Abel 21 (Medusa Nebula) ,  a supernova remnant in Gemini


Date  3rd February 2007
Time  2017 UT
Exposures  104m H-Alpha
Camera  Starlight Express SXVR-H814
Telescope  200mm Newtonian @F4.6 
Binning  1x1 
Image Scale  1,4"/pixel
Filters  H-Alpha
Location  Didcot, England

Right Ascension  07h 29m
Declination  +13 14'
Visual Brightness  7.7 m
Apparent Dimension  10'
 CentralStar  16 m
   
  Constellation Gemini