Old 16-06-2024, 07:23 PM
PaulSthcoast (Paul)
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PaulSthcoast is offline
Join Date: Feb 2019
Location: Ulladulla NSW
Posts: 298
Cats Paw

Details as follows:
Hi everyone,

Another target from 12.06.24

Cats paw.

Details as follows:

William Optics Zenithstar 81mm
.08 reducer flattener
Zwo 1600mc no cooling
(ambient camera temperature was -3.6)
IDAS LPS2 filter
30 x 120 seconds unguided
Sywatcher azgti

Stacked via asi air.
Processed in Snapseed.

Thanks for looking.

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Old 18-06-2024, 10:51 AM
Startrek (Martin)
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Startrek is offline
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,163
Hi Paul,
Great to see you busy imaging again
Some nice popular emission nebula in and around Sagittarius, Scorpius and Carina
Really nice image of Carina !
Well done !!
Just a quick one and suggestion , any reason why you’re using a dedicated light pollution filter under your B2/3 dark skies and no moon around ??
These IDAS LP2 filters are generally designed and used for severe light polluted locations ( B6 to B9 ) with OSC, eg : my Sydney B8 location.
Might be worthwhile seeing what no filter at all produces !!
If you do have a street light nearby , might be better to shield it with a tarp or similar and use no filter , you will definitely bring out more detail and colour in the nebula and star field too.
That filter won’t reduce your read noise , shot noise or thermal noise which is mitigated by dithering , calibration and more stacked subs. The filter will just minimise a tiny bit of gradient under your lovely dark skies )
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