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Atmos
19-05-2018, 09:41 AM
An open cluster in the constellation Scorpius. There are about 125 stars associated with this cluster. I was actually surprised at the lack of “blue” stars, most them have appeared to either be red or white so I’d assume it is may be 50-200 million years old?

Sky Rover 130mm F/5
Nikon D810
ASA DDM60

5x300s ISO 400

Link to Astrobin (https://www.astrobin.com/full/347431/0/)

Andy01
19-05-2018, 11:13 AM
Nice piece of Modern Art there Colin - looks great! :thumbsup:
Reminiscent of a John Coburn style painting. :painting:

willik
19-05-2018, 01:00 PM
Nice image Colin taken with your Sky Rover
Martin

atalas
19-05-2018, 07:54 PM
And I'm surprised It come up so well in 15 minutes!good work Col :thumbsup:

multiweb
19-05-2018, 08:45 PM
Very nice. My fav cluster. :thumbsup:

Placidus
19-05-2018, 10:34 PM
Superbly done. Lovely (and very meaningful) colour in the cluster stars.

I can see the point of placing it in context against the billions and billions, and against the dust from which they came, and I take your point that this particular cluster is not necessarily super-young and super-hot (where the OB cluster stars might be 10,000 times brighter than the background stars), but the cluster stars are still likely hundreds if not thousands of times brighter than the hoi polloi, so I should love to see a second rendition that is processed to show that, and strongly emphasises the cluster stars over the others.

Best,
Mike

Atmos
19-05-2018, 11:42 PM
There is quite a bit of noise reduction I've had to do so yeah, it does give that kinda painting look :lol:



Thanks Martin, I am happy with the way the Sky Rover performs with the D810.



Actually 25 minutes :P Still pretty noisy!



Thanks Marc. One night soon I'll have to get my binoviewers out and do some viewing of these Milky Way open clusters.



Thanks MnT, when I saw the bayered frames I figured there would be a lot more blue stars but as far as I can tell they're all white and red. I did use the Photometric Colour Calibration in PixInsight and although it makes it green biased in the background the star colours should be accurate.

I did darken the background and try to keep the bright stars bright and they've been ruined a bit hehe

Rework (https://www.astrobin.com/full/347431/B/)

RickS
21-05-2018, 09:39 PM
Nicely done, Colin!