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The Astronomical League

The Astronomical League

  • AR 12599 on Oct 10

    Seeing not so great today, so it was hard to produce a decent image. This is AR12599 which erupted on the 8th.

    • Read more about AR 12599 on Oct 10
  • Active Region 12597 on Sept 27 by Brian Kimball

    Took advantage of the stable seeing this morning. This was taken with a 6" f8 refractor and a Lunt Hershel wedge. 

    • Read more about Active Region 12597 on Sept 27 by Brian Kimball
  • Prominence on Sept 26 by Brian Kimball

    Managed to get out this morning for some solar fun; the seeing was decent. Equipment: Lunt LS100 solar scope.

    • Read more about Prominence on Sept 26 by Brian Kimball
  • Active region 12597 on Sept 26 by Brian Kimball

    • Read more about Active region 12597 on Sept 26 by Brian Kimball
  • Prominence 2 on Sept 26 by Brian Kimball

    • Read more about Prominence 2 on Sept 26 by Brian Kimball
  • Solar Eclipse Oct 23, 2014 by Bill Pellerin

     See related article, "What's the sunspot number?"   Image of the Sun showing at least 4 sunspot groups.

    • Read more about Solar Eclipse Oct 23, 2014 by Bill Pellerin
  • Cygnus in H-Alpha by Tally O'Donnell on Sept. 11

    Photo taken with a Hydrogen Alpha filter with Canon 6D with an 80mm lens.  It is comprised of 12 shots at 5 minutes at ISO 10000.  The two brighter stars are

    • Read more about Cygnus in H-Alpha by Tally O'Donnell on Sept. 11
  • Andromeda Galaxy on Sept. 4 by David Elmore

    Above image recorded at the University of Colorado Alpine Observatory Sunday night.
    • Read more about Andromeda Galaxy on Sept. 4 by David Elmore
  • Venus, Moon, and Jupiter on Sept. 2 by Damon Alcorn

    What a beautiful sight from our deck after the sunset on Sept. 2nd.  

    • Read more about Venus, Moon, and Jupiter on Sept. 2 by Damon Alcorn
  • M27 Dumbbell Nebula by Gary Garzone on Aug 27, 2016

    • Read more about M27 Dumbbell Nebula by Gary Garzone on Aug 27, 2016
  • Active solar region on Aug 21, 2016 by Brian Kimball

    • Read more about Active solar region on Aug 21, 2016 by Brian Kimball
  • Messier 15 by Gary Garzone on Aug 14, 2016

    • Read more about Messier 15 by Gary Garzone on Aug 14, 2016
  • Scorpius region by Tally O'Donnell on Aug 5, 2016

    • Read more about Scorpius region by Tally O'Donnell on Aug 5, 2016
  • M20, M21, & M8 by Tally O'Donnell on Jun 6, 2016

    • Read more about M20, M21, & M8 by Tally O'Donnell on Jun 6, 2016
  • Cynus by Tally O'Donnell on May 31, 2016

    • Read more about Cynus by Tally O'Donnell on May 31, 2016
  • Mercury transit by Brian Kimball on May 9, 2016

    • Read more about Mercury transit by Brian Kimball on May 9, 2016

Black Friday Sale on AstroCon 2017 Apparel!!!

  • Read more about Black Friday Sale on AstroCon 2017 Apparel!!!

Get Your Eclipse Glasses Now!

  • Read more about Get Your Eclipse Glasses Now!

What’s the Sunspot Number?

You might be surprised to find out that the ‘Sunspot number’ for any given day is not simply a count of the number of visible sunspots. As with many things in science, it’s not that simple.

  • Read more about What’s the Sunspot Number?

A new Astronomical League program! The Astronomical League/OPT Imaging Awards

  • Read more about A new Astronomical League program! The Astronomical League/OPT Imaging Awards

AAVSO salutes NYAA and Horkheimer Service Youth winners

  • Read more about AAVSO salutes NYAA and Horkheimer Service Youth winners

Astronomical League just gave away ten Library Telescopes!

  • Read more about Astronomical League just gave away ten Library Telescopes!

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