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  #1  
Old 23-02-2006, 12:02 PM
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iceman (Mike)
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Saturn from last night (my best!)

Hi guys.

Was surprised to see the clouds clearing last night, so I set the scope up and started imaging at around 10pm. The seeing looked great through the eyepiece, Saturn looked really lovely and the banding on the globe and the crepe ring were really nice to look at.

I setup the laptop to take a few quick avi's (took 5 in total), and left the scope out for Jupiter. I checked the radar, no rain in sight and none forecasted. Got up at 4:15am this morning, and it had been raining. My scope, base, everything was wet Clouds as well, so no Jupiter.

Anyway, back to Saturn.. the transparency was poor as usual, I had gain at 75% (at 10fps) just to get a level of 120 on the white meter.

But I captured enough frames (3500 in total), so I was able to smooth it out.

Attached are the results of my processing - the left image is just the red channel after the normal processing routine (split into rgb, 500 red frames stacked in registax, medium wavelets, LR deconvolution in AstraImage). The right image is the re-combined RGB image.

I'm really happy with the red channel - it's smooth, sharp and has the CD all the way around. No storm unfortunately. The RGB image is also my best I think, however the blue channel looks really really nasty and i'm sure it didn't help at all.

Interestingly enough, I had gamma set low for these captures, and while it means the crepe ring is barely visible, it helped bring out banding on the disc. So it seems to be a trade off with gamma/brightness, versues capturing the crepe ring and getting banding on the globe. At least in my case.

Saturn was 31° altitude at this time.

Comments welcome.
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Click for full-size image (20060222-saturn.jpg)
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  #2  
Old 23-02-2006, 01:28 PM
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Robert_T
aiming for 2nd Halley's

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Beautiful Mike , even moreso given it was only 30deg above the horizon... I get a few more degrees up here in Brissy!

The red channel is excellent. For the RGB on my work CRT it has a slight greenish tinge, but very pleasing nonetheless.

Well done!
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  #3  
Old 23-02-2006, 02:11 PM
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Robby
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Lovely Mike....
Hope you had some cover on the scope!
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  #4  
Old 23-02-2006, 02:31 PM
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iceman (Mike)
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Nope All wet! The scope was pointed down, so nothing on the mirror but i'm sure my base will start rooting any day now
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  #5  
Old 23-02-2006, 03:15 PM
Dennis
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Agghh - so sorry to hear about the 'scope Mike. What a bitter-sweet event; your best Saturn then this disaster.

If it’s any consolation, the Saturn image is fantastic, huge image scale with tremendous details in the bands on the disc, not to mention that big, black gap of the Cassini Division going all the way around the visible ring system.

Cheers

Dennis
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  #6  
Old 23-02-2006, 04:05 PM
bird (Anthony Wesley)
Cyberdemon

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Nice work one again Mike! I was out last night also, but the overnight cloud defeated me again.

Bird
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  #7  
Old 23-02-2006, 04:49 PM
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Striker (Tony)
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Very nice Mike,

Come on Mike tell us the truth...this was all in your master plan....set the scope up on known rainy night...tell the wife it's stuffed now being wet...Mike buys bigger and better scope.

I like you thinking....great job.
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  #8  
Old 23-02-2006, 05:13 PM
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davidpretorius
lots of eyes on you!

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now we are talking mike well done!!!

Jupiter and Saturn done to a world class std!!!

Won't stop you from trying to better it I bet!!

The top rhs of the globe has lovely round shape, top left hand side has that flat zone that sometimes appears, can you remember what you aligned on. I had experimented with a 64 x 64 alignment on a CD section one time????

Can't remember if it had an effect on the globe though???
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