AstroBin

AstroBin

AstroBin

Reflection on the edge of unfiltered RGB data, request for advice [Deep Sky] Processing techniques · Franz Eckhart · ... · 8 · 280 · 2

FJE89 0.00
Franz Eckhart
...
· 
·  Share link
Hello,
I would like to ask the forum for it's kind help.
Currently I'm imaging SH2-126 in RGB with a small refractor, fieldflatner and  my ASI 2600 MC pro.
I´ve staked one night of rgb data and noticed a weird reflection like structure on the left edge of the picture. 
I´ve had a similar issue last year, with the boogy man nebula, but back then I´ve canceled the project because of it.

I would like to ask you now, what kind of reflection this is and how I could get rid of it, without cropping it completely if it's possible.

The picture was staked with APP and calibrated with flats darks and bias frames.

many thanks for your kind help.

cs FranziSH2-126_RGB-RGB-session_1_forum.jpg
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
Moorefam 3.58
David Moore
...
· 
·  1 like
·  Share link
I have had something similar with a near full moon, not necessarily the cause though. Was it taken near a bright star?
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
FJE89 0.00
Franz Eckhart
Topic starter
...
· 
·  Share link
There are some bright stars on the left of the picture, I also think that this might be the reason, did you get rid of it somehow?
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
dkamen 7.44
dkamen
...
· 
·  Share link
What does your master flat look like?
Edited ...
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
FJE89 0.00
Franz Eckhart
Topic starter
...
· 
·  Share link
I will upload the flat later aswell in this thread, I didn‘t see anything unusual in the flat so far

cs Franzi
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
FJE89 0.00
Franz Eckhart
Topic starter
...
· 
·  Share link
This is the master flat, 40 subs, with 1,4seconds exposure. Gain 100, same as the lights. 
Except for it being a bit dusty, I can't see a reason for the reflection. The Reflection is also visible in the individual lights.

many thanks for your kind advices!

cs Franzi
MF-IG_100.0-E_1.42s-ZWO_ASI2600MC_Pro-6248x4176--RGB-session_1-St.jpg
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
TurtleCat 4.62
TurtleCat
...
· 
·  1 like
·  Share link
I had that before and it was due to internal light reflections in my flat field adapter combined with having a 42mm tube going to an APS sensor. When I bought a newer 48mm flat field adapter the problem disappeared entirely ever since. So that’s where I would suggest taking a look.
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
dkamen 7.44
dkamen
...
· 
·  1 like
·  Share link
Yeah, I was suspecting undercorrection but this clearly isn't the case.
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
FJE89 0.00
Franz Eckhart
Topic starter
...
· 
·  Share link
Ah that could be the case, there is small shiny aluminium ring in my fieldflattner tube! I guess i‘ll try to blacken it with a felt pen and flocking tap, maybe that‘ll do the trick! 

Thank you for your replies!
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.