The Crescent Nebula - NGC6888

 Astrophotography details:

Film Hypered Agfachrome RSX 100
Telescope/camera Meade LX-200 10"
F-ratio F/10 (Prime focus)
Exposure time 3.75 hours
AutoGuider Meade Pictor 201-XT
Autoguider exposure time 7 seconds
guide star GSC 3151:2947, Mag 12.5, (not absolutely certain in this case however)
Date of Photo 2342 Hours local, 4 July 97
Location Dark site within the White Mountains at the 9200 foot elevation level.
Additional image processing This represents my fourth or fifth attempt on this object. I consider this object to be rather difficult and was very pleased this time with the results. There was absolutely no light pollution at the chosen site. It should be noted that the scanning process seemed to bring out more blue in the background stars than is evident when viewing the slide. The slide shows excellent contrast between the dark sky and the Crescent Nebula. The digitized version approaches the contrast level of the slide although it is hard to beat a slide.
Posted  July 97