It's been a while since I headed out into the cold and damp morning, due to a combination of factors including laziness, cloud cover, seeing conditions and planet positions. However, an opening appeared this morning which promised good seeing, a GRS transit and a new imaging computer to try out. I started on Saturn and the seeing at 4am was very good, so I banged off a 10 minute capture in the hope of either de-rotating the video in WJ, or at least extracting the best parts of the capture using the "Limit" tool in AS!3. The image of Saturn below was the middle 3 minutes of the 10 min capture, maybe I'll try the video de-rotation later.
Next I turned to Jupiter, and the seeing stayed at pretty good for a while before deteriorating badly from around 5:40. I got a couple of reasonable images with the shadow from Europa crossing the disc, the best of which are shown below, and I've put together an animation of the 7 captures, where you can see how the conditions worsened, probably due the city (and people's central heating units) springing into life. By the end, Jupiter looked like the familiar "jelly on a plate" and so I stopped capturing and packed up.
There's an interesting white spot near the GRS on Jupiter, and the North Temperate Belt/Zone shows a distinct change of colour in the single belt.
For those of you following along from my thread on my new computer, I used the external SD Card to capture about 100 GB of data this morning, and the SD card never missed a beat. I was only capturing planets, so the throughput was low, but it still worked a charm.
Capture details: Celestron Evolution 9.25" SCT @ around f/21 with 2.5x TV PowerMate, ASI 224MC, Saturn @ 100 fps, Jupiter @ 150, Best 3 minute sections of 10 minute captures stacked in AS!3 with 3x drizzle, sharpened in Registax, final touches in Photoshop Elements, Saturn and Jupiter 50% larger than captured, animation smaller to fit on the website.
Edited by Tulloch, 20 June 2021 - 02:49 AM.