All these pictures of were taken using the Meade 2x Barlow with a 10 inch Meade LX200 GPS telescope and a Logitech Quickcam Pro 4000.

2 May 2007: 23h38 Beta Crux: 20h57 for half an hour Each exposure at 5fps for 60 seconds

Experiment to see how round webcam-captured stars can be ...

First line: Divx with 1/100s exposure, Divx with 1/200s exposure, Huffyuv with 1/100s exposure

Second line: Huffyuv with 1/200s exposure, Huffyuv with 1/500s exposure, Huffyuv with 1/1000s exposure

2 May 2007: 22h57 to 23h00 70 frames stacked out of 300 Individual exposures: 5 fps for 300 seconds

Jupiter at an altitude of 35 degrees.

Top line: Divx 1/25 sec. 50, 70 and 90 frames stacked

Bottom line: Divx at 1/50 sec. 50; Huffyuv at 1/25 sec; Huffyuv at 1/50 sec

Conclusion: 1/50 better than 1/25 for Prime focus Jupiter webcam astrophotography.

3 May 2007: 23h23 Divx at 1/5 sec 5 fps for 60 seconds	3 May 2007: 23h25 Divx at 1/10 sec 5 fps for 60 seconds
3 May 2007: 23h23 Huffyuv at 1/10 sec 5 fps for 60 seconds - Unsharp Masked	3 May 2007: 23h25 Huffyuv at 1/10 sec 5 fps for 60 seconds - Wavelets

Conclusions

- very little difference between 1/5 and 1/10 sec exp. time in this test case
• - Divx (more compressed) higher quality than Huffyuv (no compression) ???
• - Wavelets cause grainly look - unsharp masking results in more cloudy-textured Jupiter

Jupiter at an altitude of 40 degrees.

Apparent diameter: 43.2 "

Captured in Alt/Az mode using 2x Meade Barlow.

Prime focus: Ganymede (bottom right) and Callisto.

Left to right: 10, 25 and 100 frames (stacked out of 300)

Orientation slightly rotated compared to this screen print taken from Rondi's Jupiter freeware.