This result is a combination of 50 images, 20 seconds of exposure each, with camera SBIG ST-237, Newton 8′ and focal length of 1000mm.



film making – photography – education – astronomy
Abell 56 Star Field with no sign of the nebula at the center.
This is a composition of 55 images taken with a Newton 200mm f10 and CCD SBIG ST-237.
Aligned and stacked with Iris
The first image is from the US Naval Observatory’s archive, the second is a composition of three images of 20 second each, with a Newton Ziel Galazy2 8′ with SBIG ST-247 camera at f/5.
The star has a proper motion in RA of -1.15″ per year, really fast!

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This research has made use of the USNOFS Image and Catalogue Archive
operated by the United States Naval Observatory, Flagstaff Station
(http://www.nofs.navy.mil/data/fchpix/).
Details: Composition of 30 images, 10R/10B/10G, exposure of 20s for each image, f/5, focal 1M. Newton Ziel Galaxy2 8′ on mount HEQ5 Syscan with camera SBIG ST-237.
Original fit image:
Details: Sum of 10 images for each channel RGB with 20s for each image, f/5, focal 1M. Newton Ziel Galaxy2 8′ on HEQ5 Syscan with camera Sbig ST-236.
Original fit file: