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This picture is a composite of two images taken in the infra-red. Callisto was too far from Jupiter
to be included in a single frame. The picture was taken only 20 minutes after sunset, so the sky was
still very bright, and the air scatters less infra-red light. Move your mouse over the image to see the satellites identified. I have increased the gamma of the mouseover picture to make the satellites more visible on dark monitors. Date and Time: 7th June 2005 20:43 and 20:46 UT Camera: ToUcam 740K Telescope: LX200 at prime focus Capture: K3CCDTools. High gamma, 1/25", 50% gain, 502 and 552 frames Processing: Registax. 389 and 319 frames stacked. Wavelets 1-3 = 10, gamma 0.7, contrast 145, brightness -14 |
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The satellites are on the move all the time.
This picture is a composite of five images superimposed. The first four were taken at 10-minute
intervals and then there was an 18-minute interval before the last image. The images were
superimposed by placing the images of Jupiter on top of one another so that the movement of the
satellites can be seen relative to the planet. Move your mouse over the image to see the satellites identified and the direction of movement. Date and Time: 28th May 2005 20:43 to 21:41 UT Camera: ToUcam 740K Telescope: LX200 at prime focus Capture: K3CCDTools. High gamma, 1/25", 60% gain, ~500 frames each Processing: Registax. Wavelets 1-3 = 10 |
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And now one in colour, taken an hour and a half after sunset.
Date and Time: 28th May 2005 21:55 UT Camera: ToUcam 740K Telescope: LX200 at prime focus Capture: K3CCDTools. High gamma, 1/33", 0% gain, 500 frames Processing: Registax. 95 frames stacked. Wavelets 1-3 = 10, gamma 0.4, contrast 105, brightness -30. |
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Finally five more images of Jupiter taken at 21:59, 22:02, 22:04, 22:05, 22:08 UT. All were taken with a low gamma, the first two with an exposure of 1/50 sec and a gain of 0, and 8% respectively, the last three with 1/50 sec and a gain of 15%. The first three were taken with the same colour balance as I used for all the previous pictures, the fourth one was with the colour balance on Auto; the last one has the colour balance set to Outside. One would have thought that the Outside setting would be the most natural one, and maybe it is, but I don't like it. Date and Time: 28th May 2005 21:59 to 22:08 UT Camera: ToUcam 740K Telescope: LX200 at prime focus Capture: K3CCDTools. See above Processing: Registax. Wavelets 1-3 = 10, gamma 0.8, contrast 120, brightness -30. |
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