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Old 14-02-2024, 02:39 PM
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Nikolas (Nik)
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CG4 The hand of God update

Cometary Globule 4 (CG4)
Taken over three nights this very dim target called Cometary Globule four (CG4 ) and is located in the southern constellation Puppis. It is also known as the Hand Of God.
A very dim target it looks like a giant worm about to devour a galaxy called PGC 21338
Approximately 14 hours of acquisition each 15 minutes long
This has to be the most difficult target I have imaged so far. Bortle 6 skies
ZWO 294MC Pro
ASIAIR
TS_Optics 130 APO riccardi reducer 0.75
Optolong L-Ultimate
Skywatcher NEQ6 belt modded and guiding on average at 0.3-0.6 which for this scope and time was excellent.


Astrobin
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Old 14-02-2024, 03:30 PM
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Peter Ward
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I really like the deep and widefield treatment you have given this object.

But the colours are weird and there looks to be noise-reduction or processing artifacts that are masking fine detail (e.g ESO 257-19)

Quibbles aside, it's a striking rendition.
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Old 14-02-2024, 03:59 PM
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CoolhandJo (Paul)
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that excellent nick! It is a very good image technically given the faintness. Its sci fi Dune for sure!
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Old 14-02-2024, 06:11 PM
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Quote:
Originally Posted by Peter Ward View Post
I really like the deep and widefield treatment you have given this object.

But the colours are weird and there looks to be noise-reduction or processing artifacts that are masking fine detail (e.g ESO 257-19)

Quibbles aside, it's a striking rendition.
Thanks Peter,

Yes there is a bit of noise reduction as I think this needs twice the amount of data collected so far, the colours unfortunately are an issue with the dual band filter as it really ramps up the Ha. i can't seem to find a real colour in any of the renditions I have seen online they are all colour interpreted either magenta'd out or lacking in colour. I could barely capture the galaxy as it was.
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Old 14-02-2024, 06:20 PM
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Nikolas (Nik)
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Originally Posted by CoolhandJo View Post
that excellent nick! It is a very good image technically given the faintness. Its sci fi Dune for sure!
Cheers Paul it's a very difficult target from Melbourne.
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Old 14-02-2024, 09:56 PM
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Originally Posted by Nikolas View Post
...... i can't seem to find a real colour in any of the renditions I have seen online they are all colour interpreted either magenta'd out or lacking in colour. I could barely capture the galaxy as it was.
The Chart32 guys have nailed the colour quite well. Worth a look.
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Old 14-02-2024, 10:31 PM
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The Chart32 guys have nailed the colour quite well. Worth a look.
Have you got a link?
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Old 15-02-2024, 09:56 AM
Dave882 (David)
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Love it Nik. Great contrast and definition in the Ďhandí really makes it look like itís reaching out from the rest of the field. I donít think youíll get great detail in the galaxy using the L-Ultimate no matter how much hours you put into it, but perhaps a few dozen hrs of broadband may just do it
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Old 15-02-2024, 11:15 AM
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strongmanmike (Michael)
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Maybe a bit of crunchiness in the details and the noise work just a little obvious here and there but wow!.. it's a striking image, particularly the composition

Mike
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Old 15-02-2024, 12:11 PM
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Originally Posted by strongmanmike View Post
Maybe a bit of crunchiness in the details and the noise work just a little obvious here and there but wow!.. it's a striking image, particularly the composition

Mike
Cheers Mike
It does need more detail for sure
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Old 15-02-2024, 12:19 PM
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Dave I tried to take some broadband (3 hours)and got NOTHING it's too bright in the city.

I really need to do this in the country
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Old 15-02-2024, 12:24 PM
Startrek (Martin)
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Nik,
From your location using a OSC with dualband this is an awesome image mate
Iíve seen a few quality LRGB + Ha renditions of this target and yours is right up there
Definitely not an easy target

Well done indeed !!

Martin
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Old 15-02-2024, 02:55 PM
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Thanks MArtin
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