Image processing

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LRGB Darks

Last post by chris_g « Tue Aug 22, 2023 5:47 pm
Replies: 10
by Graeme1858 » Mon Aug 21, 2023 2:17 pm

First post

As an LRGB newbie I came upon the issue of LRGB Dark frames. Who knew there had to be complete sets of LRGB dark frames! Flat frames yeah, that makes...

Last post

They're the same principle and set up with the same criteria but as Kathy points out, LRGB flat frames will probably have different exposures from...

10 Replies

727 Views

Last post by chris_g
Tue Aug 22, 2023 5:47 pm
How astrophotography has changed in the last 50 years.

Last post by Ylem « Sat Aug 19, 2023 2:35 am
Replies: 6
by KingClinton » Fri Aug 18, 2023 9:46 am

First post

Hi, found this interesting article and felt it's worth a share here.
Hope I posted this in the correct sub forum, if not, the mods can move it to the...

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I had a darkroom back in the 70s, a lot of fun and frustration :)

6 Replies

602 Views

Last post by Ylem
Sat Aug 19, 2023 2:35 am
AI & processing question

Last post by Graeme1858 « Thu Jul 27, 2023 4:58 am
Replies: 1
by Chich » Thu Jul 27, 2023 1:15 am

First post

I have not been bitten by the astrophotography bug and am not up to speed whatsoever on the current state of processing but have a question. With all...

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I came across this recently:

Trevor Astrobackyard had mixed results.

Graeme

1 Replies

357 Views

Last post by Graeme1858
Thu Jul 27, 2023 4:58 am
PI plate solving to correct distortions

Last post by SkyHiker « Fri Jul 14, 2023 8:59 pm
Replies: 2
by SkyHiker » Thu Jul 13, 2023 7:02 pm

First post

Being new to PI I looked through the WBPP log file to get an idea of what it is doing. One thing I noticed is that it is downloading Vizier star...

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I meant to address how honest it is to use tools that use star catalogs to correct images and an AI library of images to make nebulosity and stars...

2 Replies

504 Views

Last post by SkyHiker
Fri Jul 14, 2023 8:59 pm
Hope and how to deal with a flashing light at 200 feet

Last post by Graeme1858 « Fri Jun 09, 2023 11:11 pm
Replies: 18
by chris_g » Sun May 14, 2023 4:11 am

First post

Hello all,

I have an opportunity to image under a class three sky. The only issue is there is a cell tower 600 feet away with a bright white hazard...

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I'm looking forward to starting the setup of my permanent observatory. If everything goes well, that should happen around the 7th of next month....

18 Replies

1539 Views

Last post by Graeme1858
Fri Jun 09, 2023 11:11 pm
StarNet2

Last post by Juno16 « Sat May 06, 2023 11:45 am
Replies: 17
by Juno16 » Tue Feb 01, 2022 2:07 am

First post

Just curious if anyone has tried Starnet2 yet? StarNet2 was released on 1/24/22.

A few months ago, I jumped from Starnet++ to StarXTerminator and...

Last post

I tried downloading starnet at but the website is not loading.
If anyone could share the file it would be a great help.
I need the standalone version...

17 Replies

6264 Views

Last post by Juno16
Sat May 06, 2023 11:45 am
Nikon RAW vs TIFF in DSS

Last post by modelsbynight « Thu Apr 06, 2023 6:14 am
Replies: 12
by modelsbynight » Mon Apr 03, 2023 9:54 pm

First post

Hi
I have Nikon Z7ii And when I use DSS to stack images I do get an error about LibRaw not supporting Z7ii raw files
also when I do a star count in...

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@modelsbynight

I suggest that you make a quick post on the Official DeepSkyStacker Support Forum ( ).

You are running the absolute latest version...

12 Replies

1715 Views

Last post by modelsbynight
Thu Apr 06, 2023 6:14 am
Adding RGB stars to a NB image

Last post by Stuart « Mon Apr 03, 2023 7:55 pm
Replies: 8
by umasscrew39 » Sun Feb 05, 2023 5:20 pm

First post

I've been trying several methods to add RGB stars to a narrowband image but I'm not pleased with any of them. More specifically, I want to add RGB...

Last post

I haven't watched Bill's video, and his will be smarter than this, but here is one way.

1) Create a star mask. You can do it with Star Xterminator...

