Astro Pixel Processor Forum - Recent Topics

colors of master files

yeantbron — Wed, 16 Sep 2026 14:30:00 +0000

Hi,

this might be a silly question, but I'm wondering what the red color on my master flat means.

Is there an error, or is it normal?

Thanks.

10995

And get well soon, Mabula! ;)

Mosaic panels not aligned.

Paul — Tue, 15 Sep 2026 09:45:22 +0000

10994

Hi!
I have trouble getting my Mosaic right.
Version: Beta46
DDC on
Mode: Mosaic.

Look at my screenshot.
What goes wrong?

Thanks!
Paul.

Why does my RGB histogram show grey/blue/cyan for my flats

astrogee — Sun, 13 Sep 2026 21:18:01 +0000

I don't normally look at my flats but in checking my last batch, I had an IDAS LPSP2 filter in the image train and I never noticed this before but the histogram is showing grey/blue/cyan. What is going on here? Even with the filter, I would still expect the RGB histogram to produce RGB components that may or may not overlap. My target results are fine - though quite a bit of green cast - forcing me to use neutralize-BG - which I never had to do before. Please see my attached screenshot of APP.

10992

Trial licence and emails to support

Yury — Sun, 13 Sep 2026 14:36:55 +0000

Hi, I've been evaluating trial licence for some time and at some point I decided not to go ahead with Astro Pixel Processor. I've got an email reminder about my trial licence expiring soon which contained this:

- if you want to be removed from our records and no longer receive this warning,

please contact support at:

So, I've sent an email about that to the support email address. Then a week later I've got another reminder. Sent my 2nd email to support. Now I've got 3rd email with the reminder about my trial licence expiring soon.

I'm not sure why my 2 emails were ignored, though perhaps it's for the best as I've changed my mind again and actually want to purchase full licence after all.

Is there a way to contact Astro Pixel Processor other than their official email address (since my emails sent to that address seem to vanish)?

SumSignalInCropWorker error

Jon Woodhead — Sun, 13 Sep 2026 11:58:29 +0000

Here is a new error which I have only just encountered...but I have seen it in two datasets now, during normalisation of previous stacks ie H, O, S and RGB, prior to combination. Registration works fine but then APP stumbles at normalisation. It seems to be a fatal error, requiring a re-start.

I can see a post on the forum about such an error from two years ago but without any apparent resolution. Any ideas @mabula-admin? I'm using beta 45 on Apple Silicon.

many thanks in advance for any advice, Jon

10991

DDC failed

Werner Stumpferl — Sat, 05 Sep 2026 09:22:06 +0000

Hi Mabula,

first, good to hear that you are healthy again.

Second:

I have a problem with the registration. I have made two separate stacks from different nights. Both images for itself are fine, all stars registrated and congruent until the corners. But if i stack now both stacked images, no setting helps, the total stacked image is not registered well. I have tried DDC on/off, Mosaicmode, Normalmode, 500 stars analysis, 10.000 stars analysis, with/without multisession processing ... the result is always this, only on the right lower side all stars are not congruent.

Here night one (50x300s) and night two (40x300s)

10985

and here the result when I stack both images

10982

If I take all single subs from both nights and stack them in one session, the result is good (50+40 *300s).

10983

So why is it not possible to stack different stacked images, but no problem with single subs from different sessions ?

best regards

Werner

PS: I tried it with several different images, made with different telescopes, different cameras etc. It is always the same effect. Stacking ALL subs together from different nights, different optical trains and different cameras ... result is fine. But if I stack day by day and stack the results to a final image ... failed with not congruent stars, in the center good, at the corners bad.

Get well soon Mabula

hector Duran — Sat, 05 Sep 2026 06:12:10 +0000

@mabula-admin I just read about your health issues. I'm sorry to hear that, but you are now recovering, so that makes us happy. Get well soon. Héctor

UPDATE FROM MABULA

Dermeval Carneiro — Wed, 02 Sep 2026 13:11:12 +0000

Dear Mabula, have a good recovery.

Get well soon!

Andy Booth — Wed, 02 Sep 2026 08:19:57 +0000

Very sorry to hear of your health problems Mabula.

Work is just work, but health is your life, please take care and take all the time you need to recover.

Best wishes , and hoping for a speedy recovery!

andy

+Seestar Subs

Trevor Appleton — Sat, 29 Aug 2026 13:49:08 +0000

One mainly for Mabula.

I asked here about a couple of months ago whether APP could stack Seestar subs (which of course have already been corrected for Darks and Flats). He asked me to upload them which I did but I never heard any more.