Image processing

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Processing, the need and some issues

Last post by STEVE333 « Sun Dec 08, 2019 6:17 pm
Replies: 1
by Greenman » Sun Dec 08, 2019 10:32 am

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My encounter with imaging M42 on my Celestron 102 OTA showed me the power of a fast (albeit cheap) refractor. The issue, as warned of here, is CA....

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Hi GM

Here are a coupe of links to information that might help.

Steve

1 Replies

20 Views

Last post by STEVE333
Sun Dec 08, 2019 6:17 pm
MLT Noise Reduction Question

Last post by Stuart « Sun Dec 08, 2019 5:06 pm
Replies: 11
by Baskevo » Fri Dec 06, 2019 5:41 am

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Hi y'all,

During these last few days it has been ridiculously cloudy, and I have been going through some old data with pixinsight. I had a question...

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Hi James,
Here is a free video series by Warren

Here are the new videos by Warren, including MLT and work flows

Here are Adam Block's...

11 Replies

123 Views

Last post by Stuart
Sun Dec 08, 2019 5:06 pm
Combing RGB and narrow band

Last post by 1jimalexander « Sun Dec 08, 2019 12:37 am
Replies: 5
by 1jimalexander » Thu Dec 05, 2019 5:18 am

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I capture using a CCD mono with filters. I process with DSS and Photoshop. I’m looking for the best way to add visible and narrow band to the same...

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Thanks to all for your suggestions. I believe I'll try pasting into layers with PS and play with the blending and opacity.

5 Replies

84 Views

Last post by 1jimalexander
Sun Dec 08, 2019 12:37 am
New Astro Image Processing PC - Wow!

Last post by Juno16 « Sat Dec 07, 2019 9:57 pm
Replies: 10
by Juno16 » Sat Dec 07, 2019 2:05 am

First post

Hi everyone,

My son and I have been talking about building a new pc for the past several years. He’s been away at the University of California at...

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rgb ! do you have any video games to play on it ?

i agree, nvme m.2 drive is the way to go for speed (up to 3,500MB/s read)

Yeah, rgb. It was...

10 Replies

132 Views

Last post by Juno16
Sat Dec 07, 2019 9:57 pm
problem with o3 data

Last post by Micke187 « Fri Dec 06, 2019 12:01 pm
Replies: 7
by Micke187 » Wed Oct 09, 2019 6:26 pm

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I have collected some O3 data on the heartnebula but i think i got a gradient that dont think is part of the nebula.
I come and think if it could be...

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So i have had some major improvents on my o3 data and it looks like the black paint really made a difference. So my conclusion is that i was getting...

7 Replies

285 Views

Last post by Micke187
Fri Dec 06, 2019 12:01 pm
Uth oh?

Last post by UlteriorModem « Fri Dec 06, 2019 1:15 am
Replies: 14
by UlteriorModem » Wed Dec 04, 2019 11:46 pm

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Recently I have noticed all of my images have a 'glow' on the right hand side.

I suspected the calibration frames so I processed it with no...

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Okay got a new set of calibrated flats to go with the darks I got yesterday.

Applied those and it is better, I 'think'.

A background extraction...

14 Replies

171 Views

Last post by UlteriorModem
Fri Dec 06, 2019 1:15 am
Eeeee! This is Gonna be Interesting

Last post by Stuart « Tue Dec 03, 2019 2:50 am
Replies: 16
by OhNo » Sun Nov 10, 2019 11:23 pm

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Just purchased a license for PixInSIght 1.8.8, WOW, I've got some studying ahead. Any recommendations on where to start? Have found some videos, and...

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Hi James,

It's something to do with preprocessing files before image integration. I have never used it. Kayron used it in his example, and beginners...

16 Replies

405 Views

Last post by Stuart
Tue Dec 03, 2019 2:50 am
Printing Astro Photo Blues

Last post by Juno16 « Mon Dec 02, 2019 7:36 pm
Replies: 16
by Juno16 » Fri Nov 15, 2019 3:21 am

First post

Good Evening!

I am asking for guidance about an issue that I have when printing astrophotography using an online printing service.

I have posted...

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Thanks a bunch Sea_Change!

I will certainly keep my eye out for that selection.

I have found that if I open the image in PS and raise the...

16 Replies

360 Views

Last post by Juno16
Mon Dec 02, 2019 7:36 pm
How to Download and Use starnet++

Last post by STEVE333 « Sun Dec 01, 2019 10:00 pm
Replies: 13
by STEVE333 » Mon Jun 17, 2019 11:17 pm

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I've had some very nice success using the new starnet++ program to remove stars from a stretched image. The following has worked for me

I...

