Quote:
Originally Posted by mswhin63
Hi Daniel and anyone interested,
I have mixed feelings after testing a mask I made. My first test was visual, and as the post describes is a horrible diffraction node coming out from a bright target like Jupiter. I am quite sure that the moon would be terrible.
One thing I noticed was in the centre Jupiter was so clear I could even see the a shadow of Io on Jupiter surface. This I have never seen before.
It took me a while to remember but managed 2 sequences of Jupiter shots. The air conditions where I live are horrid at the best of times so it was a good test, although I would rather a better test run another day as the humidity didn't give me enough time to setup properly.
The first image is the Apodising mask put together but not permanently. It is quite easy to make although cutting circles in fly-wire is difficult. Lots of pin holding it together. Removing the mask left me with a neat aperture reduction screen for some bright planets on good day. My webcam is very sensitive.
The second image was a fast test with the mask, while the third image is without the mask. I am surprised by the results, and still do not want to finalise my results as yet without more testing. It is just my way of testing.
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This is great work you have done here Malcolm, looks easy enough to do. There is most definitely a difference there that's for sure, a more crisper and clear image is displayed by the looks. Its hard when you see a digital image and try imagine it live.
I'm going to be doing visual and web-cam'n of the night sky when she clears up. So in the mean time I mite just give this a crack and make one myself. All this rain and cloud grrr wish I was back in Perth looks clear over there now.
Anyway looks quite promising by all means
....better than spending 2 grand if this dose the job instead. What mag did you use out of interest on Jupiter.