AstroBin

AstroBin

AstroBin

Checkerboard pattern after stacking and star removal? [Deep Sky] Processing techniques · Danny Lee · ... · 5 · 541 · 1

Danny_Astro 2.86
Danny Lee
...
· 
·  Share link
Hi all, 

This morning I stacked together some WIP data collected so far just to see how it's looking. 

No processing other than:
- 45x300sec stacked with darks only (no flats, dark flats) Stacking with WBPP and in DSS produces the same result
- Dynamic crop to remove stacking artifacts 
- Stretched using an unlinked STF stretch
- Stars removed using StarXterminator

Has anyone seen this before, any ideas what could be causing this pattern? I also tried gradient removal techniques before removing stars but that still resulted in this pattern.
DSS Stack.jpg

Thanks
Danny
Like
×

Sorry :-(

Editing a post is only allowed within 24 hours after creating it.
×

Share this forum post

Copy the URL below to share a direct link to this post.

Close
×

Post editing not available

This post cannot be edited using the classic forums editor.

To edit this post, please enable the "New forums experience" in your settings.

Go to Settings Close
Danny_Astro 2.86
Danny Lee
Topic starter
...
· 
·  3 likes
·  Share link
Apologies, perhaps I was a bit premature posting here but I think I've solved it. 

It was caused by StarXterminator, ticking the 'large overlap' box before running star removal fixed the issue. 

Happy to delete this post or leave it here in case anyone else has the same problem down the line?
Like
×

Sorry :-(

Editing a post is only allowed within 24 hours after creating it.
×

Share this forum post

Copy the URL below to share a direct link to this post.

Close
×

Post editing not available

This post cannot be edited using the classic forums editor.

To edit this post, please enable the "New forums experience" in your settings.

Go to Settings Close
richard_ 1.20
Richard
...
· 
·  1 like
·  Share link
My understanding is that StarXterminator breaks your image down into separate tiles and analyses/extracts stars based on this. So if there was an error in this process (like ticking the overlapping box) then that would explain why you saw a checkerboard pattern on your image.
Like
×

Sorry :-(

Editing a post is only allowed within 24 hours after creating it.
×

Share this forum post

Copy the URL below to share a direct link to this post.

Close
×

Post editing not available

This post cannot be edited using the classic forums editor.

To edit this post, please enable the "New forums experience" in your settings.

Go to Settings Close
AstroBillUK 1.51
AstroBillUK
...
· 
·  Share link
Large Overlap option can help but doesn't necessarily complete eliminate the grid. Not sure what has changed. I never used to get this.
Like
×

Sorry :-(

Editing a post is only allowed within 24 hours after creating it.
×

Share this forum post

Copy the URL below to share a direct link to this post.

Close
×

Post editing not available

This post cannot be edited using the classic forums editor.

To edit this post, please enable the "New forums experience" in your settings.

Go to Settings Close
azharrana 0.00
Azhar Rana
...
· 
·  Share link
Thanks for this post, Danny. I'm getting this as well, but even with out ticking 'Large Overlap' I'm still getting the pattern. Can't see it at all before StarX. Anyone have any another suggestions?
Like
×

Sorry :-(

Editing a post is only allowed within 24 hours after creating it.
×

Share this forum post

Copy the URL below to share a direct link to this post.

Close
×

Post editing not available

This post cannot be edited using the classic forums editor.

To edit this post, please enable the "New forums experience" in your settings.

Go to Settings Close
gorann 6.94
Göran Nilsson
...
· 
·  Share link
I just had the problem and ticking the large overlap box solved it, so thank a lot for that info! The odd thing is that it happens very rarely. I think I saw it once before with an older version of StarXT, but by now I have used the new version on at least 100 images and then it happened on the 101st and I have no idea what in that image triggered it. As said in this thread I also read somewhere that it has to do with StarXT dividing the image up in squares when doing its job.
Cheers, Göran
Like
×

Sorry :-(

Editing a post is only allowed within 24 hours after creating it.
×

Share this forum post

Copy the URL below to share a direct link to this post.

Close
×

Post editing not available

This post cannot be edited using the classic forums editor.

To edit this post, please enable the "New forums experience" in your settings.

Go to Settings Close
 
Register or login to create to post a reply.
×

Warning!

This operation will reload the current page. If you have any unsaved information in a form, it will be lost.

You can also dismiss this window, and your operation will be applied at the next page navigation.