SaratogaSkies Jim Solomon's Astropics

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IC 1284 (Emission + Reflection Nebula)

Image Details:

Camera: Canon Digital Rebel (300D)
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: 24 x 4min @ ISO 800
Total Exposure: 1hrs, 36min
Date: 7/28/2005 11:01:46 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
  • Photoshop: Levels, cropping, JPG conversion
  • Neat Image: Noise reduction

Image Description:

This is IC 1284, an Emission plus Reflection nebula in the constellation of Sagittarius. A modified camera would have done a better job of bringing out the red, Hα portion of the Emission nebula, but at the potential cost of masking the blue Reflection portion, at least in IC 1284. The other two Reflection Nebulae in the lower right are NGC 6589 and NGC 6590, respectively. Several Dark Nebulae (foreground dust which obscures our view of anything behind it) can be seen snaking their way through various portions of the image as well. This is the full frame, shrunk for display on the web. North is up.

 
Mars
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:

Mars   [obsolete]

Image Details:

Camera: Nikon D100
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Eyepiece Projection
Additional Optics: Celestron "Kit" 4mm Plössl
Filter: None
Effective Focal Length: 16000mm
Effective Focal Ratio: f/80
Exposure: 2 x 1/8 sec + 1 x 1/4 sec @ ISO 200
Date: 8/23/2003, 1:30am PDT
Location: Saratoga, CA, USA
Acquisition: Manual
Focus: Manual
Dithering: None
Guiding: None

Processing:

  • IRIS: registration, stacking, wavelet processing, cropping
  • Photoshop: rotation, image scale (1/2 x), JPG conversion

Image Description:

Taken within days of Mars' historic rendezvous with Earth in August of 2003, within weeks of getting my C8-NGT, and long before I knew what the heck I was doing. It was rather cool of Jon to let me borrow his D100 to get this shot. Mars' North is up.