Jupiter 16/2/2005

[bird]

I picked the best run from the 16th and reprocessed it more carefully. There are 750 frames each of red,green,blue and I processed them through registax in batches of 250 to get 3 masters for each colour. These were recombined in Astra Image (reducing noise) and captions added in the Gimp.

I really like the batch-processing approach because it gives me the ability to do some "real" noise reduction right at the end of the processing chain, so I can push some of the intermediate steps a bit harder.

10" f/6 newt @ 6000mm FL
fire-i mono camera @ 25fps.
1.3x resampled image

With sufficient averted imagination the GRS is still *just* visible on the south-west limb (bottom left).

edit: original image replaced with a slightly better one, from a few minutes later, so GRS probably not visible any more.

regards, Bird

[iceman]

Just great, the 1.3x resampling makes it look much bigger and it doesn't look like you lost any detail!

Wonderful image.

[ving]

yup, nice cloud fromations there. well done.:)

[Starkler]

Who needs hubble?

Very nice :)

[Exfso]

I agree, who needs Hubble, they are excellent. I think Bird should start a tutorial on how to do it.

:astron:

[[1ponders]]

You've pulled in some very clear colour variation and detail bird. :cool2: So if my rudimentary calculations are correct the you were imaging at f/60. Anthony, what did you use to boost your FL? Is the darkening of the limbs and the polar regions brought about by the processing or is it an aspect of the focal length you were using?

[iceman]

He's got an f/6 scope, I think he images at f/30. And I think he uses a 4x powermate.

[bird]

Yep, imaging at 6000mm FL with a 10" mirror, comes to f/30. The mirror is 1500mm native, boosted with a 4x powermate.

For my current camera f/30 is about as dim a I can push it through these filters. In the next few months I'm sorta hoping to upgrade to the new DMK-21BF04 from www.theimagingsource.com which should get me some more sensitivity.

re: a tutorial, well, it's a good idea, except that there's so many different things to talk about... seriously, 90% (maybe 95%) of the secret is to get good quality raw images, and that means paying close attention to physical stuff like collimation, temperature of the scope and mirror, good seeing conditions, steady tracking etc. The software part is not really the hard bit.

Bird

[Striker]

I agree.......No longer will it be called Hubble.....from now on we call it Bird.......nice work.

[rumples riot]

Wow, Anthony, very good stuff, need to get that observatory of mine done.

[ving]

well if no one want hubble I'll have it! :)