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Friday, June 27th, 2008
 I finally got around to capturing some video clips of Jupiter.......unfortunately, seeing was only fair, and my small aperture scope [Celestron NexStar 4se] has to have above average seeing to enable me to use a barlow lens......to get a larger, more detailed image.  As it is, I ended up with a wide field shot.   It came out okay, but it was not what I was shooting for.
 
I would estimate that Jupiter never got higher than 20-25 degrees above the horizon.....not ideal for imaging.   I would love to hear from any of you who have been able to observe the planet this year under good seeing conditions
 
I did notice one major change from last year.   The Great Red Spot has changed yet again.  Last year is was a dark oval surrounded by a light outline.   This year it is almost the opposite.   Interesting.  
 
I think I may try a new approach........put my webcam in my 12" Dob, and let the planet drift across the field of view.   That should produce enough franes for Registax to work with.   It will be difficult to line up and focus, but it's worth a try.
 
So without further chatter here is Jupiter with the Great Red Spot right of center, and from left to right, Ganymede, Io & Europa.   The best 297 frames from approximately 1050 total frames.   Optimized and stacked in Registax.
 
After reprocessing my barlowed video clips, this is the best image I have been able to come up with.   The clip was captured just a few minutes after the non-barlowed image.    The barlowed image illustrates the 'seeing' quality.   Focus was as good a I could get it.
 
Images: Celestron NexStar 4se, ToUcam Pro II 840k (Alt-Az mode)


Image Gallery For This Session
jupiter627 2a2 jupiter627 2a2 title
jupiter627 4 d
   

jupiter627_2a2.jpg
Click picture above for larger version
If the picture seems too bright or too dark, try adjusting the brightness below.
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Comments:
On 06/27/08 at 06:55pm Barry wrote:
Thanks Jeff. I got lucky last year. Had some nights where I could use a 2x barlow and still get a reasonably clear image. (see "tips" page here) Oceanside Photo & Telescope in Oceanside, CA is selling a Philips webcam with capture software and a 1.25" adapter for $129.95. I am using an older Philips ToUcam Pro II. It has 640x480 resolution. The new one is 1.3 mega pixels. It's a good camera, and I think the price is right.

My camera is roughly the equivalent of a 5mm eyepiece. My telescope has a 1325mm focal length....so this photo is about 260x give or take.

I have seen some very nice images made with a webcam and a Dob....so it can be done. Now, iof we had tracking platforms for the Dobs we would be in business. LOL

On 06/27/08 at 11:46am Jeff wrote:
Thats a pretty good image for fair seeing, more detail than I could visually see with my 8" dob. I have a webcam but it is a real cheap one and I havent had much luck using it to image. I would be in the same boat as you in having to line the dob up and hope Jupiter passes through the middle of the frame while im capturing. Keep up the good work.



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