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Announcements / ISS map for tonight, Sunday, Jan. 20, 2019
« Last post by Jeff.Booth on Today at 01:12:24 PM »
Here is the ISS path map from

Announcements / Re: Total Lunar Eclipse Jan 21 @ 00:12
« Last post by Jeff.Booth on January 18, 2019, 01:07:14 PM »
Hi back ... OK   ... just got to the bottom of this one ... maybe.... :(

It is a lunar transit from my location, as predicted here:

Others can go to that website, enter their latitude and longtitude and see what their view will be.

For my location, the attached graphic, from that website, shows an enticing prediction for a LUNAR image.....

Also, my Stellarium started crashing every time I used it, so I uninstalled and reinstalled. There is a screen cap of the Moon around this time from the newest installation of Stellarium -- and it seems to show the ISS pretty well on top of the Moon.

If anyone near here is going to try to image it, I expect it would have to be a multi-frames per second setup, such as a planetary camera, webcam, DSLR on video   etc   etc.  And even then, start taking video before the predicted transit and don't stop taking it until after it is supposed to be over.   Then, check all the individual frames ......   
.... but then, that is a "normal" way how this sort of thing is done.


PS:  Who knows ?  LOL
Announcements / Re: Total Lunar Eclipse Jan 21 @ 00:12
« Last post by SubOrbitalRoger on January 18, 2019, 12:00:29 PM »
I'm really looking forward to this, but I'm an eclipse junkie.

You won't be able to see the ISS as it passes close to the Moon, because it will be in the Earths shadow at the time, though.  According to Heavens-Above, the ISS will rise in the southwest at 17:43.33 at magnitude 0.6, will be -0.6 when it reaches 10 degrees above the horizon at 7:45:41 and then goes into the Earth's shadow 8 seconds later at 7:45:49.

There could be some lunar occultations, though.

Announcements / ISS close pass and the Total Lunar Eclipse Jan 21 @ 00:12
« Last post by Jeff.Booth on January 18, 2019, 06:14:45 AM »
Local Type: Total Lunar Eclipse, in Oakville
Begins: Sun, Jan 20, 2019 at 9:36 pm
Maximum: Mon, Jan 21, 2019 at 12:12 am 1.20 Magnitude
Ends: Mon, Jan 21, 2019 at 2:48 am
Duration: 5 hours, 12 minutes


International Space Station will have a close pass just before 8 pm.  Please see Stellarium screen cap.


Weather forecast, as of Friday 6 am is "Mostly Sunny" for Sunday.

Fingers crossed
Announcements / Re: Total Lunar Eclipse Jan 21 @ 00:12
« Last post by Muhammad.Ahmad on January 17, 2019, 05:27:35 PM »
The Observatory gates will open at 7:30 PM on Sunday night for those wanting to view or photograph the eclipse.
Announcements / Re: Heavy METUL #7 - Waxing Gibbous Moon 91%
« Last post by SubOrbitalRoger on January 15, 2019, 11:42:32 PM »
I had hoped to use this evening as a "warm up" for the Lunar Eclipse two nights later.

However, the current forecast is not looking very good for either night.

The decision to cancel Friday night (the 18th) will be made at, or shortly after, the Board meeting on the evening of the 16th. 

At the moment, Eclipse evening is still on and the gate will be open at 7:30pm.  This should give everyone plenty of time to set up their own telescopes, or grab one of the Centre's Loaner scopes.
“Making Lunar Lemonade: Tips, Tricks, and Targets for Observing the Full Moon”

Chris Vaughan, B.Sc.

Chris Vaughan is a professional Exploration Geophysicist and Astronomer (1982 graduate of University of Toronto) with a passion for education and public outreach. He is the recipient of the 2014 Bertram Topham Award for Observing and the 2013 and 2014 Andrew Elvins Awards for Promotion of Astronomy from the Royal Astronomical Society of Canada - Toronto Centre. Since 1996, Chris has been visiting classrooms, hosting science-themed assemblies, running science clubs, and holding Star Parties for schools and other groups around the GTA. He is also the author of the Astronomy Skylights newsletter and an operator of the DDO's 74" Great Telescope. Chris also provides us with our monthly ‘In the Night Sky’ updates.

February 7, 2019 at 8:00 PM

The Royal Canadian Legion Branch 551
79 Hamilton Street North, 2nd floor
Waterdown, Ontario  L0R 2H0

Image Credit - Chris Vaughan
Announcements / Board Meeting at the Observatory
« Last post by Muhammad.Ahmad on December 27, 2018, 07:40:12 PM »
8:00 PM at The Observatory.

All members are welcome to attend.

“How We Got to the Moon and Other Space Exploration Triumphs”

Ian Shelton, BSc, MSc, PhD
Astronomy Lecturer, University of Toronto
Chair, David Dunlap Observatory Defenders

Dr. Shelton has spent 30 years studying variations in the brightness and the spectra of stars to learn about their structure, composition and evolution. He has taught Physics and Astronomy at Mount Allison University in New Brunswick, studied the Aurora at Athabasca University in Alberta, and continues to teach Astronomy summer courses at the University of Toronto. Dr. Shelton is an honorary Lifetime Member of the Royal Astronomical Society of Canada in recognition for his discovery of Supernova 1987A, the first supernova visible to the unaided eye since Kepler's supernova of 1604. He has been a staff member at some of the largest observatories in the world, including the 6.5-metre MMT in Arizona and Japan's 8.3-metre Subaru Telescope in Hawaii. As Chair of the David Dunlap Observatory Defenders (, he is deeply committed to preserving the DDO and surrounding lands to ensure that the campus continues to operate as a world-class astronomical and astrophysical research facility and a centre of excellence in public outreach.

January 3, 2019 at 8:00 PM

The Royal Canadian Legion Branch 551
79 Hamilton Street North, 2nd floor
Waterdown, Ontario  L0R 2H0

Members of the public are welcome.

Image Credit -
Announcements / Re: Astronomy Technology Today
« Last post by Muhammad.Ahmad on December 20, 2018, 09:10:50 PM »
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