Jupiter 2nd July from tassie

[davidpretorius]

Hi all,

Seeing was maybe 6 or 7/10 (pickering)

Only got two runs due to clouds. Sorted out recent cross hatching in the blue channel by selecting horizontal interlacing in registax.

Adam's rgb split and ppmcentre front end worked beautifully.

[gbeal]

Nice Davo, send some of that seeing over please. Nothing but 2-3/10 for me for the last week, frustration is setting in.

[Astroman]

Nice one dave, maybe just a slighty hint of x-hatching.

[iceman]

I like it Dave. haven't seen the horizontal interlacing option before! Must pay more attention!

Do you know where it's coming from though (the crosshatching)?

You're due for another great night Dave, i'm sure it'll come very soon.

Nice colours and detail. Interesting patterns in the festoons!

[Lester]

Nice one again David,

amazed at how even your three colour channels are.

[davidpretorius]

the first image is the blue channel without the horizontal interlace checked and the second is with it on.

Also I have not rotated the image in photoshop, cos that seems to introduce artifacts as well

[Dennis]

Hi Dave

Yikes - those are really great Jupiter images; I'd forgotten how good it can get. You've done a great job - thanks for posting them so quickly too.

Cheers

Dennis

[iceman]

Dave I make sure I rotate the camera so the belts are horizontal, before I start capturing. Only takes less than a minute to get it right. Because of field rotation it needs rotating every time I reset the platform.

[asimov]

I do what Mike does. As you have found out to rotate in software will degrade the image unless done in 90 deg increments (not 100% of cases though)

[davidpretorius]

Thanks guys,

I have been thinking about rotating camera, but am a little fazed about the constant left right, up down movement I have to do with my alt/az dob driver hand guider.

Each time it will be different, left will be right, right will be up, up will be 45% up and right and so on..... but then I am a tough little aussie who should meet the obstacle head on!!!

[iceman]

ah yes, that's an issue for me when I have to nudge my dob to get the planet back in the FOV. After a few hours i'm pulling and pushing in different directions.

But once it's back in the FOV and horizontal again, I use the speed adjustment to keep it in the FOV, as long as it's not drifting up and down which is a real pain.

[davidpretorius]

someone should invent something that only has one degree of movement....you know....like maybe tilt it to celestial equator and then just let it turn with the stars..

You could even put this new contraption on three legs and call it a mount of some sorts.

maybe a celestial equator mount or a maybe just an equatorial mount for short.

I wonder why someone hasn't suggested this piece of equipment before....:whistle:

now that would fix all my problems!

[Lester]

GEQ mount

[davidpretorius]

great easy mount!

i like that one!!!

i do remember asimov many months ago, along with houghy and 1ponders saying to me.

get an eq ya dobber!!!

[ving]

great image davey wavey :)

and yeah, go get an EQ :P

[asimov]

Ummm, no Dave I think it was something more like "Get a EQ mount you silly young bugga!!!"

[Lester]

Hi Dave,

Many years ago probabley before you arived, they were all known as German Equatorial mounts. Don't know why, idea may have originated in Germany.

[davidpretorius]

>>:d<<

[Rigel003]

David,
I've been grappling with the same problem of late. My SCT is in altz set-up and the planet needs regular nudging to keep it on the chip. If you rotate the camera you need oblique adjustments, the altitude motor runs less freely than the altaz and it's especially complicated when you're viewing near the zenith for an altaz mount. I've been giving uip and rotating in Photoshop.

BTW, great photo with fantastic belt detail.

Graeme

[davidpretorius]

Thanks Graeme,

I am sure there is a mathematical reason, but Photoshop seems to add artifacts or lose detail in rotating smaller angles???

I can still hear that eq guys sniggering and it has been 10 hours since i first posted this thread......

[gbeal]

Sniggering? You bet, get a GEM, I did.

[RB]

I thought they were called gems because they worked so well ????

Ah well you live and learn :P :P :P :rofl:

Fantastic image David, to my eyes it's perfect.
Well done mate.

[Lester]

David,

On the serious side you take wonderful images of Jupiter.

On the other side,:rofl: :rofl: :rofl: :rofl: :rofl: :rofl: :rofl: :rofl:

[hevelsky]

Great Image David !!!!!! :thumbsup: :thumbsup: