Astro Pixel Processor Forum - Recent Topics

Combining "yesterdays" RGB images LRGB

Georg Nikolaus Nyman — Sun, 05 Apr 2026 13:48:10 +0000

I seem to have a total blackout....no idea what to do now. I processed yesterday raw files and ended up with L,R,G and B of course. Saved them and wanted to continue to get a final LRGB image. OK so far so good - loaded those four stacks and switched to "tools" and selected LRGB1. Now loading started and I was asked during loading what color I want to asign to Ch1, then Ch2, then Ch3 - because the stacked files are RGB. Now what to do, please? I have not idea, it is the first time that I want to contine working a day later..
Please help me and let me know what I need to do now..!

Thanks

Georg

White balance doesn't work for ASI585MC

Skye Goodrich — Sat, 04 Apr 2026 14:30:52 +0000

I've computed the correct RGB white balance offsets for ASI585MC, and they work in GIMP but they do not work in APP: These amounts should produce a balanced image, and do in other software but not in APP. Please allow these RGB multiplier to work to set the white balance (its says custom white balance), and to save as presets per camera.

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Today is the day then for version 2 beta 40 😀

Stewart William — Sat, 04 Apr 2026 08:19:01 +0000

I guess today is the day for the new version 2, beta 40 release, as it’s 7 days after the 28th 🥳🥳

Allow specific values for RGB Multipliers not just Sliders (on 0 Color Settings) and saving Presets

Skye Goodrich — Sat, 28 Mar 2026 23:14:53 +0000

Allow specific values to be entered for RGB Multipliers not just Sliders (on 0 Color Settings), and saving Presets, so I can save a Preset (R/G/B) white balance per Color Camera (not just DSLR). Many graphics software permit saving of white balance presets for the purpose.

APP won't remember the Integrate Percentage Slider

Skye Goodrich — Sat, 21 Mar 2026 13:46:04 +0000

Although most settings are stored between sessions, APP won't remember the integration percentage "lights to stack" such as if I set it on 90% one session, it forgets and goes back 100%. Suggest have it remember what I set last time.

what reasons can it have when integrating sony a7rv subs with astropixelprocessor that the stack show a lot of artefacts when a single sub does not, especially when the light pollution gradient is removed?

elgol — Thu, 19 Mar 2026 18:36:43 +0000

Hello,

been using APP with Nikon and ASI Zwo mono for a while, trying out a Sony a7rV

one subs looks like this after lightpollution:

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but doing a normal stack as usual, I kepp getting strange pattern when applying LP substraction:

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any idea why? One subs is 30s, the stack 1 hour total

does APP apply LP too strong? Even if so these paatern should not appear. IN the single subs there is nothing

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Help - integrated images all blank - Why?

Charles Thody — Thu, 19 Mar 2026 10:30:58 +0000

Hi. have been using APP for a long time and never had any trouble until today. Loaded 54 FITS of M64 and used the normal settings I've used all along. Master calibrations files all assign themselves etc but when it come to integration there is suddenly nothing. So have tried a trial with other data files I have that have worked before - nothing. APP reports Integration 1 has ISO/gain of 0.000 and the screen is just black.
Any ideas will be greatly appreciated as this has me totally baffled. Thanks.

ToupTek 585 Color, one session o.k., the next is green ?

Werner Stumpferl — Mon, 16 Mar 2026 16:45:31 +0000

Hi,

I have made two automatic session in one night. The first with NGC3628 worked fine in APP, the next session with M13 (same Darks, Bias etc ...) the picture is only green, also if I click "neutralize bg". The single subs were shown right.

Here a single sub (pattern in Fits-Header is RGGB)

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and this is the stacked result:

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Interesting is that if I open both fits in f.e. ASI Fits Viewer, both look like the single sub.

Whats wrong here please.

CS
Werner

Vela Supernova Remnant

John Connor — Sun, 15 Mar 2026 08:43:24 +0000

This is a four panel mosaic of the Vela Supernova Remnant, in HOO (with RGB stars). Not really going for subtle here.

Shot from suburban Canberra, Australia. I'm guessing this target is too far south for most in the Northern hemisphere.

Please don't look too closely at the stars - I'm having some backfocus and tilt issues.

downsized for posting.

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All of my color shots using ZWO ASI585MC Pro have a Green cast

Skye Goodrich — Sat, 14 Mar 2026 16:19:29 +0000

Using all default settings, All of my color shots using ZWO ASI585MC Pro have a Green cast. I don't think this is because of Bayer RGGB matrix or extra QE sensitivity to Green, as the APP software should be demosaicing for this (i.e., it will fill in missing red/blue/green).

Comparatively, my ASI585MM Pro shots with filters look wonderful, color is very balanced.