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Old 07-02-2021, 08:28 PM
Startrek (Martin)
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Location: Sydney and South Coast NSW
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Carina with the 2600MC

Conditions were really good last night in Sydney after that huge low pushed through during the day. All the cloud cleared off by 6.00pm leaving a pristine clear night until morning , no wind, no dew , no moon and no mozzies
First time capturing the Carina Nebula using my 2600MC ( capture this object many times before with the old DSLR)
6” f6 Bintel newt
EQ6-R mount
ZWOASI2600MC camera Ascom controlled set to highest dynamic range ( Gain 0 ) cooled to -12C
Goto and navigation EQMOD and Ascom Stellarium
Frame focus and capture APT
42 x 3 minute dithered guided subs
20 x darks
PHD2 guiding 0.85 to 1.00 arc sec error
Stacked in DSS capper sigma clipping
Processed in Startools V1.6 Linear OSC data set
Image has “Tilt” affected star field as I used my new Baader coma corrector and forgot to install a shim on one side like my previous one

LRGB version
Synthetic Luminance version
Crop versions to explore more detail

Comments most welcome
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  #2  
Old 07-02-2021, 08:42 PM
jahnpahwa (JP)
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I think that central crop is one of the best I've seen of that area, Martin! Well done.
I wonder, if you did grab a crop in startools, can you then re-finish and try to pull more contrast out of the brighter areas? For example, I reckon if you focussed just on mystic mountain there, you'd be able to show quite a bit more detail, tweaking contrast etc? Only if you're interested, of course I'd love to see it!
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Old 07-02-2021, 09:11 PM
RyanJones
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I’d love to see the high res version of the central crop. You can just about make out the bulbs on either side of Eta. Very nice.

Cheers

Ryan
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Old 08-02-2021, 08:30 AM
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aiming for 2nd Halley's

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The eta Carina nebula is easily my favourite DSO followed by the Tarantula. It's amazing how much depth you can get with relatively short exposures and here that depth is well illustrated with your ASI2600... amazing how croppablle images with this sensor can be. Nice work Martin.
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Old 08-02-2021, 11:20 AM
Startrek (Martin)
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JP
Thanks a very humbling comment
I am disappointed about the stars but hopefully will be sorted next time out
As far as Cropping in Startools goes you are changing the aspect and therefore reducing the number of pixels in the frame so you would think that resolution would suffer. I might do a reprocess and see if a heavy crop then process is better than a post crop

Ryan
Thanks mate , yes some good detail in there around Eta

Robert
It’s a tremendous nebula but I prefer the Lagoon over Carina as there’s more contrast between the central and outer areas. Carina the deep backgrounds tends to be a bit too concentrated or busy to expose the neb clouds , in the Lagoon I can contrast it much easier
Yes the 2600MC is a fantastic camera, a joy to use and the results show for themselves
Thanks again

Martin
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