Jupiter has a pimple, 30/04

[iceman]

Hi all.

The jetstream has sat over the top of me for the last 3-4 weeks, haven't had any (what I'd call) good images for a month! What's made it even more frustrating, is that the weather has been clear most nights!

I'd go out, put an eyepiece in, jelly. Go back to bed. Some nights i'd even try with the laptop, jelly, delete avi, go back to bed.

Last night at least it finally reached "average" seeing. I was able to capture 8 avi's with ganymede coming out from behind Jupiter, before clouds passed over.

Happy to capture some minor detail on ganymede, and some nice spots in the STZ and STB. Ganymede was aligned, stacked and processed separately, and combined with the planet image in photoshop.

Comments welcome.

[ving]

dang, i only got cloud mike. lucky bugger! :)
nice image for average seeing :)

[davidpretorius]

nice work on ganymede, it is also intersesting the ringing effect from bad seeing. There would be no exposure issues from your capture technique, just with the planet not keeping nice and still and then no doubt wavelets and deconvolution helping to bring that out.

still these are nice pics.

[iceman]

Thanks, and yeh - noticed the same thing myself with the onion rings lately.

I'm not in agreeance with Asi/Rob, that the onion rings are a combination of exposure AND seeing problems.

[Lester]

Excellent shooting Mike, The second frame looks to me like Ganymede is casting a shadow, I realise it can't when comming from behind Jupiter. Is that small dark bit to do with you processing Ganymede seperately?

[iceman]

Thanks Lester.. it's a processing artifact introduced by Registax. It was there in the planet processing, so it's not introduced by doing ganymede later.

I could probably reprocess using a different alignment point area/size to see if that fixes it, if I could be bothered :)

[Robert_T]

Hey Mike, very satisfying shots for you and worth the extra effort on Ganymede with hints of surface detail coming through. As always your image scale is great and the detail in the equatorial regions impressive.

See if you can push that Jetstream south instead of north as it's been cruddy up here for ages... I'm sure Davo won't mind a bit of Jetstream :P ;)

cheers,