NGC1788: NGC1788 is an isolated molecular cloud, containing both reflection (blue) and emission (dull reddish) components, visually within the constellation Orion, close to the "Witch Head Nebula"; it is shaped by stellar winds from some of Orion's brighter stars. Star formation apparently is taking place within the nebula. NGC1788 is about 1300 light years away from us; it measures about 0.3 light years across..

Technical Information:

LRGB: 510:150:150:150; All channels are the integration of 15-minute exposures through Astrodon generation 2 filters. All images unbinned.

Equipment: 14.5" RCOS at about f/9, and an SBIG STL-11000M with internal filter wheel (Astrodon generation 2 filter set), guided by a MOAG/AO-L combination, all riding on a Bisque Paramount ME German Equatorial Mount.

Image Acquisition/Camera Control: Maxim DL, controlled with ACP, working in concert with TheSky v6.

Processing: All images calibrated (darks and dawn flats), aligned, combined and deconvolved (data used in the luminance layer only) in Pixinsight. Color combine in Pixinsight. Finish work (curves and levels, adjustment of contrast, High Pass Filter/Layer Mask, and some sharpening of the luminance layer) was done in Photoshop CS5.

Location: Data acquired remotely from Fair Dinkum Skies, Moorook, South Australia.

Date: Images taken on many nights in November and December of 2014. Image posted January 16, 2015.

CCD Chip temperature: -5C

Copyright 2014, 2015 Mark de Regt

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