SaratogaSkies Jim Solomon's Astropics


Latest news

December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!


NGC 7008 (Planetary Nebula)

Mouse-over to see annotations. (Requires Javascript) Click to see high-res version.

Image Details:

Camera: SBIG ST-2000XM
Mount: Takahashi NJP
Scope: Takahashi Mewlon 180
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: Astrodon LRGB I-Series Filters
Effective Focal Length: 2160mm
Effective Focal Ratio: f/12
Exposure: L: 6 × 16min (1×1); RGB: 6 × 4min (3×3)
Total Exposure: 2hrs, 48min
Date: 9/4/2007 11:25pm PDT
Location: Saratoga, CA, USA
Acquisition: CCDSoft
Focus: CCDSoft
Dithering: Manual
Guiding: Self Guided


  • IRIS: Dark subtraction, registration, gradient removal
  • JimP: Flat field, Kappa-Sigma Stacking, White balance, LRGB combine, ASINH stretching
  • CCDSharp: Richardson-Lucy deconvolution
  • Photoshop: cropping, JPG conversion

Image Description:

This is NGC 7008, a planetary nebula n the constellation of Cygnus. Love the purple hues in this nebula, a color that is relatively rare in deep space objects. This is an LRGB composite, with the Luminance binned 1×1 and the color data binned 3×3. A higher resolution image is also available. North is up.