Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
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M81 and M82, John Verderame
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M81 and M82

Getting plate-solving status, please wait...
M81 and M82, John Verderame
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M81 and M82

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Description

40 x 200-second subs @ ISO 3200.  This is the first I've ever imaged using that ISO.  Since the Nikon D810 (which I've had Ha moded) is ISO invariant, I've been experimenting and been very happy with the results.

I have also modified my guide scope using a 2x Barlow to double the focal length to around 400mm.  It has resulted in a big improvement in tracking for the 9.25" EdgeHD.

My next venture will be delving into off-axis guiding to see if that's an improvement.

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M81 and M82, John Verderame