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Sunday, November 1st, 2009
 A clear night........sort of
 
It's been so long since I've posted anything, I have forgotten how to use the site.   With a full moon and thick dew, I decided to have one more go at Jupiter.....experimenting with another scope.   As it turned out, I wasted my time.
 
Nothing ventured, nothing gained, but the experiment was a failure.  I learned that a 130mm f/5 Newtonian is NOT the scope for planetary imaging.......even with a 3x barlow, a 650mm focal length is just not close to enough.
 
On top of that, the seeing was poor to terrible........the video image was boiling.   The attached image is the best of 4 separate video clips I processed in Registax.   Approx 1246 frames processed and stacked out of 1670 frames.
 
Another issue.  An f/5 Newt, a camera equivalent to a 5mm eyepiece, and a 3x barlow, creates a tiny focusing range....the slightest touch on the focuser brought the image in and out of focus........although anything close to a good focus was not happening.
 
Back to my f/13 Mak-Cass for the time being.   At least I can get some reasonable scale with a 2x barlow......although tonight, I don't think the results would have been much better....just a larger image.  Ultimately, I need more aperture.....an f/10 11" SCT would be ideal, but I would settle for an 8".....although both are out of the question budget-wise, at least for the time being. 
 
Compare this to my best image with the Mak-Cass on a night of good seeing......no comparison. 


Image Gallery For This Session
Jup 11 1 09 c Jupiter 8 16 09 a2c
   

Jup_11_1_09_c.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 11/06/09 at 09:49am Barry wrote:
I'm sorry, I have no idea. My assumption is that Jupiter is moving toward the sun.....as is the earth and the rest of the planets. If Einstein is correct, and we are moving around the sun in curved space, we will eventually (billions of years from now), spiral into the sun. I think the moon is moving away from us due to the initial impact that created it. At some point, it will either break free of Earth's gravity (curved space) or it too will eventually stop receding and spiral into the Earth. Depends on what is stronger....it's motion away, or gravity's pull on it. But.....all this could be dead wrong. LOL

On 11/06/09 at 09:34am Philipp Kornreich e-mail: pkornrei@syr.edu wrote:
Do you have any data on how fast Jupiter is recessing from the sun. That is how fast is Jupiters orbital semi major axis increasing? For example, our Moon is recessing from the earth at a rate of 38 mm per year.

Sincerely

Philipp Kornreich



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