Last updated on 10/26/2014


Object Sh2-90 Emission nebula in Vulpecula (and Sh2-89)
Date July 21-25, 2011
Exposure HαRGB 240:25:25:25 (Hα+Red 50/50; cropped)
Camera STL11000M with Astronomik filters (water assisted cooling -10�C)
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Very warm and humid; moderate seeing