18 images stacked
101 images
I cranked up the eye-piece projection magnification,
so I didn't need to (re)size these images up. The down
side is I lost a lot of color detail as I pushed the
webcam to its limits: they're nearly black and white images.
Both images are from the most-steady AVI clip, with
one stacking 18 images and the other, 101. Notice
the difference in smoothness. The 18-image version
shows more 'grain/noise', but also more fine detail, I think.

The shot was done as I did the last one, except I increased
the magnification
by moving the camera ~ 2" back from the eyepiece.
This is a stack of only
4 images! (I couldn't keep the image in view very
long...)
The image was taken 8/9/03 at 4:30 AM local time.
I believe Syrtis Major is visible at the center of
the shot.
Imaging: ADS Turbo 2.0 Webcam 648x480 @ 30 frames/sec
Telescope: Meade StarFinder 10" F4.5 6.3 mm Plossl eyepiece ~ 2.5" eyepiece projection
Image Processing: Stack of 4 images.
RegiStax stacking software and wavelet sharping.
Adobe Elements bilinear resizing and dust artifact removal.

From T.F.:
"Here's my Webcam picture of Mars on July 31 at 4 AM local time.
Except for the sleep part, I'm having fun with this!"
The details of how I got this:
Webcam: ADS Turbo 2.0 capturing
640x480 frames at 30 frames/sec for ~ 10 sec (it has a
CMOS sensor with 1.7 Lux sensitivity and connects via USB 2.0 to support
that capture rate)
Telescope setup: Meade Starfinder 10 F/4.5 with a 3.5" offaxis stop. Eyepiece projection through a 6.3 mm Plossl
Post processing: Used RegiStax
software to stack ~50 of the best frames and its wavelet filter to sharpen
the
picture. Used Adobe Elements (barebones Photoshop) to resize 70 pixel original
image to ~135
pixel image using bilinear interpolation.