Amateur Telescope Makers of Boston

Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://www.atmob.org/gallery/showimage.php?id=3039
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Äàòà èíäåêñèðîâàíèÿ: Sun Apr 10 05:32:57 2016
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Submitted by Al Takeda on 09/25/2015 12:11:55

North America and the Pelican Nebula (Imaged during the Full Moon)

The North America (NGC 7000) and the Pelican Nebula (IC 5070) is an emission complex consisting of ionized hydrogen gas and dust. Located about 3 degrees east of the star Deneb, in the constellation of Cygnus, it subtends an area more than 3 degrees. Current estimates place the nebula's region at around 1,800 light years away. It is possible to see this cloud using the unaided eye under dark skies and using an ultra high contrast (UHC) filter. This series of images was acquired during the full moon.

7nm Narrowband Hydrogen-alpha filter: 12 images x 240-second sub frames, binned 1x1, Total= 48 minutes. AstroTech AT66, 66mm, f/5 ED Refractor using an AstroTech flat field corrector, SBIG STF-8300 monochrome CCD camera, Losmandy Gemini G-11 EQ mount. Image acquisition by CCD Soft V5. Processing by CCD Stack and Adobe Photoshop. ATMoB Clubhouse, Westford, MA, 31 July 2015.

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