View Single Post
  #1  
Old 13-02-2015, 02:05 AM
skysurfer's Avatar
skysurfer
Dark sky rules !

skysurfer is offline
 
Join Date: Dec 2011
Location: 33S 150E (AU holiday)
Posts: 1,181
Composite images white+Halpha Orion and Eta Carinae

Yesterday night (Thu morning AEDT) I took shots of the sky from Tulbagh, Western Cape, South Africa.
I used the 6d (not modded) with Canon EF 85mm f/1,8 squeezed to f/2.5, ISO 1600, 20 frames of each 30 seconds.
And in both cases after shooting the 'white' frames I screwed in a Baader 7nm wide Halpha, switched ISO to 6400, and made 8 frames of 2 minutes to compensate the attenuated Halpha in an unmodded EOS.
Both sets I stacked in DSS, put the Halpha 'autosave.tif' as an overlay layer in Photoshop, did some finetuning and got this result.

1: Orion constellation
2. Eta Carinae and Running Chicken.
Attached Thumbnails
Click for full-size image (orion-20x30sec-1600-20150211.jpg)
214.0 KB33 views
Click for full-size image (carina-20x30sec-1600-20150211.jpg)
207.3 KB25 views
Reply With Quote