Search found 61 matches

by szymon
Fri Aug 30, 2019 8:18 am
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?

Hi Ivo, I'm not sure whether you're still interested in this data, but I have been concentrating recently on learning to collect clean data and good calibration frames and stacking properly, and I thought you might be interested this one set of stacks where I accidentally forgot to add flat frames ;...
by szymon
Tue Aug 27, 2019 1:55 pm
Forum: Software Troubleshooting
Topic: Save as 16bit greyscale tiff
Replies: 3
Views: 2091

Re: Save as 16bit greyscale tiff

admin wrote:StarTools' TIFF output is indeed always RGB no matter the color saturation. I wouldn't think that'd be an issue in DSS though?
DSS refuses to stack a 16bit Gray light against an RGB flat. I guess I could use StarTools and then convert somehow to Grayscale in say Gimp?
by szymon
Mon Aug 26, 2019 12:56 pm
Forum: Software Troubleshooting
Topic: Save as 16bit greyscale tiff
Replies: 3
Views: 2091

Save as 16bit greyscale tiff

Help! So, I messed up when collecting data yesterday. I have a luminance stack which is binned 1x1, and Ha and Oiii stacks binned 2x2. Unfortunately, all of my my flats and darkflats are binned 1x1 -- I made a mistake in configuration, and forgot to bin the flats for the Ha and Oiii filters as 2x2. ...
by szymon
Sun Aug 25, 2019 5:57 pm
Forum: Gallery
Topic: Crescent Nebula NGC6888
Replies: 0
Views: 884

Crescent Nebula NGC6888

Here is a photograph of the night sky that I took last night. The object in the centre is known as NGC6888, its name is the Crescent Nebula. The photo was taken from my home in Light-Polluted London. Exposure: • Total Exposure 1 hour • 15 x 120 seconds each of Ha, Oiii • 50 Flats through CLS filter ...
by szymon
Sat Aug 24, 2019 3:32 pm
Forum: Image Processing Troubleshooting
Topic: The way to M31
Replies: 13
Views: 4987

Re: The way to M31

Hi, I would also move the log file to a new name and let StarTools create a new one so to have a lighter file to examine. If you chose a naming convention you can archive your log files, this would let you retrieve the steps you performed for each image. This makes me think that it would be nice to...
by szymon
Tue Aug 06, 2019 8:35 pm
Forum: Image Processing Troubleshooting
Topic: Milky Way Processing
Replies: 6
Views: 2455

Re: Milky Way Processing

That’s brilliant! Less is clearly more. Thank you for the explanation!
by szymon
Mon Aug 05, 2019 10:52 pm
Forum: Image Processing Troubleshooting
Topic: Milky Way Processing
Replies: 6
Views: 2455

Re: Milky Way Processing

Sorry, I meant to add the log of what I did. ----------------------------------------------------------- StarTools 1.5.358 Mon Aug 05 05:38:32 2019 ----------------------------------------------------------- File loaded [C:\Users\szymon\Desktop\SharpCap Captures\Autosave002.fts]. Image size is 5496 ...
by szymon
Mon Aug 05, 2019 10:39 pm
Forum: Image Processing Troubleshooting
Topic: Milky Way Processing
Replies: 6
Views: 2455

Milky Way Processing

I'm currently on holiday, and most of the places we've visited so far have either had no night-time (Iceland -- there was seriously no darkness at all, not just no astronomical darkness but no actual darkness!), or have been bortle 9 light polluted (big cities like Boston, Halifax, Quebec City, Mont...
by szymon
Tue Jul 23, 2019 7:37 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?

My apologies for the radio silence. We left for our summer holiday on Friday evening, and it turns out I've had no time to do anything at all over the past four days, as we've been visiting Iceland. There was really fast internet in the hotels we stayed in (my son ran a speedtest and got synchronous...
by szymon
Thu Jul 18, 2019 1:55 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?

Aha! Yes, that makes sense, and yes I'm new to StarTools and tracking :-). The idea sounds good! When I get some time this evening, I will do my best to process the stacks correctly, and then I will upload what's needed. I'll also put the raw files out there in case you want to play with stacking th...