M81  

Object Details:

  • Spiral Galaxy in Ursa Major

  •  RA:          09 hours 55 minutes

  •  Dec:         +69 degrees 04 minutes

  •  Distance: 4.5 Million Light years

  •  Size:          26.7' x 14.2'

  •  Mag:         7.9

Image Details:

  • Instrument:  Celestron 9.25 SCT Reduced 6.3@ f/6.3 (1481mm) focal length
  • Mount:         Celestron CG5
  • Camera:       Canon 300D 
  • Filters & Exposure Times:  
    • RGB    81 x 4 at ISO 400 
  • Total  exposure time: 5.4 hours
  • Software: Iris, Adobe Photoshop
  • Location: Saratoga California
  • Date: January  2007

 

              

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