NGC 6559, IC 1274 and IC 4685 by Marcus Davies (marc4darkskies)

Marcus Davies (marc4darkskies) | all galleries >> bellsobservatory >> photography >> Nebulae > NGC 6559, IC 1274 and IC 4685

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08-Sep-2009	Marcus Davies

NGC 6559, IC 1274 and IC 4685

This region lies in the constellation of Sagittarius around 5,800 light years away. It has a bit of everything. It's embedded within the rich star fields of Sagittarius and contains dark, emission (red / pink) and reflection (blue) nebulae. The area encircled by the dark lane contains at least 7 catalogued objects - IC 1274, IC 4685 (the large reddish nebula above center), NGC 6559, GN 18.06.6.01, Barnard 303, Barnard 91 and IC 1275. The two brightest reflection nebulae are NGC 6559 (to the right - south) and IC 1274 (to the left - north).

This is an (L+Ls)RGB image (150+90, 90, 90, 90 minutes). Total of 7 hrs of data. LRGB subs were 15 mins in duration. All channels unbinned.
Note: I used synthetic Luminance (Ls = desaturated RGB) to augment the raw luminance data.
FOV is 1.57 x 1.13 degrees @ 1.67 arcsec/pixel.

It was taken with a Takahashi TOA-150 refractor @ F7.3 (FL=1095mm) on a Takahashi EM-400, SBIG STL 11000M camera and Takahashi 67 flattener.
See: http://www.pbase.com/gailmarc/image/115454701/large full exif

other sizes: small medium large original auto

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