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Halo Effect ? :(

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#1 Lostone

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Posted 30 January 2020 - 08:42 PM

I've started processing this image a few days ago in APP.  I have noticed a Halo around the galaxy that shouldnt be their.  I'm trying to figure out what may have caused it.  Wondering if it could be from my flats?  or Taking flats with filter in place or even with my Flattener/reducer.

 

I do live in a brothel 8+ area, hens why I use an L-Pro filter.

 

Does anyone have any suggestions?

Attached Thumbnails

  • St-avg-2970.0s-NR-x_1.0_LZ3-NS-full-eq-add-sc_BWMV_nor-AAD-RE-noMBB-session_3_session_2_session_1-mod-lpc-cbg-cbg-csc-St.jpg

Edited by Lostone, 30 January 2020 - 08:43 PM.


#2 StarBurger

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Posted 30 January 2020 - 08:45 PM

Yes. Move away from the brothel area. Or get a red light filter....


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#3 Lostone

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Posted 30 January 2020 - 09:00 PM

Yes. Move away from the brothel area. Or get a red light filter....

Red light filter?  I have an Optolong L-Pro filter I use in light polluted areas.  And moving away from here is not an option,  Tell Phoenix to quit growing and send all those Californians back to California



#4 Gipht

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Posted 30 January 2020 - 10:03 PM

If I am seeing this one right, it is almost circular, which might hint at a reflection.   The first thing to try is without the filter, to see if the filter is causing a reflection.  If so, then extending the distance between pieces of glass sometimes helps.



#5 Lostone

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Posted 30 January 2020 - 10:14 PM

If I am seeing this one right, it is almost circular, which might hint at a reflection.   The first thing to try is without the filter, to see if the filter is causing a reflection.  If so, then extending the distance between pieces of glass sometimes helps.

Thanks,  That's my next step in finding out where this came from.    My image train is setup like this,  ApexED Reducer/flattener, 24mm spacer,  Filter holder, 11mm spacer, camera (ASI294MC)  My OTA is a Sky Watcher Esprit 100ED.  I've been using the Pegasus Flat Master Box with no issues till now.


Edited by Lostone, 30 January 2020 - 10:15 PM.


#6 B 26354

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Posted 30 January 2020 - 11:51 PM

Yes. Move away from the brothel area. Or get a red light filter....

Red light filter?  I have an Optolong L-Pro filter I use in light polluted areas.  And moving away from here is not an option.

lol.gif

 

It's an attempt at pulling your leg... which rarely works well, in writing.

 

See:

 

"Bortle" vs "Brothel"

 

"Brothel" vs "Red-light district"

 

grin.gif


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#7 Lostone

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Posted 31 January 2020 - 12:07 AM

lol.gif

 

It's an attempt at pulling your leg... which rarely works well, in writing.

 

See:

 

"Bortle" vs "Brothel"

 

"Brothel" vs "Red-light district"

 

grin.gif

LOL,  you got me on that one.  Shows how good spell check really is.

tongue2.gif


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#8 AhBok

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Posted 31 January 2020 - 09:35 AM

I cannot see it in the image you posted, but take a look at the link below. Also search on CN and you will see the grief several of us had with a similar artifact.
https://bbs.astronom...opic.php?t=8007

#9 B 26354

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Posted 31 January 2020 - 10:41 AM

LOL,  you got me on that one.  Shows how good spell check really is.   tongue2.gif

Well... "spell check" does what it's supposed to do... but that's all it does. It's up to us, as writers, to check our grammar, by proof-reading what we've written.   waytogo.gif



#10 StrStrck

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Posted 31 January 2020 - 10:56 AM

Yes. Move away from the brothel area. Or get a red light filter....

funnypost.gif

(I always wanted to use that emoji)


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#11 Rudi Bjoern

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Posted 01 February 2020 - 01:16 AM

At first I couldn't see the halo (also got a bit distracted by the spellcheck-takeover).

But stretching your jpeg, shows the halo clearly on all channels (not just red light lol.gif )

Never seen an artifact like this, strange, that the halo appears dark.

 

BrothelRedLightDistrict_RGB.png?raw=1


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#12 StrStrck

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Posted 01 February 2020 - 01:37 AM

Mornin’  Rudi. Yes, but only like one half is dark, and then the oppisite is more light dense.

Could some process with calibration have been flipped or rotated? Over correcting on one side, under correcting on the other.

(Still not explaining what caused it. I was going to suggest dark energy, but we needn’t derail this thread more than necessarygrin.gif ..)


Edited by StrStrck, 01 February 2020 - 01:41 AM.

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#13 Lostone

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Posted 01 February 2020 - 08:30 PM

At first I couldn't see the halo (also got a bit distracted by the spellcheck-takeover).

But stretching your jpeg, shows the halo clearly on all channels (not just red light lol.gif )

Never seen an artifact like this, strange, that the halo appears dark.

 

BrothelRedLightDistrict_RGB.png?raw=1

Going to try again this evening, this time without the Apex reducer/flattener and just with the Sky Watcher flattener than came with the scope.  I'm hoping it's not the reducer that's causing it.



#14 sunnyday

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Posted 01 February 2020 - 08:57 PM

I find her pretty




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