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Douglas Rollain

Lion Nebula SH2-132 - RC71

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Posts Made By: Alan Friedman

March 14, 2007 02:51 AM Forum: CCD Imaging and Processing/Solar System

Saturn 2007.03.11. - Seeing ok

Posted By Alan Friedman
Hi Oliver -

Excellent! Looks like the green capture is quite good too - have you tried averaging the red and green together for luminance?

best -
Alan

March 14, 2007 10:52 PM Forum: CCD Imaging and Processing/Solar System

Saturn March 9, 2007

Posted By Alan Friedman
Hi Ed -

Nice work! I hope the gaggle of fine saturn images means that spring has arrived. smile

best regards -
Alan


March 14, 2007 10:56 PM Forum: CCD Imaging and Processing/Solar System

Saturn 2007/3/11

Posted By Alan Friedman
Good shot, Richard, with a nice crisp Cassini division. That is becoming elusive, I think... at least it seems so in the eyepiece.

cheers-
Alan

March 15, 2007 03:17 AM Forum: CCD Imaging and Processing/Solar System

Posidonius, Taurus & Plinius mosaic

Posted By Alan Friedman
Hi Stefan - very nicely made mosaic. Looks like you'll have some nice data to work with here.

cheers-
Alan

March 16, 2007 02:20 AM Forum: CCD Imaging and Processing/Solar System

Newbie Saturn - More or leave it? [edited]

Posted By Alan Friedman
That's a lovely saturn. Maybe you can expose for the moons and combine this with your saturn exposure. Would make a dramatic picture at this image scale.

nice work -
Alan

March 19, 2007 02:12 PM Forum: CCD Imaging and Processing/Solar System

Jupiter and Io, 14th March 2007

Posted By Alan Friedman
Also superb - these are among the very best images of Jupiter - congratulations!

Alan

March 20, 2007 09:29 PM Forum: CCD Imaging and Processing/Solar System

Jupiter this morning from South Carolina

Posted By Alan Friedman
Nice work Jim - I'm not sure I can see Jupiter at all from my backyard this year. Thinking of giving a look see tomorrow morning.

cheers-
Alan

March 20, 2007 09:33 PM Forum: CCD Imaging and Processing/Solar System

saturn

Posted By Alan Friedman
Small, but sharp and pretty too. Looking forward to seeing more from your 160.

best -
Alan

March 22, 2007 09:55 PM Forum: CCD Imaging and Processing/Solar System

Saturn 2007/3/13 RGRGB

Posted By Alan Friedman
Hi Richard -

Just beautiful!

R+G makes a very good luminance - I've used that quite a bit for Jupiter. In my set-up it seems hard to get good luminance data through the filters because the exposures must be long, but I did run into a patch of very good seeing the other night grin and was able to get some nice detail at 66 and even 133ms - so I think I will try this too.

The blue north is subdued in color in the picture - it is very close to how saturn appears in my 10" scope. I agree with Stefan - the processing is superb!

best -
Alan


March 22, 2007 10:22 PM Forum: CCD Imaging and Processing/Solar System

Saturn with White Spot

Posted By Alan Friedman
Hi Jim -

What was the time of your image. I was out March 20th too with some very good seeing but haven't found this spot as of yet.

thanks -
Alan

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