SaratogaSkies Jim Solomon's Astropics

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December: Test shots with new scopes/mounts

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Dec 3: AP1200 Arrives!

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IC 1318 (γ Cygni Widefield)

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

Image Details:

Camera: Mofidied Canon Rebel XT (350D): Hutech Type I Filter Replacement
Mount: Celestron AS-GT
Scope: Canon EF 200mm f/2.8L II USM lens
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 200mm
Effective Focal Ratio: f/2.8
Exposure: 30 x 4min @ ISO 200
Total Exposure: 2hrs, 0min
Date: 9/4/2005 10:34:49 PM PDT (start)
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: Manual
Guiding: GuideDog via Philips ToUcam Pro II (840k) through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, registration, gradient removal
  • JimP: Flat field, Kappa-Sigma Stacking, White balance, ASINH stretching
  • Photoshop: Levels, cropping, JPG conversion

Image Description:

This is a widefield shot of the γ Cygni (aka, Sadr) region in the constellation of Cygnus. I blew the focus on this, but the shot isn't too bad nonetheless. Of course, it's hard to tell that the focus is blown at the image scale displayed herein. <grin> A higher resolution image of this widefield shot is also available, as is a closeup of the immediate Sadr Region from last year. North is right.

 
Moonrise over Los Gatos
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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Moonrise over Los Gatos

Click to see high-res version.

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: None
Scope: Canon EF 200mm f/2.8L II USM lens
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 200mm
Effective Focal Ratio: f/2.8
Exposure: 1/60 sec @ ISO 100
Date: 8/8/2006 8:18:06 PM PDT
Location: Saratoga, CA, USA
Acquisition: Manual
Focus: Auto
Dithering: None
Guiding: None

Processing:

  • Photoshop: RAW Conversion, Image Scale, JPG conversion

Image Description:

This is an unprocessed shot of a 99.75% full moon rising over the Los Gatos mountains. The two bright dots in the upper-right are airplanes. A higher-resolution image is also available. Up is up. <smile>

 
NGC 6820 & NGC 6823 (Emission Nebula & Open Cluster)
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:

NGC 6820 & NGC 6823 (Emission Nebula & Open Cluster)

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

Image Details:

Camera: Mofidied Canon Rebel XT (350D): Hutech Type I Filter Replacement
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: Celestron/Baader Multi Purpose Coma Corrector (MPCC)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 40 x 4min @ ISO 800
Total Exposure: 2hrs, 40min
Date: 8/30/2005 9:41:31 PM PDT (start)
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: Manual
Guiding: GuideDog via Philips ToUcam Pro II (840k) through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, registration
  • JimP: Flat field, Kappa-Sigma Stacking, White balance, ASINH stretching
  • Neat Image: Noise reduction
  • Photoshop: Levels, cropping, JPG conversion

Image Description:

This is a "do over" of NGC 6820, an Emission Nebula in the constellation of Vulpecula. In my previous attempt with an unmodified camera, I was unable to capture the faint Hα emission nebula, and was only able to capture the open cluster NGC 6823. The modified camera excels in shots like this. A high-resolution image is also availble. North is up.