Go Back   IceInSpace > Images > Deep Space

Reply
 
Thread Tools Rate Thread
  #1  
Old 23-05-2022, 03:10 AM
pkinchington's Avatar
pkinchington (Peter (Kanga))
Registered User

pkinchington is offline
 
Join Date: Jan 2013
Location: Melbourne,Australia
Posts: 303
Southern Pinwheel Galaxy

Managed to squeeze in some 14x2min subs in average seeing conditions last night - before the clouds rolled in. Need to get a handle on the star shapes. Can't seem to correct stars even with GSO coma corrector at "correct" spacing on 200mm f/5 newtonian.
Attached Thumbnails
Click for full-size image (Southern-Pinwheel-Galaxyweb2000pix.jpg)
195.1 KB157 views

Last edited by pkinchington; 23-05-2022 at 03:23 AM.
Reply With Quote
  #2  
Old 23-05-2022, 04:18 PM
PKay's Avatar
PKay (Peter)
Registered User

PKay is offline
 
Join Date: May 2017
Location: DEPOT BEACH
Posts: 1,643
Go for it Kanga, that's a rad Pinwheel!

Keep going
Reply With Quote
  #3  
Old 24-05-2022, 11:55 AM
pkinchington's Avatar
pkinchington (Peter (Kanga))
Registered User

pkinchington is offline
 
Join Date: Jan 2013
Location: Melbourne,Australia
Posts: 303
Quote:
Originally Posted by PKay View Post
Go for it Kanga, that's a rad Pinwheel!

Keep going

Thankyou Peter
Reply With Quote
  #4  
Old 24-05-2022, 01:56 PM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,945
Quote:
Originally Posted by pkinchington View Post
Managed to squeeze in some 14x2min subs in average seeing conditions last night - before the clouds rolled in. Need to get a handle on the star shapes. Can't seem to correct stars even with GSO coma corrector at "correct" spacing on 200mm f/5 newtonian.
Good on you for getting out there. Nice Image

On the issue of the coma/star shapes: looking at the bottom LH corner things look considerably better, suggesting that there may be some tilt in the mix to contend with, which once dealt with may improve other areas. Perhaps look at how the image train/nose piece potentially moves as you clamp up the camera - that may provide a clue as to possible movement and hence source of tilt if present. Also if you are not already doing so, consider using a UV/IR filter to cut the IR response of your fully modified(??) FF camera so that you still capture Hydrogen Alpha, but don't introduce any potential star bloat by capturing any light in the near infra red. (I'm not saying that's happening, but who knows without testing)

Best
JA
Reply With Quote
  #5  
Old 05-06-2022, 03:47 PM
pkinchington's Avatar
pkinchington (Peter (Kanga))
Registered User

pkinchington is offline
 
Join Date: Jan 2013
Location: Melbourne,Australia
Posts: 303
Quote:
Originally Posted by JA View Post
Good on you for getting out there. Nice Image

On the issue of the coma/star shapes: looking at the bottom LH corner things look considerably better, suggesting that there may be some tilt in the mix to contend with, which once dealt with may improve other areas. Perhaps look at how the image train/nose piece potentially moves as you clamp up the camera - that may provide a clue as to possible movement and hence source of tilt if present. Also if you are not already doing so, consider using a UV/IR filter to cut the IR response of your fully modified(??) FF camera so that you still capture Hydrogen Alpha, but don't introduce any potential star bloat by capturing any light in the near infra red. (I'm not saying that's happening, but who knows without testing)

Best
JA
Hi JA,
I will check all these things. The camera connection may have had some movement.
Cheers Kanga
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 09:29 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement