Jup Aug 26th, GRS + Wesley Impact + 3hr 40min animation

[Quark]

Hi All,

The weather looked great last night, captured 12 sets of R, G, & B avi's, every 20 min's from 10:40 pm to 2:20 am CST. The seeing was mostly average at about 6/10 but there were periods that were significantly better at about 7.5/10.

I have posted 4 of my RGB's, the 4th one being captured in significantly better seeing. There is heaps of detail to see and the Wesley impact still survives, albeit, very tenuously.

My animation of the whole session represents 3hrs 40 mins of Jupiter's rotation and clearly demonstrates the variability of the seeing.
Note: the animation is just over 1Mb.

http://www.iceinspace.com.au/uploads/20090826JupAnim.gif


As usual all avi's were captured with a 16" F4.5 Newt on a very heavy GEM fitted with an Anssen Technologies dual axis drive & drive corrector and a JMI Moto Focus & Peltier cooler, a DMK 21AU04.AS CCD with an Orion filter wheel and Astronomik Type II RGB filters and a 3x TV Barlow working at 5.3x.

Have not had much sleep with capturing and processing 36 avi's so have cut a few corners with them to get them out of the way before tonights imaging session, which thankfully will be much earlier in the night.

Thanks for looking
Regards
Trevor

[iceman]

Nice work Trevor, that last one is a ripper. Very good indeed.

The Bird Strike is all but dissipated!

[desler]

Have to agree with Mike there Trevor.

Number 4 is just brilliant!


Darren:eyepop:

[RB]

Wonderful work on all of them Trevor, love the anim and #4 is just terrific !

:)

[Rigel003]

Great images, Trevor, and terrific animation. Love the white spots.

[Paul Haese]

Nice work Trevor. Really like the last one.

[Dennis]

Hello, Trevor

That is an astonishing animation! The individual frames are just gorgeous in their smooth tones, colour, details and processing and to see them all put together in such a smooth animation is simply delightful to the eye!

Cheers

Dennis

[Matt Wastell]

Hey Trevor
Awesome series and animation - really pleasing colour and supreme detail - super!

[Quark]

Thanks Mike, yep, pretty pleased with the 4th one, hope to get a better go at Birds remnant tonight.



Thanks very much Darren.



Thanks RB, it was a shame the seeing was not as consistent as it normally is out here, but I was still determined to get enough data for the transit of the GRS.



Thanks very much, glad you liked it.


Thanks Paul, tonight is looking better than last night, at least at this stage. I hope to get a better image of whats left of Birds impact.



Thanks for the very kind words Dennis.



Thanks Matt, its runs for such a short time considering the effort that went into it, but it was worth it.

[RobF]

I just love your long animated sequences Trevor, and plain gobsmacked at how much effort must go into the data processing. :scared:

Way to go! :thumbsup:

[javier alves]

excellent work trevor.
regards :D

[Quark]

Hi All,

Have just recieved a polar projection done by Hans Mettig of Jupos, of my best image from this thread, Aug 26th. It is crisp as and very nicely defines the remnant of the Wesley impact.

For comparison I have attached the original image with the link to its Polar Projection done by Hans Mettig.

http://jupos.org/share/Impact_20090826_1610_Barry.gif

Thanks for looking
Regards
Trevor

[Lester]

Outstanding detail in those images Trevor, good on ya.

What capture rate are you able to use? I tried Jupiter last night with it filling the screen and was still able to get 60fps with the histogram 80% filled. I didn't think such a fast rate was possible with my scope being 14".

Thanks.

[Liz]

Great pics Trevor, and luv the animation :thumbsup::thumbsup:

[Quark]

Thanks Rob, only problem is finding stable seeing for about 4 hrs.



Thanks Javier for your comment from the other side of the world.



Thanks very much Lester. I have experimented extensively with my capture setup, especially for Saturn. My settings vary depending on the object and its altitude.

For Jupiter I use a frame rate of 30fps. Exposure for the red channel of 1/30 th sec, green channel 1/38 th sec and blue channel of 1/30 th sec.
In 40 sec's I get about 1200 to 1300 frames and if the seeing is good then I can easily use 800 to 1000 of those frames in my final stack for each channel.

I set my gain to virtually fill the histogram, I keep the hist at about 250.
At the moment for Jup my gain is around 820 to 825. Bear in mind that this is on a 16" F4.5 Newt. I have tried 60 fps but I think I get better results at 30 fps.



Thanks Liz I appreciate your comments.

[Lester]

Thanks Trevor for all the info; I appreciate it.