Jupiter and Io sequence, 18 Oct

[Cosmic Geoff]

Here is a sequence of images I took of part of the Io transit.  I was interested in a phenomenon I have noted previously - the moon looks bright against dark sky, bright over the planet's limb, but totally disappears by the time the shadow appears.

I don't make any great claims for the imaging - rather it demonstrates how well this current hardware and software configuration performs under adverse conditions - the seeing looked poor, the sky was full of thin cloud, and the extinction, as indicated by lengthened exposure time, was around 66% to 80%.

CPC800, ASI462MC, ADC, 5000 frames, 30% processed in Autostakkert, sharpened in Registax.

 

Edited October 19, 2022 by Cosmic Geoff

[Cosmic Geoff]

Fedele's images for the same event do show the transiting moon very faintly:

 

[Pete Presland]

Very nicely captured.