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Veil in Narrowband color

Started by RolandC, 08/06/2012 03:15PM
Posted 08/06/2012 03:15PM Opening Post
I was able to get some OIII and SIII exposures last week. The composite color image has H-a mapped to red, OIII mapped to blue and SII used in the green channel. I'm not fully happy with this image, and will be working more with the data. I will need more OIII and SII data to lower the noise.


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RolandC's attachment for post 55994
Posted 08/06/2012 03:30PM #1
I knew you were going to make it special!

Posted 08/07/2012 05:19PM #2
That looks awesome I wouldn't touch it would like that as a poster for the wall.
Posted 08/13/2012 09:00AM #3
I did get some more narrow band data (not as much as I would have liked) but it did fill in some of the fainter areas and reduced the background noise. Not a dramatic improvement unfortunately.


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RolandC's attachment for post 145069
Posted 08/13/2012 09:57PM | Edited 08/13/2012 09:59PM #4
I also shot the Veil the other day using my 175EDF astrograph, but only in H-a and OII. The green channel is derived via a combination of H-a and OIII. There is no SII since I wanted to concentrate on getting a high resolution image.

I used the QSI 683 camera, the refractor had the field flattener so was operating at F8.3, 1453mm focal length. Image scale is .77 arc sec per pixel. Seeing varied, but at times was down around 1.3 arc sec FWHM. There are only 4 x 15 minute exposures in this set, so not very deep. Tonight I am gathering more data. Hopefully I can get much more since this is an ideal combination. The 683 has extremely low noise compared to my STL camera, so the longer F-ratio really is not a hindrance.

This first is a 2 panel mosaic (could not fit it all in one shot). Size has been reduced radically, as you will see on the full size crops.


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RolandC's attachment for post 145078