8 Replies

1460 Views

Last post by Stuart
Mon Apr 03, 2023 7:55 pm
Updated version of ColorMask for PixInsight

Last post by STEVE333 « Sat Mar 11, 2023 8:23 pm

by STEVE333 » Sat Mar 11, 2023 8:23 pm

The link below takes you to a post on the PixInsight forum. It discusses upgrades that have been added to the very useful ColorMask script. A...

0 Replies

631 Views

Last post by STEVE333
Sat Mar 11, 2023 8:23 pm
Using StarXTerminator and DBE for nasty gradients

Last post by Juno16 « Mon Feb 27, 2023 12:27 am
Replies: 3
by starfield » Sun Feb 26, 2023 6:59 pm

First post

Just found this neat DBE trick posted on YouTube by Adam Block. Video provides an overview of his website/tutorials, but the second half features a...

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Thanks Steve,
I did see this video this week and enjoyed seeing this technique. Haven’t tried it yet, but will soon. Actually, I just might start...

3 Replies

801 Views

Last post by Juno16
Mon Feb 27, 2023 12:27 am
The Philosophy of Processing

Last post by Greenman « Tue Feb 21, 2023 11:12 am
Replies: 19
by Greenman » Tue Aug 23, 2022 1:13 pm

First post

Well, my philosophy follows. I thought I would always go for the most 'true' or accurate respresentation of a target. This was a inaccurate idea, all...

Last post

Hi Pete,
The main thing is that people are looking up and realising the vastness of it all. Nature is a very powerful force and I find it very...

19 Replies

2735 Views

Last post by Greenman
Tue Feb 21, 2023 11:12 am
Creating master calibration photos using PixInsight

Last post by STEVE333 « Mon Feb 20, 2023 6:07 pm
Replies: 3
by Kerry C. » Sat Feb 18, 2023 10:49 pm

First post

I hope I can get what is in my mind through my finger tips in an understandable manor as I type this question.
I have used master calibration frames,...

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Hi Kerry - You only save the calibration frame. The rejection high and low frames are only for your information. They aren't used in the actual...

3 Replies

716 Views

Last post by STEVE333
Mon Feb 20, 2023 6:07 pm
APP settings for PI?

Last post by Petrol « Mon Jan 30, 2023 10:41 pm
Replies: 1
by Larry 1969 » Tue Aug 16, 2022 10:29 pm

First post

Hello everyone,
I've recently purchased Pixinsight and it's quite unintuitive, so I'd like to stick with APP for stacking for the meantime.
Right...

Last post

I don't have APP so I can't answer your question. What I would say though is I have also recently purchased Pixinsight and struggled with it. One of...

1 Replies

777 Views

Last post by Petrol
Mon Jan 30, 2023 10:41 pm
Video on BlurXterminator with Russ Croman and Adam Block

Last post by Gmetric « Tue Jan 24, 2023 3:52 pm

by Gmetric » Tue Jan 24, 2023 3:52 pm

0 Replies

529 Views

Last post by Gmetric
Tue Jan 24, 2023 3:52 pm
ASTAP, GraXpert & GHS on the Rosette.

Last post by Ylem « Tue Jan 24, 2023 1:10 am
Replies: 4
by Greenman » Mon Jan 23, 2023 2:37 pm

First post

We have had some clear cold night here over the last week (OK, -8C, I can't compete with some in the coldness stakes :icon-smile: ).
Last Wednesday I...

Last post

Beautiful colours Tony!
Amazing image.

4 Replies

881 Views

Last post by Ylem
Tue Jan 24, 2023 1:10 am
RC Astro Decon for PI

Last post by XCalRocketMan « Fri Jan 20, 2023 2:05 am
Replies: 7
by Greenman » Thu Dec 15, 2022 3:42 pm

First post

This will just give a taster as ir is a JPG.

But the default is fairly spectacular! Using the trail at the moment $89 licence, reckon at that price...

Last post

Yep. I now use all the RC Astro tools and they have drastically reduced my processing time and improved my final results significantly. As for CUDA -...

7 Replies

1251 Views

Last post by XCalRocketMan
Fri Jan 20, 2023 2:05 am
Get Some Data for Practice

Last post by Juno16 « Thu Jan 19, 2023 10:13 pm
Replies: 1
by Jockinireland » Thu Jan 19, 2023 3:48 pm

First post

One of the things beginners always struggle with is getting decent data with which to practice and develop their image processing skills. Those of us...

Last post

I saw your post on AB. Absolutely beautiful process David!
Beautiful data too !

