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Captured by
Douglas Rollain

Lion Nebula SH2-132 - RC71

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Posts Made By: Alan Friedman

May 28, 2006 04:39 PM Forum: CCD Imaging and Processing/Solar System

Jupiter 05/28 GRS and Oval BA getting closer!

Posted By Alan Friedman
Hi Chris -

What a glorious image. It is especially remarkable how good the blue channel is - I never get this! I opened your image in Photoshop and did a slight re-registration of the color channels and then prepared a luminance from just red and green to see if it could draw out any additional detail. Not much of a change and the blue is important to the color of the red spot(s).

Congratulations on your wonderful images this apparition and thanks for sharing them here.

best regards -
Alan

May 28, 2006 05:00 PM Forum: CCD Imaging and Processing/Solar System

Sun with Coronado 140 and large DMK firewire

Posted By Alan Friedman
Hi Dodi,

Very nice images! I am guessing that using the big chip on the sun is going to require a lot of processing work to yield a sharp result across the entire field.

In those moments of steady seeing this should be a spectacular solar set-up!

best wishes,
Alan

May 30, 2006 02:08 AM Forum: CCD Imaging and Processing/Solar System

Jupiter May 28, 2006

Posted By Alan Friedman
Hi Jim -

Nice work. I had a chance to watch this Europa/GRS transit too - not sure if the images will be any good, but the event was beautiful to watch.

Alan

June 2, 2006 01:15 PM Forum: CCD Imaging and Processing/Solar System

Another "oldie but goodie", I think!

Posted By Alan Friedman
Great work Luca - I hope the sun brings us some drama again soon!

Alan

June 2, 2006 09:35 PM Forum: CCD Imaging and Processing/Solar System

Atlas, Hercules, Endymion and Burg

Posted By Alan Friedman
Hi Mike -


I'm happy with the result.

And well you should be - a very fine and natural image! Nice to see more of your pictures from Baja - what gorgeous scenery.

best -
Alan

June 4, 2006 03:48 AM Forum: CCD Imaging and Processing/Solar System

Jupiter with shadow in transit

Posted By Alan Friedman
Thanks for your comments!

Robert - I usually capture streams in IR, R, G and B - the total time can run between 4-5 minutes with filter changes with 66ms exposure. I prepare the luminance from R and G streams for several reasons but the rotation seen over this long a time period is a big one. A bigger aperture and faster fps rate would be a big advantage here.

Alan

June 4, 2006 06:27 PM Forum: CCD Imaging and Processing/Solar System

Jupiter June 1, 2006

Posted By Alan Friedman
Hi Jim -

Looking at Christophe Pellier's image from June 2, it looks like the bright disturbance cutting through the SEB just north of the GRS is a rapid change from the week earlier - it's nicely shown on your picture too.

best -
Alan

June 4, 2006 07:58 PM Forum: CCD Imaging and Processing/Solar System

Jupiter with shadow in transit

Posted By Alan Friedman
Another view showing R and IR components to RGB. Interesting to compare to Jim Phillip's images from June 1 - the bright disturbance just north of the GRS on the following side seems to have broken through the northern edge of the SEB during the past week.

Alan

June 10, 2006 05:09 PM Forum: CCD Imaging and Processing/Solar System

Herschel 06-07-06

Posted By Alan Friedman
Hi Wes -

Wasn't it Murphy's third law that set the relationship between air turbulence on a given night and the length of time needed to process the data... went something like

Turbulence * ProcessingTime=&%#!@

I'm happy you put in the time and shared this great result with us.

best -
Alan


June 11, 2006 03:42 PM Forum: CCD Imaging and Processing/Solar System

NOAA 10892 & 10893 in white light

Posted By Alan Friedman
Hi Oliver -

Gorgeous resolution in these shots! Thanks for posting them.

Alan

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