Go Back   IceInSpace > Images > Deep Space
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 23-09-2012, 12:23 PM
solissydney (Ken)
Registered User

solissydney is offline
 
Join Date: Mar 2006
Location: Castle Hill Sydney
Posts: 660
Helix NGC 7293

I am slowly getting used to stacking images using Deep Sky Stacker and Photoshop CS5. My JPEG images are improving, but Raw ones has me beat so far.
The finished raw image from DSS, including darks and flats, being black as in black, is a real problem to me. I have done a lot of reading on the web but have found no answer as how to lighten them in order to view the embedded image.
Attached is an JPEG image taken using my Canon 5D MK ll as prime.
50 images at 80 sec each with darks and flats, two nights ago with the moon well up in the sky.
I am quite pleased with that one.
Attached Thumbnails
Click for full-size image (Helix-Web.jpg)
68.0 KB77 views
Reply With Quote
  #2  
Old 23-09-2012, 12:32 PM
RickS's Avatar
RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Ken,

Are you stretching the stacked RAW images with Photoshop? They will be very dark until you do this...

Cheers,
Rick.
Reply With Quote
  #3  
Old 23-09-2012, 01:01 PM
solissydney (Ken)
Registered User

solissydney is offline
 
Join Date: Mar 2006
Location: Castle Hill Sydney
Posts: 660
Helix

Yes Rick.
I usually start off with brightness & contrast, Levels and then play with Curves. But am not having much susscess.
So you recommend Curves as a first step then?
The image of Helix must be a particular tricky one because of its faintness.
ken
Reply With Quote
  #4  
Old 23-09-2012, 01:24 PM
RickS's Avatar
RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Sorry, Ken, I've never done stretching in PS (I use PixInsight). Just thought that might be where your problem lay.
Reply With Quote
  #5  
Old 23-09-2012, 01:38 PM
solissydney (Ken)
Registered User

solissydney is offline
 
Join Date: Mar 2006
Location: Castle Hill Sydney
Posts: 660
Helix

Thanks anyway for your support Rick
Ken
Reply With Quote
  #6  
Old 24-09-2012, 09:46 AM
Cosmic's Avatar
Cosmic (Daniel)
Registered User

Cosmic is offline
 
Join Date: Oct 2010
Location: Darwin NT
Posts: 353
Good effort there, keep it up.
Reply With Quote
  #7  
Old 24-09-2012, 12:59 PM
solissydney (Ken)
Registered User

solissydney is offline
 
Join Date: Mar 2006
Location: Castle Hill Sydney
Posts: 660
Helix

Learning curves are good because it stretches one's mind.
Thank you
Ken
Reply With Quote
  #8  
Old 26-09-2012, 05:25 PM
PRejto's Avatar
PRejto (Peter)
Registered User

PRejto is offline
 
Join Date: Jan 2011
Location: Rylstone, NSW, Australia
Posts: 1,506
I'm pretty new to this too, but may I recommend that you do not start with brightness/contrast!! If you have photoshop use levels (or curves if you know what you are doing) together with layers so that your edits are not destructive. Do as much as possible using adjustment layers until you are happy with the result. Only then "flatten" the image as a last step. Otherwise every edit you do detroys data that you will never get back.

I'm sure there are many books out there, but I'm liking the Scott Ireland book "Photoshop Astronomy." Bintel has this (or had it anyway).

Peter
Reply With Quote
  #9  
Old 27-09-2012, 07:32 AM
solissydney (Ken)
Registered User

solissydney is offline
 
Join Date: Mar 2006
Location: Castle Hill Sydney
Posts: 660
Helix

Thank you for your input Peter.
I must look into the usage of layers in Photoshop.
Ken
Reply With Quote
  #10  
Old 28-09-2012, 10:38 PM
Ross G
Registered User

Ross G is offline
 
Join Date: Apr 2007
Location: Cherrybrook, NSW
Posts: 5,013
Nice photo Ken.

Keep it up and good luck.

Atalas (Louie) on this site has some great short but intensive Photoshop tutorials that will help improve your images.

Ross.
Reply With Quote
  #11  
Old 29-09-2012, 11:37 AM
solissydney (Ken)
Registered User

solissydney is offline
 
Join Date: Mar 2006
Location: Castle Hill Sydney
Posts: 660
Helix

Thank you Ross.
I shall keep on trying
Ken
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 10:45 PM.

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