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Captured by
RICHARD COFER

VdB 141 Ghost Nebula

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Posts Made By: Dan Petersen

August 9, 2008 11:35 PM Forum: CCD Imaging and Processing/Solar System

Saturn March 27, 2007

Posted By Dan Petersen
Hi Paul:

That looks fantastic, it may be your best! As far as the date goes, it's all just mind over matter, nobody here minds so it doesn't matter. 8O I sound like Yogi Berra. :S

Take it easy, Dan

August 19, 2008 02:18 AM Forum: CCD Imaging and Processing/Solar System

Jupe Aug 4th

Posted By Dan Petersen
Hi Henry:

Very interesting shot, you recorded plenty of detail, congratulations! It's not fair though, imaging from the 14th floor places you closer to Jupiter.

Cheers, Dan grin

August 23, 2008 06:41 PM Forum: CCD Imaging and Processing/Solar System

Plato....again!

Posted By Dan Petersen
Hi Mike, incredible resolution, well done! Regards, Dan smile

August 27, 2008 03:21 AM Forum: CCD Imaging and Processing/Solar System

Jupiter with a SV-102ED

Posted By Dan Petersen
Hi John, very good detail, well done! Regards, Dan smile

August 30, 2008 05:40 PM Forum: CCD Imaging and Processing/Solar System

Tycho 08-23-08

Posted By Dan Petersen
Hi Wes, you recorded a ton of detail there, congrats! The Moon is actually a difficult imaging target, because of the terminators tremendous range in light levels (0-10). Your exposures must be very fast? Regards, Dan 8)

September 7, 2008 11:49 PM Forum: CCD Imaging and Processing/Solar System

Jupiter Time Limit

Posted By Dan Petersen
Hi Kevin:

Most planetary imagers will tell you that two minutes is the maximum run time for Jupiter. However, RegiStax v4 and a few other image processing software packages have the ability to compensate for rotational blurring on Jupiter, out to the "three" minute mark! Any misalignments will occur near the planets darkened limb, where it's not detectable. The best mono-cam imagers routinely do about one minute per color filter, that's a 3 minute avi. I think 10fps for 2 1/2 to 3 minutes will give a sharper image than 15fps (too much compression), and it still provides you with 1,500 - 1,800 frames for processing a smooth composite. Have fun experimenting!

Cheers, Dan 8)

PS: Check out Anthony Wesley's website, and see what it's all about at, http://www.acquerra.com.au/astro

September 18, 2008 12:16 AM Forum: CCD Imaging and Processing/Solar System

Jupiter Sept 15 with Io's shadow

Posted By Dan Petersen
Hi Paul:

Well done, Io- appears to be resolved! It would be interesting to see what a 2000 - 2500 frame stack (with some Richardson-Lucy deconvolution applied) would look like for an IR/RGB composite?

Take it easy, Dan 8)


September 19, 2008 11:34 PM Forum: CCD Imaging and Processing/Solar System

Saturn from WSP

Posted By Dan Petersen
Hi John:

What a beautiful composite, you really captured Saturn's true glory - congratulations! I'm sure that photo brings back great memories of the '06 WSP, it reminds me why this ringed masterpiece is still my favorite telescopic target. I already miss those rings, when they do return the planet will be too far south for high resolution imaging, unless you live in the Florida Keys. I am planning to attend (WSP '09) the 25th year (8 day) anniversary party, hope to see you there!

Regards, Dan

September 22, 2008 01:23 AM Forum: CCD Imaging and Processing/Solar System

Jupiter September 16

Posted By Dan Petersen
Hi Paul, well done! I like the 2:33 shot the best, it's; bright, clear, and very smooth - looks like about 4,000 frames. 8O cheers, Dan

September 24, 2008 03:41 AM Forum: CCD Imaging and Processing/Solar System

Jupiter & Transit

Posted By Dan Petersen
Hi Kevin, good job capturing this evenings grand gathering. I was observing Jupiter while you were imaging it. The view was spectacular, Ganymede and Callisto looked like a binary star about to collide into Jupiter's northeastern limb. It was truly a rare alignment. Thanks for posting, Dan

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