SaratogaSkies Jim Solomon's Astropics

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December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

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NGC 7293 (Helix Nebula [test shot])

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Image Details:

Camera: SBIG ST-2000XM
Mount: Astro-Physics 1200GTO
Scope: TMB 152/1200 APO Refractor
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: Astrodon Hα OIII 6nm Filters
Effective Focal Length: 1200mm
Effective Focal Ratio: f/7.9
Exposure: {1 Hα, 1 OIII} × 16min @ -20°C
Total Exposure: 0hrs, 32min
Date: 12/5/2007 6:46 PM PST (Start)
Location: Saratoga, CA, USA
Acquisition: CCDSoft
Focus: Manual
Dithering: None
Guiding: Self Guided

Processing:

  • IRIS: Dark subtraction, registration, White balance, ASINH stretching
  • Photoshop: Dust and Scratches, JPG conversion

Image Description:

This is a test shot of NGC 7293, aka, the “Helix Nebula”, a planetary nebula in the constellation of Aquarius. This is First Light for my new TMB 152/1200 APO Refractor and my new Astro-Physics (AP) 1200GTO German Equatorial Mount. I snuck in these two exposures, one each of my Hα and OIII, before the clouds wiped me out. I didn't even bother to really nail the focus, which I think I missed slightly. Nonetheless, I found the shot interesting enough to post. This is a pseudo-“True Color” image, with R:G:B = Hα:OIII:OIII. A higher resolution image is also available. North is up.

 
IC 1287 (Reflection Nebula)
SaratogaSkies Jim Solomon's Astropics

Search

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!

Links:

IC 1287 (Reflection Nebula)   [obsolete]

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 20 x 1min @ ISO 1600
Total Exposure: 0hrs, 20min
Date: 7/20/2004, ~11pm PDT
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: None
Guiding: None

Processing:

  • IRIS: Dark subtraction, flat frame, registration, Kappa-Sigma stacking, and noise reduction
  • Photoshop: Color mixing, crop (2/3 x), image scale (3/8 x), JPG conversion

Image Description:

IC 1287 is a very faint reflection nebula in Scutum. In this image it is just barely visible as a blue "halo" around the bright star in the center in the field (SAO 161569). This image could have used more exposure, but tracking problems ruined most of the frames I shot. The transparency and seeing were pretty lousy too. Those diffraction spikes look cool, though, don't they!? <g> This is approximately 2/3's of the full frame, scaled for display on the web. North is up.