Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 3  ·  NGC 5272
M 3 Cluster, Michael Timm
M 3 Cluster
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M 3 Cluster

M 3 Cluster, Michael Timm
M 3 Cluster
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M 3 Cluster

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Description

Moon is near full these days, so there are only star clusters available for OSC-owners like me. I revisited M3 and i am happy with the result. Guiding was not good, but not bad either, seeing was incredible good.

This evening i first used my new SQM-L to measure background illumination of the sky. During imaging i made three runs of three measurements each. Results where: 19.3, 19.1 and 18.9, which combines to a total of 19.1. This is somewhere between bortle 5 and 6 i think, which is okay for a moon that bright. I am curious what further measurements especially without moon will show...

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