Here's an animation of Europa occulting Ganymede on the morning of May 9 (May 8 18:02 UTC or thereabouts).
The seeing was not very good, and so I was only able to use 250/1200 raw frames for each final frame in the animation. You can see that the seeing improves a lot toward the end of the sequence.
Capture details:
Astrodon I-Series filter (Red)
PGR Dragonfly2 camera @ 38 fps
TV 5x powermate @ 7.7x on LEXX
Images resampled to 300% before processing
Each animation frame is approx 31 seconds of raw data (1200 raw frames) and the best 250 as chosen by ninox were stacked and processed in registax.
A triumph, Anthony, nothing less. I can only imagine what you might achieve with a fraction of NASA's budget. And LEXX will belong in a science museum one day. Congratulations.
Dave, I'm working on the light curve bit now, not having done this before I'm not entirely sure what the right thing is to do here... I was thinking of simply accumulating all the light in each frame and using that as the "value" for each frame. Plotting that will clearly show the dropoff during the event, and the relative values between frames should be ok. I have no idea what sort of "absolute" values I could produce as nothing is calibrated.
Dave, here's my first go at a light curve, not sure what it means or if it's useful.. this is just the total flux in each of the animation frames, you can see how much the seeing variations cause havok...
Dave, ignore the graph above, I've found a much better solution and will post a new version later. I've added simple flux accumulation to ninox, now it can spit out a csv from all the raw frames - all 21000 of them :-)
Hi Anthony, The more samples, the smoother the curve, Can give a reference time? To the nearest second is OK for these events. Can you synchronise your PC clock to a time server. Dimension4 works well.
