M3 quick 'n dirty (Astrochromata)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 3 · NGC 5263 · NGC 5272

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M3 quick 'n dirty

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M3 quick 'n dirty

In my astronomy club (galileo-limburg.nl) we have a quarterly observation goal, which happens to be M3 for this season.

Although the equipment is not perfect for globs, I had a go at it anyhow and did all data in a couple of hours between dusk and moonrise.

I had to do extremely short subs to keep the stars from burning out:

1.4s for Luminance (150 subs)

5s for R, G and B (100 subs each)

bringing the total integration time to a little over 28 minutes.

Most of the imaging time was actally used for downloading and dithering.

In order to get some kind of resolution on this target I decided to go for drizzle integration, since the guiding graph suggested the seeing was good enough that night.

I used no flats for this target, since I did a heavy crop and M3 was centered on the sensor. Still I had some reflections to get rid of which I did by doing artificial flats with a PixInSight script I developed some time ago. If anybody wants to try out the script, just let me know and I am happy to share.

Please zoom in on the glob, there are actually quite a lot of stars visible, although not very bright.

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Status	Advanced success
Started	...
Astrometry.net job	4569970
PixInsight job	VJZPZ99KW5GZHACGKXQ8OXPK4RU7QSG6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h42m11s.700
RA (top/left)	13h40m41s.463
RA (top/right)	13h38m54s.182
RA (bottom/right)	13h43m41s.625
RA (bottom/left)	13h45m26s.421

Dec (center)	+28°22′34″.70
Dec (top/left)	+27°39′24″.76
Dec (top/right)	+28°42′15″.20
Dec (bottom/right)	+29°05′42″.11
Dec (bottom/left)	+28°02′37″.55

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M3 quick 'n dirty

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M3 quick 'n dirty

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