Official StarTools support forum

Finalized my January horsey, still the last astro data I've managed to capture this year. :( I'm sure it looks pretty much just like all the others. ;) But, I appreciated applying 565 and the new OptiDev to it. The stars are so much happier, deringing can just be deringing, and no weird hoops to jum...

Oh, just visual star core stuff rather than deep star core stretching theory? ;) 500 may be a little high if there are few bright stars to be had, though broadband on my Horsehead region was probably pushing 1,000 max pixels per sub. I guess sacrificing stars with gain (or longer exposures) could sp...

Hi Mike @Mike in Rancho please use with caution - I found a problem. As I wrote, when applying a global stretch, each brightness mapping should be unique. But it isn't. I just implemented a check. I should have done earlier. :( :oops: The differences are quite large, for example: 13412 - 12870 1341...

Cool, Dietmar! Indeed, forget all this stuff and enjoy a nice Easter weekend. Everyone should. It'll still be here later. :D I took a quick peek at the project -- all Greek to me. :lol: Guess I need to go back to school. And look at the specs for that dll, since I'm guessing that sets up the TIFF ca...

Hi Dietmar, Cool! But, problem with the app, or problem with our understanding what is going on? Or both ;) If you want to DM a link I suppose I could review the project. Maybe? I have VS 2022, not sure if that's what it is in. There was one time I traced and debugged a critical project, and my empl...

Hey Dietmar, Thanks for the remedial histogram lession. :thumbsup: I think I was confusing the input/output mapping line with the tally-up pixels at all the brightness levels line. :oops: I for sure wouldn't mind trying out the reader app to then make some graphs in a spreadsheet. Maybe try to get a...

Yeah I think that makes sense, Ron. Though Dietmar I'm still interested in your app and wanting to know what the X and Y axes represent! I chewed on it some, and even (sorry Dietmar!) created a little synthetic image of 10 increasing brightness bars in Gimp from black to white, and then played aroun...

Hi Dietmar, A for effort once again! But, I need some help understanding what we are looking at. :think: You said there's a comparison of pixel mapping per file, resulting in....? :confusion-shrug: The first sample shows two lines, both post stretch. How are we seeing the differences applied to pixe...

I am no mosaic expert, having only done a couple. They seem inherently difficult, trying to get so many things to match across the panels from gradients, to color balance, to the non-linear stretching. True even if stitching linear rather than all post-processed. But, so many different ways to go ab...

Thanks again, Ivo! An interesting discussion and of course upgrade, though I admit I am still trying to wrap my head around things. :? I will keep reading and thinking though. And cool background on OptiDev. So it's scoring likely activity to determine how to curve things. Kind of explains why we ca...