Monday, April 29, 2013

Butterfly, Crescent, and Bubble

Here is my first go at a bicolor image.  It is the same field as the previous post ... I wanted both the Butterfly and the Crescent nebulas (Cygnus) in the same field.  Oh ... and this time I didn't forget my narrowband filters. Don't give me any grief about not posting this image for 7 months.  Life happens.

I chose to experiment with a more "orange" palette.  I'm sure with some more work I could figure out how to make the OIII regions (notable around the Crescent) more obvious.  Next time.

Butterfly and Crescent and ...

Now if you blow up the part of the image next to the crescent (200%) one can just barely see the Soap Bubble Nebula.   In the red box.  Arrow pointing at it.  I'll give you a moment.

See it?  Faint little guy.  It is notable since it was discovered by a amateur astrophotographer in 2007.  Now that we know where to look anybody can image it though I thought it was pretty neat to pull it out with a lil ol' 200mm Canon lens.  

... Soap Bubble

Butterfly, Crescent, and Bubble

Taken at Lake San Antonio, CA  Sept. 12-14, 2012
QSI583, Canon EF 200mm f/2.8L
Ha (3nm): 24x10min bin 1x1 @f/2.8
OIII (3nm): 24x10min bin2x2 @f/2.8
Total exposure time 8hrs
AP900 Mount
calibration, registration and post-processed in PixInsight


  1. No need to apologize for the delay. Post 'em if you got 'em. Old ones from Calstar especially.

  2. That's nice detail in the Crescent itself! I'm not a big fan of the orange look however, it seems too much like light pollution.

  3. I was researching the idea of using a CCD with my Canon lenses and see you are already doing it. How has your experience been with this set up thus far?