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Sorry Steve it looks like I'm hijacking this thread but I'm stoked, and it is on topic. So here is the final result where I applied starnet++,...

13 Replies

1447 Views

Last post by STEVE333
Sun Dec 01, 2019 10:00 pm
Milkyway .. HOW DID I DO? with limited experience...

Last post by Scott Maze « Sat Nov 30, 2019 4:15 am
Replies: 3
by Scott Maze » Wed Nov 27, 2019 1:09 pm

First post

Are these OK results... considering originals were on cellphone in September... unplanned...

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Thank you for looking again!

I have found a program, Light room... and improved my results... I understand how poor my originals are... they were...

3 Replies

106 Views

Last post by Scott Maze
Sat Nov 30, 2019 4:15 am
Question for StarTools/DSS users.

Last post by Star Dad « Fri Nov 29, 2019 6:20 pm
Replies: 4
by starfield » Wed Nov 27, 2019 9:17 pm

First post

Hi all,

Quick question on processing DSS file in StarTools. I've read different advice on which way to open the files from my OSC camera. Should I...

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Oh great! Now I have to reprocess my latest images yet again :sigh: :twitch: non-white balanced. Be interesting to see if there is (much of) a...

4 Replies

125 Views

Last post by Star Dad
Fri Nov 29, 2019 6:20 pm
M31: Any PI challengers for more LP Data?

Last post by Baskevo « Fri Nov 29, 2019 6:33 am
Replies: 7
by Baskevo » Sat Nov 23, 2019 11:18 pm

First post

Hi Ya'll! As I'm waiting for my new OTA from ES, I have been playing around with the stacking process with some data gathered with my original ED80....

Last post

Here you go:
dynamic crop
DBE
Background neutralization
Color calibration
MLT
Arcsinstretch
HIstogram transformation (multiple iterations to taste)...

7 Replies

181 Views

Last post by Baskevo
Fri Nov 29, 2019 6:33 am
Plate Solving Question

Last post by Baskevo « Thu Nov 28, 2019 8:13 am
Replies: 8
by Baskevo » Wed Nov 27, 2019 8:42 am

First post

Hey guys,

I've been using APT to plate solve, and was wondering about framing over multiple nights... Say I want my target to be a little over to...

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Thanks for the replies guys! I will have to see if APT lets me save coordinates or something. If not, I know I can at least write them down and use...

8 Replies

139 Views

Last post by Baskevo
Thu Nov 28, 2019 8:13 am
Flats trouble?

Last post by bobharmony « Tue Nov 26, 2019 2:43 pm
Replies: 75
by bobharmony » Sun Oct 13, 2019 8:21 pm
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I decided that my Iris data could benefit from fresh darks and a new master bias, as I can use any help available in getting at the dark dustiness...

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I have been experimenting with all sorts of things on the flats front and finally realized I was just confusing myself more, so I stopped and did a...
75 Replies

1529 Views

Last post by bobharmony
Tue Nov 26, 2019 2:43 pm
DSS Stars have no guts

Last post by jrm_astro « Tue Nov 26, 2019 8:21 am

by jrm_astro » Tue Nov 26, 2019 8:21 am

Hi All,

When I stack in DSS and bring the Tif over to PS for processing I see my stars have no middles. They appear very green, like halos with some...

0 Replies

57 Views

Last post by jrm_astro
Tue Nov 26, 2019 8:21 am
PixInsight Weighted Batch Preprocessing Script Released

Last post by XCalRocketMan « Sat Nov 23, 2019 2:29 am
Replies: 18
by fatboy1271 » Tue Nov 19, 2019 8:33 pm

First post

It appears I missed the release of PixInsight 1.8.8 on 2019-11-08. I installed it today and then I had about 3 rounds of updates afterwards. It looks...

Last post

Something else to keep in mind. I have been getting memory errors (crashes because protected memory is trying to be read/written) using the new PI...

18 Replies

334 Views

Last post by XCalRocketMan
Sat Nov 23, 2019 2:29 am
Is this a type of noise from DSLR?

Last post by Baskevo « Wed Nov 20, 2019 9:53 pm
Replies: 9
by Baskevo » Tue Nov 19, 2019 6:27 am

First post

Hi guys,

So I've been trying to process DSLR images in PI, and after stacking I keep getting this weird red noise-type structures... Here's an...

Last post

It was definitely my stacking process! I stacked the exact same frames through DSS, and got a WAY better result! :D

This is only an auto-stretched,...

