Reprocessed the first picture of Mars in the row above on 15 September 2003
Processed to display correctly on Windows PCs	Processed to display correctly on Apple Macintoshes

From left to right:

• Mars at 00h35 UT - 10th of a second, 20 gain, 50 gamma, 90 saturation
• Mars at 01h10 UT - 10th of a second, 20 gain, 50 gamma, 80 saturation
• Mars at 01h17 UT - 10th of a second, 10 gain, 50 gamma, 90 saturation

For some reason the pictures of Mars gets less detailed going from left to right. It might be that for the first AVI the webcam was still cold - I kept the telescope and attached camera out in the cold to stay cold.

By the time the third AVI got captured the webcam heated up just a little bit - but enough to result in a less detailed third image.

I refocussed between each of the images on this page.

This trend is repeated for the images below - the second image was taken 15 minutes after the first.

Mars was higher than 50 degrees up in the sky so it cannot be that.

Here are facts for the first picture shown here:

In order to make the images of Mars a little bit larger I added the 3x Barlow after the 2x Barlow. (I removed the lens from the 3x barlow).

The further you place your camera from your barlow lens the larger your projected image will become.

The 2x barlow projected images 114 pixels across.

The 2x barlow plus the empty 3x barlow tube projected images 152 pixels across.

So the larger projections are 1.333... times larger. Since the 2x barlow works at f/20 (for my 10 inch Meade f/10 telescope) the enlargement work out at about f/26.666

As you can clearly see above this helped - much more detail can be seen in these larger images.

I will wait for darker (moonless) nights to use the excellent 3x Tele Vue barlow again.

Processed 15 September 2003