1 Replies

554 Views

Last post by Juno16
Thu Jan 19, 2023 10:13 pm
Technique for removing unwanted artifacts from stars with PixInsight

Last post by Juno16 « Thu Jan 19, 2023 4:45 pm
Replies: 6
by STEVE333 » Wed Oct 19, 2022 3:26 am

First post

I recently learned a new technique for inserting RGB stars into narrowband images (thanks to starfield ). For some reason the large and bright stars...

Last post

Hi Steve, @STEVE333

I kept this thread bookmarked just in case!
The target that I was imaging when I responded above was the Ghost of Cassiopeia...

6 Replies

1345 Views

Last post by Juno16
Thu Jan 19, 2023 4:45 pm
Pixinsight Performance and Swap Files

Last post by Juno16 « Sun Jan 01, 2023 10:56 pm
Replies: 1
by Juno16 » Sun Jan 01, 2023 12:52 pm

First post

Hi PI users,

I know that many AP’ers here use Pixinsight (PI) for image processing. I just want to pass on what I learned recently about PI...

Last post

Also to note.

I thought that since all of the multiple swap files were on the same drive, I would mix up a combination of several swap files on the...

1 Replies

769 Views

Last post by Juno16
Sun Jan 01, 2023 10:56 pm
Terrible ringing in M78

Last post by Larry 1969 « Tue Dec 06, 2022 12:04 am
Replies: 16
by Larry 1969 » Sat Dec 03, 2022 10:05 pm

First post

Hello everyone!
This isn't really a processing question at all but, rather a What is causing this? question.
Every time I set my sights on M78 this...

Last post

Larry, I'm not sure how you are processing your data but if you are using PixInsight, Adam Block has a tutorial on eliminating these types of...

16 Replies

2049 Views

Last post by Larry 1969
Tue Dec 06, 2022 12:04 am
Pixinsight's New Spectrophotometric Color Calibration Process

Last post by Juno16 « Fri Dec 02, 2022 12:40 am
Replies: 4
by Juno16 » Thu Dec 01, 2022 1:43 pm

First post

Hi AP’ers,

Just curious is anyone here has tried the new Pixinsight SpectrophotometricColorCalibration process and what are your thoughts?

I saw...

Last post

Thanks Jim for being the tip of the spear on testing out so many of these new processes and then sharing with us.

I hadn't been checking the...

4 Replies

1402 Views

Last post by Juno16
Fri Dec 02, 2022 12:40 am
whale galaxy

Last post by Mirrorgirl « Mon Nov 21, 2022 5:49 am
Replies: 3
by Mirrorgirl » Sun Nov 20, 2022 11:20 pm

First post

Hi

Here's some data that David gave me to practice on to test my processing skills and here's what i did

52513539295_50282b52f0_c.jpg

Thanks...

Last post

That's not bad Rhoda. I'd try just anothecurves stretch to brighten up the galaxies and it will look real good.

Did you manage to track through the...

3 Replies

747 Views

Last post by Mirrorgirl
Mon Nov 21, 2022 5:49 am
Shall we reboot the AP Processing Challenge

Last post by Stuart « Sat Nov 19, 2022 5:13 am
Replies: 2
by Jockinireland » Tue Sep 06, 2022 8:01 am

First post

The AP processing Challenge has been in a bit of a hiatus over the summer. Partly as others things got in the way for me and partly because the last...

Last post

I m back after a long hiatus. Yes, I'd partake.

2 Replies

624 Views

Last post by Stuart
Sat Nov 19, 2022 5:13 am
Is there such a thing as to much imaging data?

Last post by chartram « Fri Nov 18, 2022 3:46 pm
Replies: 14
by Kerry C. » Wed Oct 19, 2022 10:10 pm

First post

Question for those in the know...
Is there such a thing as too much data on a single image, to where the image processing quality return is not...

Last post

@Kerry C.

Sorry to be late :-)

A lot of EXCELLENT info provided here. One thing I tend to consider when guesstimating both the integration time...

14 Replies

1998 Views

Last post by chartram
Fri Nov 18, 2022 3:46 pm
Pixinsight WBPP Local Normalization Issue

Last post by Juno16 « Sun Oct 30, 2022 3:05 pm
Replies: 18
by Juno16 » Sun Oct 23, 2022 3:38 pm

First post

I just want to share this just in case someone had issues like I did with WBPP Local Normalization in Pixinsight.

The first time that I used LN in...

Last post

Regarding the LN Reference frames, I see them in the masters folder, along with the regular masters. Should I be doing anything with them? Or are...

18 Replies

1672 Views

Last post by Juno16
Sun Oct 30, 2022 3:05 pm

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