Tom Fays' Mars Images from July/August, 2003

18 images stacked  101 images

From T.F.
Here's a couple more images to add to the web-site. I took them last Friday night (08/15/03), this time with
much better equatorial tracking, resulting in lots of AVI images to process, hence the delay.

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.

From T.F.
Here's the shot I got last night (this morning). 08/09/03

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.