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Old 23-09-2017, 07:07 PM
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DiscoDuck (Paul)
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47Tuc newbie LRGB pic

Persevered through thin cloud on Thursday to get some LRGB data on 47 Tuc - was keen to play with my new ASI1600MM-C camera on a real target rather than mucking round indoors setting it up and/or doing brief tests between the clouds that the new purchase has caused (sorry!).

100 x 1 min of luminance and 20 x 3 mins each of RGB. Probably should've reduced the exposures about 30% or so (or taken some additional shorter ones) as the core is a bit saturated.

My first LRGB image, as have used an OSC up until now, so be kind!!

Comments appreciated.

Full res on Astrobin here.

Paul
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Last edited by DiscoDuck; 24-09-2017 at 09:31 AM.
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  #2  
Old 23-09-2017, 07:37 PM
Placidus (Mike and Trish)
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Excellent, Paul. The peripheral stars are pin-prick sharp. Letting the centre burn out is completely legitimate because it helps show the outermost stars without losing the signature super-bright, super-condensed core.

The colours are subtle but good. Very well done indeed!
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Old 23-09-2017, 09:30 PM
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Atmos (Colin)
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Very nicely resolved Paul, it looks great
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Old 24-09-2017, 05:32 PM
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DiscoDuck (Paul)
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Thanks Colin and Mike N Trish.
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Old 24-09-2017, 06:46 PM
DJT (David)
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Good start to mono Paul.

You can get away without L for globs by the way. Might be worth a go but it’s a great image as it is
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Old 24-09-2017, 07:58 PM
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RickS (Rick)
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A great first light for the camera, Paul.
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  #7  
Old 24-09-2017, 10:00 PM
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Ryderscope (Rodney)
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Good one Paul. I found with 47 Tuc that I needed to reduce the exposure to 30 seconds.
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  #8  
Old 25-09-2017, 12:09 AM
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strongmanmike (Michael)
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While some core seperation might be an added bonus, I do agree with M&T Paul.
A nice result

Mike
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Old 25-09-2017, 08:02 AM
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multiweb (Marc)
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Very nice resolution and sharpness. Beautifule fov and a nice glob.
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  #10  
Old 28-09-2017, 10:37 AM
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DiscoDuck (Paul)
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Thanks all.
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Old 28-09-2017, 07:36 PM
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rustigsmed (Russell)
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nice glob Paul!
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Old 29-09-2017, 10:52 PM
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DiscoDuck (Paul)
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Thanks Russell.
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Old 29-09-2017, 11:44 PM
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Shiraz (Ray)
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good stuff Paul - clean and clear.

If you want to get more dynamic range without drowning in short subs, you could try reducing the gain a bit - for this type of target you could try dropping the gain to maybe 50, which will give you ~5x the headroom before the stars saturate.
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Old 30-09-2017, 03:27 PM
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DiscoDuck (Paul)
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Thanks Ray. That's a useful option to remember in future.
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Old 30-09-2017, 08:50 PM
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atalas
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Nice sharp shot of an old favorite Paul
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  #16  
Old 30-09-2017, 09:26 PM
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DiscoDuck (Paul)
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Quote:
Originally Posted by atalas View Post
Nice sharp shot of an old favorite Paul
Thank you Louie.
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