Search found 520 matches

by timh
Mon May 06, 2024 8:24 pm
Forum: Bug Reports
Topic: Problem with livestacks - dark subtraction - in EEA
Replies: 14
Views: 372

Re: Problem with livestacks - dark subtraction - in EEA

Thanks Robin. I also like that option. Borodog's comment is true of e.g. PI post-processing which seems to get rid of the hot pixels - i.e. following calibration with the flat and dark, the cosmetic correction process is set to remove hot pixel outliers at various levels of significance with a slide...
by timh
Mon May 06, 2024 1:38 pm
Forum: Bug Reports
Topic: Problem with livestacks - dark subtraction - in EEA
Replies: 14
Views: 372

Re: Problem with livestacks - dark subtraction - in EEA

Hi Robin, Thanks. Maybe it all is indeed to do with some idiosyncrasy of the chip? Just to note that the problems is only apparent while I am viewing live in EEA mode - generally I also concurrently save the stacked raw light files and then calibrate, debayer and integrate them afterwards using exac...
by timh
Sun May 05, 2024 5:45 pm
Forum: Bug Reports
Topic: Problem with livestacks - dark subtraction - in EEA
Replies: 14
Views: 372

Re: Problem with livestacks - dark subtraction - in EEA

Just to confirm that I am using an ASI294MC camera -- re suggestion over on CN that there might be an issue around that particular sensor returning out of range values for some pixels?
by timh
Sat May 04, 2024 11:37 pm
Forum: Bug Reports
Topic: Problem with livestacks - dark subtraction - in EEA
Replies: 14
Views: 372

Problem with livestacks - dark subtraction - in EEA

Hi Robin, I was running SC 4.1 (latest version) livestacking for EEA observations of some galaxies - with the appropriate darks and flats. At the same time also dithering, guiding and saving the stacked lights for later processing. It worked well - after 60 min I had a nice image of NGC4449 up on th...
by timh
Fri May 03, 2024 9:57 pm
Forum: Gallery
Topic: M42 chronicles
Replies: 50
Views: 27680

Re: M42 chronicles

Dave, Thanks for all the processing details. If I do anything good enough in the next few weeks I'll record the same - there are just so many alternatives now. I like the whole concept of keeping a chronicle of some object or another because it is easy to lose sight of just how far and how rapidly t...
by timh
Sun Feb 25, 2024 10:13 pm
Forum: Gallery
Topic: NGC 7129 in NIRGB, NIR and RGB
Replies: 6
Views: 7515

Re: NGC 7129 in NIRGB, NIR and RGB

Hi Menno. A very late additional comment. Just thinking about the significance of the lack of (~ 800-900 nm ?) NIR from these HH objects and reflecting that it probably particularly makes sense for an HH object ? Well at least if I understand the attached publication correctly - which I may not of c...
by timh
Sun Feb 25, 2024 9:23 pm
Forum: Gallery
Topic: Plato (processed with waveSharp)
Replies: 2
Views: 844

Re: Plato (processed with waveSharp)

Again very nice Dave --sharp but also remaining realistic looking and not overcooked- The methods you provide serves as a great guide to what to do. I have saved a file with links to your posts as a reminder of settings and to get the waveSharp software I am away from imaging again for about a month...
by timh
Tue Feb 20, 2024 10:19 am
Forum: Gallery
Topic: Aristoteles & Eudoxus 2-panel mosaic
Replies: 4
Views: 1920

Re: Aristoteles & Eudoxus 2-panel mosaic

Thanks Dave, very useful account of exactly what to do and I will give it a serious go with the 12 inch Newt one of these nights. I was interested in thinking through the whole question of what aperture, focal length etc should really work best for lunar/ planetary imaging and came across this threa...
by timh
Fri Feb 16, 2024 10:56 pm
Forum: Gallery
Topic: Aristoteles & Eudoxus 2-panel mosaic
Replies: 4
Views: 1920

Re: Aristoteles & Eudoxus 2-panel mosaic

Superb Dave. Just catching up with stuff I missed. Wavesharp looks interesting
by timh
Thu Feb 15, 2024 7:34 pm
Forum: Live Stacking
Topic: Issues with short exposures and flats
Replies: 19
Views: 1967

Re: Issues with short exposures and flats

I had a similar effect some time ago that turned out to be due to the offset (brightness) value at which the darks were taken not being exactly the same as for the lights -- so another possibility perhaps?


Scrub that ..just noticed brightness was the same :-)