Black Friday & Cyber Monday Sales on Renter's & Owner's licenses - sale will end on the 1st of December 2020 at 12:00 UTC
16 November 2020 - Wouter van Reeven has officially joined the Astro Pixel Processor Team as a moderator on our forum, welcome Wouter 🙂 !
30 July 2020 - APP 1.083-beta1 has been released introducing Comet processing! This 1st beta has comet registration. The stable release will also include special comet integration modes.
9 July 2020 - New and updated video tutorial using APP 1.081: Complete LRGB Tutorial of NGC292, The Small Magellanic Cloud by Christian Sasse (iTelescope.net) and Mabula Haverkamp
2019 September: Astro Pixel Processor and iTelescope.net celebrate a new Partnership!
Trying to combine RGB
Apologies to start, complete newbie. So stacked a set of Lights, darks, flats, dark frames from an OSC, using a Quadband filter. Did two separate stacks, one with Ha extracted, one with OIII extracted. Saved both as TIFF. Then loaded both TIFFs back in using Combine RGB. Won’t let me combine as the original stacked them as 2 different sizes 😕. Went into photoshop and resized one, tried again but because PS ‘resamples’ to the new size, all the stars are screwed up as it doesn’t align properly. What am I doing wrong or missing ?
No problem being a newbie and I wouldn't say you are as you're already into narrowband extraction etc. 😉 You do the OIII extraction and process that result, then save it as fits. Same for Ha. Then you restart APP (or clear the data) and load in Ha and OIII and label them as such (multi filter processing) and go to the normalize tab (5) and normalize the light against each other. Then you click on "save normalized frames" and then you can nicely combine them.
If you run into an issue, happy to help. Good luck!