SaratogaSkies Jim Solomon's Astropics

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Saturn   [obsolete]

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Eyepiece Projection
Additional Optics: University Optics 7mm HD Ortho
Filter: None
Effective Focal Length: 9525mm
Effective Focal Ratio: f/47.6
Exposure: 1 x 1.6 sec + 2 x 2.0 sec + 1 x 2.5 sec @ ISO 100
Date: 5/8/2004, 9:02pm PDT
Location: Saratoga, CA, USA
Acquisition: Manual
Focus: Manual
Dithering: None
Guiding: None

Processing:

  • IRIS: registration, stacking, cropping
  • Photoshop: Unsharp masking, levels, image scale (1/2 x), JPG conversion

Image Description:

Pretty horrid. Took this before I knew what the heck I was doing.

 
NGC 6822 (Barnard's Galaxy)
SaratogaSkies Jim Solomon's Astropics

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NGC 6822 (Barnard's Galaxy)   [obsolete]

Click to see high-res version.

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: 12 x 5min @ ISO 1600
Total Exposure: 1hrs, 0min
Date: 8/12/2004, ~12:30am PDT
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: None
Guiding: Manual through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, flat field, registration, Kappa-Sigma stacking
  • Photoshop: Levels, Noise reduction, cropping, JPG conversion

Image Description:

NGC 6822, also known as Barnard's Galaxy, is an irregular (as opposed to spiral or elliptical) galaxy in the constellation of Sagittarius. The seeing and transparency weren't very good the night this was shot, but the image came out ok nonetheless. NGC 6822, a member of the Local Group, is a relatively close neighbor of our own Milky Way galaxy, along with M31 (Andromeda) and others. The blue nebulous regions above Barnard's Galaxy (more visible in the higher-resolution image) are, from left to right: IC 1308, H25 V, and H25 I (Bubble Nebula). North is up.

 
The Moon
SaratogaSkies Jim Solomon's Astropics

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December: Test shots with new scopes/mounts

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The Moon

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: 10 x 1/90 sec @ ISO 100
Date: 8/24/2004, ~8:30pm PDT
Location: Saratoga, CA, USA
Acquisition: Manual
Focus: Manual
Dithering: None
Guiding: None

Processing:

  • IRIS: Registration, stacking
  • Photoshop: Cropping (65%), image size, JPG conversion

Image Description:

This is a colorized version of this moon image, using the technique described in How to capture the color of the Moon. The colors in this image are not invented by processing techniques, though they certainly are accentuated by such techniques. That is, the color is already present, but almost impossible to see under normal circumstances. As the linked article indicates, each color has geological significance, generally indicating the mineral composition of the corresponding region of the moon. The lunar phase here is a 70% waxing gibbous. North is up.