The Trifid Nebula - M20

Astrophotography details:

Film Hypered Ektachrome 400
Telescope/camera Meade LX-200 10"
F-ratio F/10 (Prime Focus)
Exposure time 90 minutes
AutoGuider Meade Pictor 201-XT
Autoguider exposure time 7 seconds
guide star SAO 186191
Date of Photo 0300 Hours local, 27 April 96
Location A dark site 30 miles east of Tempe, Arizona
Additional image processing Applied Paint Shop Pro Unsharp Mask to improve contrast on 25 Oct 98 
Posted  7 June 97, updated 25 Oct 98