Search found 61 matches

by szymon
Mon Sep 09, 2019 5:55 pm
Forum: Gallery
Topic: The Elephant's Trunk
Replies: 3
Views: 1644

The Elephant's Trunk

Exposure: • Total Exposure 2 hours 15 minutes • 7 x 300 seconds Ha • 20 x 300 seconds of Oii • 20 Flats corrected by 20 DarkFlats • 16 x 300 seconds Darks Hardware: • Altair Hypercam 183M • Celestron 80ED Telescope • IKHAROS 0.8x Reducer/Flattener • SkyWatcher Motor Focuser • HitecAstro DC Focus Con...
by szymon
Mon Sep 09, 2019 11:26 am
Forum: General Discussion
Topic: DSS setting
Replies: 9
Views: 2868

Re: DSS setting

ASTAP is multiplatform and there is a Windows binary here:

http://www.hnsky.org/astap.htm

At the very top click on the "ASTAP Installer" link under "MS Windows 64 bit" :-)
by szymon
Fri Sep 06, 2019 6:47 pm
Forum: Image Processing Troubleshooting
Topic: Can't seem to get the colours right
Replies: 14
Views: 5225

Re: Can't seem to get the colours right

A video would be awesome :-)
by szymon
Fri Sep 06, 2019 11:17 am
Forum: General Discussion
Topic: DSS setting
Replies: 9
Views: 2868

Re: DSS setting

I have completely stopped using DSS. I'm not sure if it's just because it's in a state of flux, but it seems completely incapable of correctly calibrating my images. I have now moved entirely to ASTAP (The Astrometic STAcking Program) for stacking -- you can get it for free from http://www.hnsky.org...
by szymon
Fri Sep 06, 2019 10:54 am
Forum: Image Processing Troubleshooting
Topic: Can't seem to get the colours right
Replies: 14
Views: 5225

Re: Can't seem to get the colours right

Oh wow. That's with my data? That's an incredibly beautiful image!

I really don't follow your processing steps, I think I'm going to have to go through slowly bit by bit and understand exactly what you did to make it look like that. Thank you so much for working with my data :-)
by szymon
Mon Sep 02, 2019 3:12 pm
Forum: General Discussion
Topic: Flats & noise propagation; who's up for an experiment?
Replies: 12
Views: 6355

Re: Flats & noise propagation; who's up for an experiment?

Oh, my apologies. I am using different stacking software (DSS was having horrible trouble with my calibration frames). So I moved to ASTAP a few days ago, and it's superb. One of the only real problems with it is that it didn't align frames for composition -- it can merge three separate frames into ...
by szymon
Mon Sep 02, 2019 3:08 pm
Forum: Image Processing Troubleshooting
Topic: Can't seem to get the colours right
Replies: 14
Views: 5225

Re: Can't seem to get the colours right

Magenta stars are a typical feature of a SHO image. Some people layer in RGB stars, others desaturate the stars, some just leave them in. A quick and easy way to desaturate them, is to put them into a mask, launch the Filter module, set Filter Mod to Fringe Killer and then keep clicking on any mage...
by szymon
Mon Sep 02, 2019 1:54 pm
Forum: Image Processing Troubleshooting
Topic: Can't seem to get the colours right
Replies: 14
Views: 5225

Re: Can't seem to get the colours right

Ok so that's "sort of" my problem. When I get the DSO looking right, the stars are all wrong -- and vice versa. In your example the stars are very red! I guess that kind of makes sense, because the image is made up out of the same colours being representing the Ha, Oiii and Sii channels, and there's...
by szymon
Sun Sep 01, 2019 4:51 pm
Forum: Image Processing Troubleshooting
Topic: Can't seem to get the colours right
Replies: 14
Views: 5225

Can't seem to get the colours right

Hi there, So I have some data -- there's not a lot of it, a total of 9x300s Ha and Oiii and 6x300s of Sii, but enough nebulosity visible for me to combine it in a hubble-esque pallet in other software. However I can't seem to get it right in StarTools! I like the framing of the two nebula and want t...