Location of photoiran-abyaneh
Date/Time of photo6/17/2012-started @21:00
Equipmentscope:williamoptics FLT110DDG vs flattener4
mount:sky-watcher NEQ6 pro
guiding:orion starshoot autoguider on 70/700 refractor
camera:canon eos40D modified
exposure:12*6min total 72min @ iso800
DescriptionThe Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius. Its name means 'divided into three lobes'. The object is an unusual combination of an open cluster of stars, an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (the apparent 'gaps' within the emission nebula that cause the trifid appearance; these are also designated Barnard 85). Viewed through a small telescope, the Trifid Nebula is a bright and peculiar object, and is thus a perennial favorite of amateur astronomers.