Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 3  ·  NGC 5272
M3, Trace
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M3

M3, Trace
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M3

Equipment

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Acquisition details

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Description

2nd Light on my new TPO 8" RC at native f/8 in Bortle 8 sky of my backyard. 1st light was of M53 but not worth publishing as I only captured 8 subs before clouds set in.

Although I like the new scope, not sure about what appears to be coma. Collimation only partly done, using a Cheshire...Laser collimator still on order.

I've got an AP CCDT67 reducer on order, and I wonder if the coma that appears in this M3 image will improve with the reducer.

Since I also want to shoot at native f/8 for some targets, I guess I'll need to look into a 1x field flattener. Anyone have recommendations for 1x FF for this scope?

19 flats @ ISO 800

20 flats @ ISO 1600 (not reported by Astrobin in the details above for some reason)

CS/Trace

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