SaratogaSkies Jim Solomon's Astropics

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Mars

Image Details:

Camera: Mofidied Philips ToUcam Pro II (840k): Color RAW Hack
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: 6000mm
Effective Focal Ratio: f/30
Exposure: 256 @ 1/25s, 5fps, gain=0%
Date: 10/30/05, 1:05 AM PDT
Location: Saratoga, CA, USA
Acquisition: QCFocus
Focus: Manual
Dithering: None
Guiding: None

Processing:

  • IRIS: AVI conversion, CFA conversion, Registration, Best-frame selection, Stacking, Wavelet processing
  • Photoshop: Levels
  • ImageReady: Animated GIF conversion

Image Description:

This is a passable webcam image of Mars on a night of lousy seeing. This webcam image blows away this old one taken with a Digital Rebel.

The above image isn't an image at all — it's actually an animation. Each frame of the animation is the result of stacking the best 256 of 1000 frames from an AVI (with wavelet and levels processing, of course). Then each such frame is assembled into an animation using ImageReady. The individual frames of the animation are sperated in time by about 11min. Yes, Mars rotates about its axis very quickly. Mars's North is up and to the right in this animation. (I think. <grin>)

 
M42 (The Great Nebula in Orion)
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:

M42 (The Great Nebula in Orion)   [obsolete]

Image Details:

Camera: Nikon D100
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: 1 x 60sec @ ISO 1600 (nebula), 1 x 10sec @ ISO 1600 (trapezium)
Total Exposure: 0hrs, 1min
Date: 3/22/2004, 8:45 PST
Location: Saratoga, CA, USA
Acquisition: Manual
Focus: Manual
Dithering: None
Guiding: None

Processing:

  • Photoshop: Dark subtracktion, registration, compositing, levels, color balance, image scale (1/4 x), JPG conversion

Image Description:

This is my first ever DSLR image! Thanks much to Jon L. for letting me borrow his Nikon D100.

Some interesting notes about this image. The vertical "trail" at the bottom, center of the image is a diffraction spike from the bright, mag 2.5, star, Iota Orionis, which is just south of the field of view of this photo. The faint, horizontal line in the lower-right portion of the image is a meteor trail or a photographic defect. Not sure which. The distinct nebula above the main one is M43.