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The after-mid-eclipse slide!

Citizen Sky is now officially permanent part of the AAVSO. In the coming weeks we will be moving additional content to the AAVSO site and freezing this site as an archive of the 1st three years of the project. Please visit the new landing page for future updates.

Posted by Dr.Bob on August 8, 2010 - 12:48am

Although we won't be able to confirm until later, that mid-eclipse occurred as predicted during the end of July - beginning of August, all the evidence strongly suggests it's so. 

  • Despite solar conjunction at the start of summer, photometric monitoring continued, but little evidence for Mid-Eclipse Brightening has been produced thus far.  In fact, a first minimum during totality was reached near RJD 55250 (V ~ 3.8), then slowly rising toward mid-eclipse values close to V ~ 3.6

    If the trends seen in the 1929 (Gussow, 1936) and 1955 (Gyldenkerne, 1970) eclipses hold true, we can expect another decline toward/past V ~3.8 over the next 200 days prior to egress.  Fortunately, as epsilon Aurigae rises higher in the pre-dawn sky, more observations become possible, allowing this to be the best documented second half of totality ever.  Keep reporting your observations right here.  Thanks for your help!

    Augmentation, 5 Spet 2010:
    Just completed a wonderful several day Second Citizen Sky workshop, featuring updates and tutorials on results and methods and project and spectacular Morrison Planetarium shows at the California Academy of Science in the middle of Golden Gate Park, San Francisco.  Watch for Citizen Sky news at the next couple of AAS meetings and the AAVSO 100th anniversary meeting next year October.
     

I have always find myself

I have always find myself happy whenever there is an eclipse. Actually, I don't know if the lunar eclipse and the Twilight Eclipse premiere was just a coincidence but It was really extraordinary. It never happened before and this one seems to be a mystery on me.

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