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TMB 152 6 inch APO Refractor 1200mm focal length on
Mountain Instruments MI-250 GoTo Mount |
Lumenera SKYnyx2-2C Color Webcam with Televue Powermate
4x |
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Scroll right to see camera close-up --------------------->>>> |
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The result: Jupiter 7/2/06 0400 GMT through the SKYnyx 2-2
color webcam. 500 frames
stacked
and processed in
Registax. No UV/IR cutoff filter was used for this
image. Atmospheric seeing conditions were about
average for this
session. Jupiter was just past meridian
transit. A Televue Powermate 4x telextender was used for this
image and the image to the right, producing an effective focal length of
4800mm and an image scale before processing of 0.19 arc second per pixel. |
Same camera, but with UV/IR cutoff filter in use. The TMB optics are
already so well-corrected, I could see no improvement in resolution
details with the filter in use. These results should not be intended
to be applied universally though, as different models and designs of
telescope optics and webcams correct UV and IR focus to varying
degrees. With many telescope and camera combinations, the use of a UV/IR cutoff filter
or just an IR cutoff filter will still be advisable for best results. |
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Jupiter on 6-26-06 through the Lumenera Infinity Mono 2-1 webcam:
- 500 frames shot on each LRGB channel.
- Atik manual filter wheel using LRGB Astronomik filters.
- Each filter has built-in IR-block filtering.
- Each channel processed separately in Registax, then one final
stacked frame for each of the LRGB channels color combined in Maxim.
- Final post-processing done in Adobe Photoshop (unsharp mask,
color balancing, and other filtering tools).
- Televue Powermate 2.5x used for an image scale of 0.32 arc-second
per pixel before processing
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