Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5422  ·  NGC 5457  ·  NGC 5473  ·  NGC 5474  ·  NGC 5477  ·  The star 74Cyg
M101 - 4.5 hours with AT115EDT, nickatnight
M101 - 4.5 hours with AT115EDT
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M101 - 4.5 hours with AT115EDT

M101 - 4.5 hours with AT115EDT, nickatnight
M101 - 4.5 hours with AT115EDT
Powered byPixInsight

M101 - 4.5 hours with AT115EDT

Equipment

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Description

I shot this last Saturday and Sunday night from my backyard in the suburbs. Total time is 4 hours and 35 minutes of 5 minute exposures with the modded Canon T3i @ iso1600 through the AT115EDT with .80 focal reducer, guided with 50mm guide scope and PhD Autoguider, all on a SkyWatcher EQ6. Processed with PixInsight, StarTools and Photoshop. Used 50x darks, 30x flats and bias. I manually dithered every 4-5 shots, so noise wasn't too bad. It was nice and even at least. This is just about the full field captured, with just the rough edges being cropped off.

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M101 - 4.5 hours with AT115EDT, nickatnight