Friday evening was the first nice clear skies in over a week. So we were out observing and imaging. by 9pm the temp had dropped to 6.6C, below the predicted low of +7C. In the end it went down to +0.7C just before sunrise.
Weather forecasting is not even close!

So.. this is Jupiter at azimuth 178, almost due south, as good as it will get this year, at 2020 sept 12, 00:48 UTC or 2020 sept 11 20:48 EDT. It took 30 minutes to find Jupiter in the Meade 102mmSC on the Meade LSX55 mount. I ended up increasing the height of the tripod so I could go around back outside of the observatory (4’x4′) and look through the telrad.
That did not work out as the mount tripod leg started to slip.
After securing that again, I went inside the observatory and limbo’d under the counterweight arm to get in behind the scope to peer through the telrad.

Finally nailed it, used a two hole Hartmann mask to attempt a good focus, but it looked pretty poor all in all.
Note to self: Make another Hartmann mask. This one is too big and the two holes impinge on both the secondary mirror and the outside of the corrector plate.

With Firecapture and the ZWO ASI 290MC camera, I took a 30 second imaging run with image brightness around 70%, giving a 66ms exposure, with no autoalignin gand a region of interest of around 600×600 pixels.
Then I took another with autoalign turned on. This helps give me a record of the seeing that night.
Things looked good. The mount was not tracking well so I was manually guiding corrections every 30 seconds or so.
Then I moved up to a 120sec run, correcting guiding again about every 30 seconds.
The 120 sec was the limit I used on the older 20cm meade lx200gps.. but then I realized that was because of its higher resolution and the max time before a surface feature moved from one pixel to the next.
On this smaller scope, I should be able to do longer imaging runs without that happening.
So I bumped it up to 180 seconds, more frames per run allowing for better stacking.

In the event the dew fell, the corrector plate fogged over and I called it a night after only 11 runs in total.
Note to self – build a small dew shield.
I am toying with the idea of building a slightly larger imaging observatory. 4’x4′ gross is just a little too small.

So.. without further , here is the best of Jupiter last night, serendipitously capturing a shadow transit of the satellite Europa and Europa itself on the upper right of Jupiter.

And an animated .gif of the 11 images of the night