Search found 1843 matches

by turfpit
Sun Jan 12, 2025 1:55 pm
Forum: Gallery
Topic: 4hr Jupiter Animation Using Live Planetary Stacking
Replies: 8
Views: 405

Re: 4hr Jupiter Animation Using Live Planetary Stacking

Richard

I appreciate what you have done there - my first scope was a 6SE.

Dave
by turfpit
Sat Jan 11, 2025 2:15 pm
Forum: Gallery
Topic: Double Cluster, Altair 183M with LRGB filters
Replies: 5
Views: 930

Re: Double Cluster, Altair 183M with LRGB filters

Tim Thanks for the comments. To address the "but ...." the teal appearance of so many of the stars in the lower cluster and the pinkish look to the stars in the upper? I think that the core cluster stars are all white I had a look around the internet, starting with some APODs https://apod....
by turfpit
Sun Jan 05, 2025 9:46 am
Forum: Gallery
Topic: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration
Replies: 10
Views: 693

Re: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration

Many thanks to Leandro & Brian for taking part in the project and to Robin for his comments.

Dave
by turfpit
Tue Dec 31, 2024 2:31 pm
Forum: Gallery
Topic: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration
Replies: 10
Views: 693

Re: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration

Robin

I tried the tool on my Double Cluster - not a good idea. It works well with the right sort of image - big nebula or narrowband.

Dave
by turfpit
Tue Dec 31, 2024 2:16 pm
Forum: Gallery
Topic: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration
Replies: 10
Views: 693

Re: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration

Thanks Robin. Higher res as requested. I see star reduction (useful in a narrowband image) but no loss of background nebula.
HOO_plus_RGB.jpg
HOO_plus_RGB.jpg (894.97 KiB) Viewed 392 times
1735569132-014882-83190951-73714879-denoise2-scaled.jpg
1735569132-014882-83190951-73714879-denoise2-scaled.jpg (747.27 KiB) Viewed 392 times

Dave
by turfpit
Tue Dec 31, 2024 10:05 am
Forum: Gallery
Topic: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration
Replies: 10
Views: 693

Re: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration

I came across https://www.starfixer.org/ on my internet travels. An AI application to fix star elongation, perform star reduction and denoise. Free of charge and easy to use. Top image is the original, bottom image is processed (took ~2m to process).

StarFixer.JPG
StarFixer.JPG (82.3 KiB) Viewed 406 times

Dave
by turfpit
Sun Dec 29, 2024 3:16 pm
Forum: Gallery
Topic: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration
Replies: 10
Views: 693

Re: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration

This is a 'no-stars' version of the above HOO_plus_RGB created with Starnet++
HOO_plus_RGB_nostars.jpg
HOO_plus_RGB_nostars.jpg (949.22 KiB) Viewed 566 times

Dave
by turfpit
Sun Dec 29, 2024 2:45 pm
Forum: Gallery
Topic: NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration
Replies: 10
Views: 693

NGC2070 - Tarantula Nebula, Argentine/US/UK collaboration

This post is the result of an Argentine/US/UK collaboration. Many thanks to Leandro (@leandro, Argentine) for capturing the data and to Brian (@oopfan, US) for developing the methodology to use Robin’s Sky Background Electron Rate Calculator with the Antlia Quad Band Filter. This image is a combinat...
by turfpit
Fri Dec 13, 2024 7:36 pm
Forum: Gallery
Topic: Double Cluster, Altair 183M with LRGB filters
Replies: 5
Views: 930

Re: Double Cluster, Altair 183M with LRGB filters

Thanks Robin. I set out with the intention to capture the best quality image in the least amount of time and by acquiring better quality data reduce the amount of post processing required. The colour calibration in PixInsight uses a locally stored 60Gb database. One step that wasn't required for the...
by turfpit
Thu Dec 12, 2024 9:31 pm
Forum: Gallery
Topic: Double Cluster, Altair 183M with LRGB filters
Replies: 5
Views: 930

Double Cluster, Altair 183M with LRGB filters

The Double Cluster, data captured 3rd October 2024 with a total integration time of 1h 6m. Minimum exposures for the LRGB filters were calculated using a combination of Sensor Analysis, Quantum Efficiency Curve for the IMX183M sensor, the Sky Background Calculator and the Minimum Exposure Formula us...