#1  
Old 31-05-2014, 10:43 AM
Entropy
Registered User

Entropy is offline
 
Join Date: Feb 2006
Location: Kensington
Posts: 112
dss tutorial and help

Hey guys

Having some issues with dss. After stacking canon raw images I seem to be getting an already stretched, or non linear image. I have tried a few different stacking methods all with the same result. Any ideas what I'm doing wrong (using dss 3.3.4).

Also, I remember someone wrote an excellent tutorial of sorts in someone's thread a while ago. Would anyone happen to have a link to this for me please?

Thanks
Reply With Quote
  #2  
Old 31-05-2014, 11:50 PM
Entropy
Registered User

Entropy is offline
 
Join Date: Feb 2006
Location: Kensington
Posts: 112
Hey again,

So, I've had a couple of days to play around with some settings and I think I've made some progress

Here are images of one frame and the result of a stack

Frame - http://i1329.photobucket.com/albums/...ps5f8d006b.jpg

Stacked(no processing at all) - http://i1329.photobucket.com/albums/...ps91fa972f.jpg

Using the following settings

Stacker Settings -
Result - Standard Mode
Light - Average
Alignment - Automatic
No RGB or Per channel background calibration

Raw Settings -
Brightness, red scale, blue scale - 1.00000
Using Camera White Balance
Bilinear Interpolation

Image was taken through FSQ106 with a unmodded Canon 60D
23 frames of 450 seconds at 400ISO

Am I on the right track here?
Are any of my settings kind of wierd/strange?

Thanks
Reply With Quote
  #3  
Old 01-06-2014, 12:07 AM
Amaranthus's Avatar
Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline
 
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,202
Are you inputting RAW files? (I think Canon raws are *.CRW) Did you use calibration frames? (darks, flats, bias/offset)
Reply With Quote
  #4  
Old 01-06-2014, 12:26 AM
Entropy
Registered User

Entropy is offline
 
Join Date: Feb 2006
Location: Kensington
Posts: 112
Inputting Canon raw files (.CR2)
Haven't used any calibration frames yet as I was just trying to fix the washout I was getting with DSS.

Had a slight issue with Darks for this image set as well, accidentally selected the wrong ISO setting in my lack of sleep stupor... Looks like I'll have to get the Esky out with a few ice bricks to get the temperature at around the right level. (unless anyone else has a better idea than sticking my camera in an Esky?)
Reply With Quote
  #5  
Old 01-06-2014, 12:33 AM
Amaranthus's Avatar
Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline
 
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,202
I wait for another night of the same temperature (but cloudy). There are various ways to stack the lights that you can try, e.g. sigma clipping, but average is a good start. Now you need to start some post-stacking processing. Don't do this in DSS, try another package, like StarTools or Nebulosity.
Reply With Quote
  #6  
Old 01-06-2014, 12:49 AM
Entropy
Registered User

Entropy is offline
 
Join Date: Feb 2006
Location: Kensington
Posts: 112
I've been messing around with PixInsight, loving it... even the very steep learning curve. I just had some issues with DSS that I had never seen before, at one stage the stacked result was just a white screen.

Although when I had those issues I was in hospital on my laptop (5yo laptop) and now I'm stacking on my high end desktop. So perhaps it was a combination of inadequate 32bit computer and my pain-killer haze

Thank you for your help though, it is much appreciated.
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 01:48 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
Meade Australia
Advertisement
OzScopes Authorised Dealer
Advertisement
Lunatico Astronomical
Advertisement
SkyWatcher Australia
Advertisement
NexDome Observatories
Advertisement
Celestron Australia
Advertisement
Bintel
Advertisement
Astronomy and Electronics Centre
Advertisement