Go Back   IceInSpace > Beginners Start Here > Beginners Astrophotography
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 20-03-2012, 08:07 PM
graham.hobart's Avatar
graham.hobart (Graham stevens)
DeepSkySlacker

graham.hobart is offline
 
Join Date: Nov 2008
Location: hobart, tasmania
Posts: 2,241
Reprocessed Eta

The Sky down here has that bruised look you associate with inclement weather like tornadoes (I know I saw one in the US in 1992). But it's just blustery and overcast with forecast rain later. Only thing to do as the child is in bed and the Wife is at the cinema is reprocess the old images.
This is a more sympathetic (less done really) reduced JPEG of my mammoth seven hours of date on Eta. Really, I think I overkilled it somewhat, but when you are guiding well and you have a lovely flat PHD graph, you really don't want to move at all. I don't really think you can suck more out of an 80mm refractor, with an unmodded DSLR (1000D).
Slight technical hitch with the QHY 8 you see, I exploded it by accident so it's winging it's way back to Beijing as we speak for a (hopeful) new circuit board.
And still waiting the camera adaptors for the Tak. Was tempted to get the pig out (8" Newt) but it's so windy.
Even the night has turned it's back on me!
Anyhoo,
Eta, seven hours of 5 and 10 minute subs, 1000d, 20'c EXIF, Meade 80mm refractor, guided with mini guidescope/finder/ssag/phd.
Stacked in DeepSkyStacker, processed in Star Tools- I think I went like this...
screen stretch
bin to 35%
crop around the edges
lens to 144% to try and get rid of coma
Develop to approx 96-97%
mask to nebula (fill lighter areas)
wipe on auto
keep mask
colour -sat to 140-150%
wavelets as seen on screen (according to taste)

mask clear
mask auto stars then keep
sat to 120-130%
mask then invert
I think I did flux then but didn't keep notes
anyway didn't use contrast or optimise as found it too harsh -maybe my way of working.
I have tried to keep the alterations minimal as I am a learner on the post processing stuff.
Anyway time for more Cat Stevens and a lager....
Oh yeah- there is some 3hrs of Cent A as well.
Graz
Attached Thumbnails
Click for full-size image (Etamarch 18st4.2.jpg)
198.8 KB27 views
Click for full-size image (CentAmarch2.jpg)
191.0 KB19 views

Last edited by graham.hobart; 20-03-2012 at 08:20 PM. Reason: add photo
Reply With Quote
  #2  
Old 21-03-2012, 09:20 AM
rcheshire's Avatar
rcheshire (Rowland)
Registered User

rcheshire is offline
 
Join Date: Apr 2010
Location: Geelong
Posts: 2,617
7 hours. It looks good Graham. You won't know yourself with the QHY8 and Tak (refractor?) and, you won't need that cold box. It's not easy to do a good eta.
Reply With Quote
Reply

Bookmarks


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 05:38 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement