Friday, July 01, 2011

M27 Dumbbell Nebula

This came out a little better than I anticipated, only because I had left my camera at ISO3200!!!! When I set up my shots, I usually take a 30 second exposure at ISO3200 to make sure the object is well-centered. I did that as usual, but then forgot to take the ISO down to my usual settings (800 or 640) for my light frame acquisition. So, it's a bit busier than normal and I seemed to have collected a lot of data (check out all those background stars!) AND it took forever to process as a result. Lesson learned! Anyway, it's my best M27 shot yet, I think. Nice color and shape to the object itself.

Image Details:

  • Imaging Scope: Astrotelescopes 80mm ED Refractor
  • Imaging Camera: Nikon D7000
  • Guiding Scope: William Optics 66mm Petzval Refractor
  • Guiding Camera: Meade DSI-C
  • Mount: Celestron CGEM
  • Exposures: 8 * 7 minute lights, dark and bias frames
  • ISO 3200! (oops)
  • Aligned and Stacked in Deep Sky Stacker
  • Post-Processing in GIMP (contrast, saturation, curves and unsharp mask)
  • Noise Reduction in NeatImage (Filter and Sharpen)


Polaris B said...

Very nice, Phil! M27 is always an interesting target. It's just nice to have a clear sky, no?

Phil said...

It's amazing! We had another good night last night, despite SkyClock predicting otherwise.