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Astronomy Edmonton
Royal Astronomical Society of Canada, Edmonton Centre. Promoting public awareness in astronomy, including local meetings & events. Most tweets by
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Astronomy Edmonton Apr 19
This morning's Full Moon, complete with lunar halo. Thanks, Cody!
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Astronomy Edmonton Apr 19
Replying to @EdmontonRASC
3/3 The interplay between solar & lunar cycles & the non-integer relationship between them is a huge challenge in calendrics, with the fluctuating date of Easter being a key driver/discussion point of calendar reforms in the 4th & 16th centuries. In 2019 we get a late Easter.
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Astronomy Edmonton Apr 19
Replying to @EdmontonRASC
2/ Easter generally occurs on the 1st Sunday after 1st full moon of spring. In 2019 technically this is 2nd FM, with 1st having occurred just hours after vernal equinox on Mar 20, however Easter is determined based on "ecclesiastical full moon" which can be no earlier than Mar 21
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Astronomy Edmonton Apr 19
1/ Full Moon officially happened earlier today, Apr 19, at 05:12 MDT. The April Full Moon is known in the Cree culture as Niskipisim, the Goose Moon, for the month the geese return, an indication of the coming of spring.
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Astronomy Edmonton Apr 18
Quite a halo around the Full Moon just now.
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Astronomy Edmonton retweeted
Calgary RASC Apr 18
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Astronomy Edmonton Apr 14
As for seeing grains of dirt, that is not remotely possible. Under "perfect" atmospheric conditions, from Earth we can resolve lunar features on the scale of 1 kilometre. More detailed imagery is generally available only from lunar orbit.
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Astronomy Edmonton Apr 14
I suspect that if we had used my cell phone to photograph that black hole it might not have turned out as well as it did. 🤓 Photographs from Earth's surface are also subject to atmospheric turbulence as was the case here.
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Astronomy Edmonton Apr 13
And with that, volunteers have packed up & ended our second & final night of St. Albert Sidewalk Astronomy. Thanks to the 100+ people who turned up & shared the sky with us!
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Astronomy Edmonton Apr 13
Good view tonight of Clavius, a giant (231 km!) crater with an arc of smaller, but still sizable, craters on its floor. Home of the fictional Clavius Base in the famous sci-fi book & film "2001: A Space Odyssey". This pic captured with the aid of Arnold Rivera's 11 inch telescope
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Astronomy Edmonton Apr 13
Moon is now 8.5 days "old" & has entered waxing gibbous phase after being at 1st quarter last night ( ), revealing a new strip of territory. Note prominent crater Copernicus (illuminated rim, dark floor) just inside lunar terminator (= day/night boundary)
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Astronomy Edmonton Apr 13
St. Albert Sidewalk Astronomy going strong with a dozen or so members of the public. 6 volunteers & 3 telescopes, we'll be set up behind St. Albert Place until 11pm.
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Astronomy Edmonton Apr 13
Confirming that we are again a GO tonight for St. Albert Sidewalk Astronomy just behind St. Albert Place, 9-11pm. Come see the Moon, Mars, the asteroid Pallas & more.
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Astronomy Edmonton Apr 12
We're now done for the night at St. Albert Place. About 50 members of the public enjoyed views of the Moon, the planet Mars, the asteroid Pallas & the double star Castor among other attractions. Weather permitting we'll be back for more on Saturday night, 9-11pm.
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Astronomy Edmonton Apr 12
Tonight's 1st quarter Moon, captured by eyepiece projection thru volunteer Sharon Tansey's 8-inch reflecting telescope.
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Astronomy Edmonton Apr 12
St. Albert Sidewalk Astronomy night. But guess what, it's dark, & using a flash camera would be rude! Here a visitor observes the asteroid 2 Pallas thru Murray Paulson's 5-inch refractor.
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Astronomy Edmonton Apr 12
Confirming we are a GO for Sidewalk Astronomy at St. Albert Place tonight! members setting up telescopes for public use right now, & will be in place until 11pm. Come join us if you can for free views of the Moon, Mars & more. Details below:
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Astronomy Edmonton Apr 12
Replying to @EdmontonRASC
2/ St. Albert Astronomy Day marks 2 anniversaries Today April 12 marks 58th anniversary of Yuri Gagarin becoming 1st human in space,& this year 2019 marks 50th anniversary of Apollo 11 moon landing. 1st quarter moon is well placed for observation of Sea of Tranquility
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Astronomy Edmonton Apr 12
St. Albert residents, come enjoy free sidewalk astronomy tonight/tomorrow Fri/Sat in Millennium Park just behind St. Albert Place (see map). Volunteers from will set up telescopes on site from 21:00 - 23:00, WEATHER PERMITTING. Follow this Twitter feed for updates.
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Astronomy Edmonton retweeted
Nick Riemann Apr 10
An OUTSTANDING night at our “Night of Science”! Thanks to all students and staff who helped out, for the expertise and and for showing eager young minds to always look up...even when there are clouds!
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