Abell 21 Medusa Nebula





IMAGE INFORMATION OBJECT INFORMATION
Telescope Epsilon 160 on AP900GTO Designation Abell 21
Focal Length F/3.3 525mm Position RA 7h 29m DEC +13* 14'
Guiding internal guide chip Type Planetary Nebula
Control MaximDL Magnitude 15
CCD Camera Sbig ST2000XM Size 10 arcminutes
Image Scale 2.89 arcsec Distance 1000 light years
Filters Baader RGB Constellation Gemini
Exposures 12 x 5min Lum 1x1, 8 x 4min ea RGB 2x2 Image  
Calibration Flats, Bias, darks    
Software MaximDL    
Date Winter Star Party Feb 2010