9 Replies

236 Views

Last post by Baskevo
Wed Nov 20, 2019 9:53 pm
APT Histogram

Last post by Graeme1858 « Tue Nov 19, 2019 10:53 pm
Replies: 2
by Graeme1858 » Tue Nov 19, 2019 9:23 pm

First post

A quick question if I may.

This is a screen grab of my histogram in APT. The Luminance graph is shaded with a gap. Does the gap suggest ideal...

Last post

When in doubt, RTFM...

Anybody could do that!

I'll abandon the pursuit of experienced personal advice then and go read the book! :D

Thanks for...

2 Replies

75 Views

Last post by Graeme1858
Tue Nov 19, 2019 10:53 pm
Starnet++ and MAC

Last post by Astrovetteman « Tue Nov 19, 2019 5:16 pm

by Astrovetteman » Tue Nov 19, 2019 5:16 pm

Does anyone know how to get Starnet++ into the newest version of Pixinsight on a MAC running Catalina?? I've tried reading the read me in the...

0 Replies

44 Views

Last post by Astrovetteman
Tue Nov 19, 2019 5:16 pm
Star net users?

Last post by STEVE333 « Mon Nov 18, 2019 11:36 pm
Replies: 3
by UlteriorModem » Sun Nov 17, 2019 1:24 pm

First post

Greetings fellow Star Net users!

Star net is a module for Pixinsight which does a fantastic job of removing stars from an image so that the object...

Last post

I've had pretty good success as follows:

1) Run Starnet to produce the starless image.
2) Enhance the starless image, but, don't reduce the black...

3 Replies

156 Views

Last post by STEVE333
Mon Nov 18, 2019 11:36 pm
Tilt and curvature in my images

Last post by ic_1101 « Sun Nov 17, 2019 10:40 pm
Replies: 4
by ic_1101 » Thu Nov 14, 2019 5:35 pm

First post

I'm trying to figure out why there is a curvature or tilt in my images as seem by the elongated stars in the top left of the image.

IMG_6291.JPG...

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Thx JT, I think it was just dumb luck. After eliminating every other component I focused on the filter and it dawned on me that a glass filter will...

4 Replies

137 Views

Last post by ic_1101
Sun Nov 17, 2019 10:40 pm
Learning about PixInsight processing

Last post by XCalRocketMan « Sun Nov 10, 2019 5:17 am
Replies: 7
by Ken_nneth » Wed Nov 06, 2019 10:25 am

First post

Working with PixInsight to learn how to get good results from my subs. Trying a new method where I separate the stars from the image and process the...

Last post

I am always trying to improve my processing with respect to removing stars. I have not had much luck with PixInsight. Seems like I can't remove all...

7 Replies

252 Views

Last post by XCalRocketMan
Sun Nov 10, 2019 5:17 am
Stacked too many images?

Last post by XCalRocketMan « Sat Nov 09, 2019 11:10 pm
Replies: 8
by maceemiller » Thu Oct 31, 2019 6:14 am

First post

Hi all.

Last night I went out with my smartphone and tripod and took 94 , 10 second exposure RAW images of a section of sky.

I stacked them using...

Last post

In principle more subs is better and I certainly stack more than 100 regularly. As @bobharmony mentioned, a few bad subs can mess up the result....

8 Replies

292 Views

Last post by XCalRocketMan
Sat Nov 09, 2019 11:10 pm
Bad stars

Last post by Baskevo « Sat Nov 09, 2019 12:26 am
Replies: 22
by spectre » Sun Oct 06, 2019 9:09 pm
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Hi All,
I have been having some problems with deformed stars as well as color gradients across the stars. This is only 12 X 60 seconds of NGC 7789...

Last post

I definitely understand that! I did a lot of waiting for things to not work with that Field Flattener :P

I decided to upgrade to the ES 80mm FCD100...
22 Replies

747 Views

Last post by Baskevo
Sat Nov 09, 2019 12:26 am
Flats Failing Me?

Last post by fatboy1271 « Fri Nov 08, 2019 7:19 pm
Replies: 65
by fatboy1271 » Tue Aug 27, 2019 3:16 am
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First post

I saw from the first capture that I had a prominent dust mote. I had hoped that my Flats would fix that; however, here it is after BPP in PI. I took...

Last post

Hey fatboy! Perfect! I might go a tad dimmer--maybe down to 1.5 seconds as your blue is a bit bright. Best thing to do is extract the lightness of...
65 Replies

1629 Views

Last post by fatboy1271
Fri Nov 08, 2019 7:19 pm

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