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Дата индексирования: Sun Apr 10 06:00:34 2016
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Поисковые слова: active galaxy
Amateur Telescope Makers of Boston

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Submitted by Gary Phillips on 11/17/2014 19:28:52

M31 Andromedia, 14Nov14, Northboro, MA

MY FIRST PUBLISHABLE DEEP SKY IMAGE!!  Shot using my photography gear, Canon 5D mark ii, internal CLS filter, 7000K in camera white balance, 70-200mm f.2.8 lens + 1.4 extender, shot at 280mm focal length, ISO 1600, f/5.6, 50 seconds each x 114 images (95 minute total exposure).  Celestron Advanced GT equatorial mount with poor alignment b/c I was rushed and don't know what I am doing yet.  The only notable post processing was that I added 100% clarity to the stacked Nebulosity tiff image before doing my thing in Photoshop.  :)  I get excessive aberration when I shoot wide open, so I stopped down from f/4.0 to f/5.6 in these initial attempts.



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