Jupiter + Io Morning of April 30th

[Quark]

Hi All,
Been so much happening on Saturn that I have only just finished processing my Jupiter avi's from the morning of April 30th.

The seeing was about 6/10, no where near as good as it was before midnight for the Titan shadow transit.

All R, G & B channels were 45 sec captures at 30 fps and 1/30th sec exposure.

The only descent Jupiter images I have seen this apparition were from Lester but this is my best effort to date.

Thanks for looking
Regards
Trevor

[davidpretorius]

Well done Trevor. Yes Lesters were very nice and Stefan Buda has just processed a very good one too.

What is your setup ie scope / camera....( excuse my ignorance :) )

[Kevnool]

Great image Trev.
Theres plenty of detail there.
Cheers Kev.

[Lester]

Nice image there Trevor. The next good conditions must be getting closer. And then I will not be able to compete with your setup.

[Quark]

Thanks Lester, some of your earlier images of Jupiter, this apparition, were outstanding. I think you underestimate your ability and equipment. I think you have been producing some top stuff, it really does depend on the seeing.



Thanks Kev



Thanks David, I have a 16" F4.5 Newt that is highly modified. It is on a German Equatorial mount, designed and built by me. The scope is in a two storey observatory, designed and built by me in my backyard.

The scope has a 27 point primary mirror cell and a JMI Moto Focus.
The mount has an Annsen Technologies dual axis drive and drive corrector by Peter Melander. Recently I built a Peltier cooling system for my primary mirror. I posted a detailed report on that on the ATM forum, I think you posted a comment on that thread.

I use a DMK 21AU04 CCD, an Orion filter wheel with Astronomic RGB filters.

[iceman]

Looking nice, Trev. A fine image. Io looks 3D on the limb.

Probably could increase contrast on the disk a little more by dropping the gamma or curves.

I've captured that same region this morning.

[iceman]

Trev
Here's a 2 minute process in photoshop.

Curves, saturation, despeckle, a bit of high pass filter, and moved the red channel up 1 pixel (it was misaligned).

It looks better to me, but it could be personal preference. What do you think?

[Quark]

Thanks Mike, definitely an improvement and I do appreciate your input.
Of late I have not been using photoshop, finishing my processing regime in Astra Image, thanks for reminding me of its virtues.

Regards
Trevor

[Quark]

Hi again Mike,

Just reprocessed the same image, as I normally would, then finished it off in CS4. Have attached the original and post CS4 version.
What do you think?

Cheers
Trevor

[iceman]

Definite improvement, Trevor!

Nice work. Io looks heaps better.