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.