Object Details:

• Spiral Galaxy in Ursa Major

•  RA:          9 hours 56 minutes

•  Dec:         +69 degrees 21 minutes

•  Distance: 4.5 and 17 million Light years

•  Size:         25'.7 x 14'.1 and 11'.2 x 4'.6

•  Mag:        6.9 and  8.4

Image Details:

• Instrument:  Williams Optics 110mm and Celestron 9.25 SCT @ f/6.3 (1481mm) focal length
• Mount:         Losmandy G11
• Camera:       SBIG ST-2000XM with CFW8 Color Filter 
• Filters & Exposure Times: 

                       110mm M81 M81                                             9.25SCT  M81                          9.25SCT M82

  • R:      24 x 5 minutes binned  1 x 1                         24 x 5 minutes binned  1 x 1  
    G:      24 x 5 minutes binned  1 x 1                         24 x 5 minutes binned  1 x 1  
    B:      24 x 5 minutes binned   1 x 1                        24 x 5 minutes binned  1 x 1  
  • Ha:                                                                                                                                 36 x 10 minutes binned  1 x 1  
• Total  exposure time: 18 hours
• Software: CCDStack, Adobe Photoshop
• Location: Saratoga California
• Date: April  2009 and (2008 for Ha)

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