No, I don't. I'll see about putting one up. See http://www.ocastronomers.org/ almost every photo (except of the moon) is done like (or similar to) this.
Regards, Bob... -------------------------------------------------------- "Life isn't like a box of chocolates . . it's more like a jar of jalapenos. What you do today, might burn your butt tomorrow." ----- Original Message ----- From: "Cory Papenfuss" <[EMAIL PROTECTED]> To: "Pentax-Discuss Mail List" <pdml@pdml.net> Sent: Tuesday, September 04, 2007 5:28 PM Subject: Re: First Try with Astro Photography > Do you have an example of such an elaborate photograph somewhere > online? Sounds pretty nifty. > > -Cory > > On Tue, 4 Sep 2007, Bob Blakely wrote: > >> Interesting. The chromatic aberration produced by the lens can clearly be >> seen. This would not have been evident if the moon were properly >> exposed - >> but then you wouldn't have recorded any of the sisters. >> >> For stars, nebulae, etc. (not the moon) at high magnification: >> >> The following requires a properly aligned equatorial mount with sidereal >> tracking, a ref converter with as much magnification as you can get and >> the >> entire night in a dark area. >> >> I: >> put on a green filter, focus, take many exposures, >> put on a red filter, focus, take many exposures, >> put on a blue filter, focus, take many exposures, >> >> then I triple size each of them. >> then I register & stack each color separately, >> then I import them into Photoshop, >> >> then I zero the red & the blue in the green image, >> then I zero the green & the blue in the red image, >> then I zero the red & the green in the blue image, >> I do this because the filters aren't perfect... >> Then I combine them, >> >> Then I balance them for white on the brightest star - unless I want to >> accentuate something. >> >> It's a lot of work, takes an unbelievable amount of time, but carefully >> done, it kills the chromatic aberration, reduces noise, sharpens the >> image >> and brings out things that would not otherwise be seen. >> >> There's probably a much better way to do this, and astronomers out there >> can >> probably help, but this does work. >> >> Regards, >> Bob... >> -------------------------------------------------------- >> "Life isn't like a box of chocolates . . >> it's more like a jar of jalapenos. >> What you do today, might burn your butt tomorrow." >> >> ----- Original Message ----- >> From: "Beaker" <[EMAIL PROTECTED]> >> >> >>> Hi Group- >>> >>> Took a stab at astrophotography last night. >>> First try overexposed the moon, but got the Pleiades. Then found a >>> good exposure for the moon. >>> Stopped while I was still ahead... >>> >>> It was prime focus with a Stellarvue AT1010. (80 mm, f/6 acromat, and >>> Pentax K100D) >>> >>> http://www.flickr.com/photos/[EMAIL PROTECTED]/1314752257/in/ >>> set-72157594414463840/ >> >> >> > > -- > > ************************************************************************* > * Cory Papenfuss, Ph.D., PPSEL-IA * > * Electrical Engineering * > * Virginia Polytechnic Institute and State University * > ************************************************************************* > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
