an email
  • Total Lunar Eclipse reports from members – May 15/16, 2022
    • Cloudy photos from Saanich after being skunked at Cattle Point – David Lee
    • HDR smartphone photos through eyepiece, join observations from Cosmic Generation group – Nathan Hellmen-Mestleman
    • Lunar Crater transits & mare cookies – Randy Enkin
    • Cloudy photos from Sidney – Chris Gainor
    • Observed from Brentwood Bay while raining – Lauri Roche
    • Just a glimpse from Taylor Beach in Metchosin, but spotted ISS – Bill Weir
  • Plaskett Images – Dan Posey
    • Composite image of the images over last few years 
    • Whirlpool Galaxy, Whale Galaxy, Deer Link Group NGC 7331, Fireworks Galaxy NGC 6946, M100, M63 Blackeye, NGC 3718 Arp galaxy, Hickson 44
    • Plaskett nights are for enjoyment and a reward for RASC Victoria members and volunteers
    • Review of techniques to process Plaskett image data into nice images
  • Skynews magazine – Bruce Lane
    • Review of upcoming articles
    • Please send Total Lunar Eclipse observing reports to Bruce (Editor)
  • Black Holes – Randy Enkin
    • M87 Black Hole – April 22, 2019 – Event Horizon Telescope
    • Sagittarius A* Supermassive Black Hole – May 16, 2022 – BBC Science Focus article
    • Galactic nucleus observed by Karl Jansky in 1931 – published in Nature, 173, 985-987, 1954
    • Angular resolution problem solved by the Event Horizon Telescope
    • Motion analysis of objects and energy near the Event Horizon of a black hole
    • Lauri Roche’s “black hole” birthday gift

Total Lunar Eclipse – May 15/16, 2022

Posted by as Observing Highlights

On Sunday, May 15th, 2022, we will be able to view a total eclipse of the Moon (weather permitting) from Southern Vancouver Island, British Columbia, Canada. The Moon will be in full eclipse after rising from the southeastern horizon, remaining fully eclipsed for about an hour before transitioning into a partial phase as it climbs in altitude and moves to the south. The Lunar Eclipse will end just before midnight.

Enlarge this video to view details for the Lunar Eclipse timing and phases. Depiction of this particular Lunar Eclipse is as viewed from Victoria – generated by Starry Night Pro Plus 8 and captured using Snagit 2022.

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.

Total Eclipse Begins8:29PM
Moon Rises8:42PM – probably visible 10-15 mins later
Greatest Eclipse9:12PM
Total Eclipse Ends9:54PM
Partial Eclipse Ends11:51PM
Above Eclipse times are for Pacific Daylight Time (PDT) for the west coast of North America, and are calculated from UT as presented in the Observers Handbook 2022, pages 127-131.
Lunar Eclipse diagram – NASA

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

Observing Tips

What do you need?

Everything from your eyes, binoculars and telescope are suitable. Bear in mind this is a long process, so 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 the early fully-eclipsed stage. Observing from a hill will help you spot the rising Moon earlier than if you observe from lower elevations or sea level.

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 2022, page 131.

2019 Total Lunar Eclipse from Victoria – composite photo by Joe Carr

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 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 2022
Brenda Stuart – illustrations


More information:

