Astrophotography Gallery (by Igor Chekalin)
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Cygnus constellation's H-alpha mosaic
(NGC7000 North America, IC 5070 Pelican, IC1318 - The Butterfly, NGC6888 Crescent  and many other nebulaes)

<High Resolution Without stars (1594x1068, 0.9Mb)>

<High Resolution With stars (1594x1068 0.7Mb)>

Optics  Nikkor ED 180/2.8 lens @ F2.8
Exposure Details 4 frames Mosaic, 20+20+23+20 images by 5 min. exposures, ISO1600 (total exposition ~7 hours)
Mount EQ6 PRO SynScan
Camera/Guider Canon 350D (modified with Baader IR-cut filter.), Guider camera is QHY6 CCD.
Filter Astrodon 6nm H-alpha filter
Date April 2008
Location In the center of town (300k population). 

2000-2008 All images, text and software are copyright Igor Chekalin