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ASTRO: wide-field centered on Scutum star cloud
Image with Canon Rebel DSLR and Tamaron 28-200mm lens on an Orion EQ-1
mount. A five minute exposure taken at Indian Lake NY on Aug 13, 2006. West is at the top and the area starts at the left with northern Sagittarius and runs right (north) thru Scutum, and Serpens Cauda into southern Aquila. If anyone is considering getting one of these cameras for similar imaging, note that the original full resolution images are notabley better than this compressed version. The 'advantage' of this set-up over a 'normal' astro CCD camera is no need for PC (while imaging) and both the camera and mount work on small batteries and you can carry the whole rig in one hand. The other advantage is cost. Of course a CCD camera and small APO on a high quality mount will give better results, but at more cost and more difficulty in taking to a remote wilderness location. For example taking this image required that I walk a short but steep and rugged trail to get to the observing area. (When the bears show up in involves *running* on the trail!!) George N |
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