Astronomy Cafe – May 9, 2022

Posted by as Astro Cafe

Meeting video transcript

  • Astronomy Day thank you’s to volunteers – Lauri Roche & David Lee
    • The in-person interaction was an engaging experience 
    • The younger volunteers were a real delight
    • Sidewalk astronomy from the museum plaza, with very good weather
    • History of Astronomy Day at the Royal BC Museum – Sid Sidhu
    • UVic, Camosun, Victoria High School, Shawnigan Lake School was a good collaboration
    • Galileo Moments
      • Daytime at the RBCM: more than 800 – 231 outside, 654 inside
      • Evening on Observatory Hill: 29 volunteers and more than 100 members of the public
    • A lessons learned meeting with leads – David Lee
    • Publicity worked pretty well – Chris Gainor
    • Hubble history book will be available at Astronomy Cafe next week – Chris Gainor
    • Public lectures – about 40 attendees for each of 4 presentations – Randy Enkin
    • Video recording for lunar observing national feed – David Lee recorded Randy Enkin and Bill Weir
    • Attendance compared with previous Astronomy Days? 
      • Despite a shorter day at RBCM, attendance was very good
      • Previous attendance was between 1,700-2,000 at our bigger events
    • A high quality experience for attendees and children’s activities front-and-centre was a good idea – Jim Hesser
    • Met some interesting people who were very interested in astronomy – Dave Payne
    • Offered to help people to make use of their telescopes – Dave Robinson
    • Astronomy Day – event info and photo gallery
  • M33 Triangulum Galaxy image – Randy Enkin & John McDonald
    • HII star formation region
    • Compared with Barnard’s Loop shock wave (10º)
    • Bubble is the form the shock wave takes caused by multiple stars
    • M33 is a floculant galaxy – clumping of hydrogen material
    • What is a “typical” galaxy? – Dorothy Paul
    • April 2017 Skynews article (PDF) – Orion’s Aura – Orion Eridanis Super Bubble – Reg Dunkley
  • James Webb Space Telescope progress report – Chris Gainor’
    • Image sharpness check completed for all instruments
    • Instrument Modes Check Off – happening next
    • Images will likely start in June or July
    • Diffraction spikes in the images – causes?
    • Difference fields of view for each camera/sensor
  • Special General Meeting at May 16th Astronomy Cafe – Randy Enkin
    • Need a quorum of 25 Victoria Centre members in attendance
    • Changes to ensure our bylaws consistent with the national bylaws
    • Our Secretary Jill Sinkwich is finding several parts of Victoria Centre bylaws that will need to be changed
    • Proposed changes are already sent out to members
  • Need volunteers for Astronomy Cafe – Randy Enkin
    • Zoom host – recording and posting the video transcripts online
    • Meeting host – tracks and runs the meetings
  • Star parties at Observatory Hill – Lauri Roche
    • May 21, Jun 4, 18
    • Every Saturday night after the July 1st break for the summer
    • Volunteers needed: telescopes in the parking lot, RASC welcome table, Plaskett dome tour hosts, 16″ telescope operators, other roles
    • Electronically-Assisted Astronomy – start planning to use at the Star Parties in future – contact Dave Lee
  • National General Assembly – June 24-27 (online) – Lauri Roche
    • Speakers, co-current sessions, virtual field trips
    • AGM
    • Seeking submissions from members to give half hour talks about their passion – submit form by May 15th – contact Lauri

Astronomy Cafe – May 2, 2022

Posted by as Astro Cafe

Video transcript of meeting

  • Intro – Randy Enkin
  • Astronomy Day – David Lee
    • Final check-in this Wednesday evening for leads before Saturday events
    • International Astronomy Day – May 7, 2022
  • Vancouver Island Science Fair intro to awardees – Randy Enkin
  • VI Science Fair: Light At Night – Beata Ariana-Minniti (Cedar Hill Middle School student)
    • Creating a bus stop light using natural resources
    • Parts: Thermoelectric generator, voltage regulator, LED light
    • Heat storage: sand in an insulated box
  • Canada-wide Science Fair: Lower CubeSat orbit could Protect Space Infrastructure – Nathan Hellner-Mestelman
    • CubeSats collide, creating dangerous space debris that orbits the Earth – Kessler Syndrome
    • Quantifying the collisions
    • Lowering the hazard: choosing best orbits, adding micro-thrusters to CubeSats to change orbit or de-orbit
  • Astrophotos from southern Arizona – John McDonald & Garry Sedun
    • Caldwell 30 galaxy
    • M33 Triangulum Galaxy
    • NGC 2903 barred spiral galaxy
    • IC 433 Jellyfish Nebula
  • Eclipse Crater Timing – Randy Enkin
  • James Webb Space Telescope Update – Chris Gainor
    • All onboard instruments are now in focus
    • Commissioning of instruments next, then science projects begin

Astronomy Cafe – Apr 25, 2022

Posted by as Astro Cafe

Video transcript of meeting

  • Discussion about Astro Cafe’s new hybrid online and in-person meeting, room characteristics
  • Astronomy Day – May 7 – Lauri Roche
    • Museum 10AM-3PM
    • Online Lunar cross-Canada event – 5:00-6:30PM – RASC National, David St. Jacques (Canadian astronomer)
      • David needs some video clips from members observing the Moon, so he can assemble a short video feed if the weather is bad.
    • Observatory Hill – 7:30-11:00PM
      • Star party with observing
      • Hubble & JWST by Chris Gainor
      • Masks recommended
    • Please volunteer – contact Lauri Roche (email) or David Lee (email)
  • Astrophotos – Brock Johnston
    • Supernova in galaxy NGC 4647, near M60 in Virgo
    • M82 galaxy showing Ha emissions thanks to narrowband filters
  • Astrophotos – Dave Payne
    • M81 Bode’s galaxy
    • Needle galaxy NGC 4565
    • Asteroid 5116 Korsor passes in front of NGC 3384 galaxy
    • M65 & M66 odd couple of galaxies
    • Rejection frame analysis
  • Astrophotos – Martin Gisborne
  • Discussion about Astro Cafe’s new hybrid online and in-person meeting
  • James Webb Space Telescope – Chris Gainor
    • Still about a month away from scientific images and data
  • “The Great Debate” – Lauri Roche & Chris Gainor
  • Ballooning satellite populations in low Earth orbit portend changes for science and society – April 22, 2022 Physics Today article – John McDonald
  • Debate on contentious issues surrounding space tourism and other space exploration – Lauri Roche, Chris Gainor, Martin Gisborne