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Lawrence Parchman

Eastern Veil Nebula

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Posts Made By: david ulbrick

August 13, 2003 05:48 AM Forum: Equipment Talk

Re: Ignored By Seller

Posted By david ulbrick
Some people I know are having a hell of a time with the virus going through their computer at the moment.

September 6, 2003 04:11 AM Forum: Equipment Talk

Anyone use a Vixen VC200L ?

Posted By david ulbrick
Any one use it for webcam astro photography ?

October 24, 2003 10:16 PM Forum: CCD Imaging and Processing/Solar System

Mystery spot on Jupiter ?

Posted By david ulbrick
Have any of you guys seen this,any ideas ?
http://story.news.yahoo.com/news?tmpl=story&cid=96&e=4&u=/space/20031023/sc_space/mysteryspotonjupiterbafflesastronomers

August 5, 2007 02:18 AM Forum: Refractors

102mm lens cell?

Posted By david ulbrick
Can someone help me find an adjustable 102mm lens cell for me?
I can get a good Achro doublet, just need a cell.
cheers Dave (Aust)

May 7, 2003 08:00 AM Forum: Equipment Talk

Apochromatic and Achromatic... ???

Posted By david ulbrick
This is a good read for you. all the best

http://www.dpreview.com/learn/Glossary/Optical/Chromatic_Aberrations_01.htm

May 9, 2003 12:31 PM Forum: Equipment Talk

Info on an old telescope. Edmonton Scientific

Posted By david ulbrick
http://home.att.net/~telescopebluebook/reflector/edmund.htm

May 30, 2003 02:05 AM Forum: Telescope Making

Mirror silvering.......anyone?

Posted By david ulbrick
In Australia it is not as simple as sending a mirror away for a few days to be Al coated. I handle chemicals often with my job.
Idea,...I sometimes repair the Al sputtering machines that Al coat CD's,so I thought of removing the spindle from the 8" vaccume tank,putting the 6" mirror in,a trace of argon then give it a sputter of Al.
I would have to watch the coat thickness but I can measure the reflectance and scatter to get it right.
I can try several times,just re strip the mirror if it comes out with a poor reflectance reading.

July 28, 2003 12:52 PM Forum: Deep Sky Observing

Milky Way view...first time in about 10 years!!!

Posted By david ulbrick
Two years ago I stayed in a small house on the most southern tip of mainland Australia. It was DARK ! ,miles away from any lights. The trouble was there was so many stars I couldn;t make out the constelations or planets.
It was awsome. I had my 20x70 bino's with me,and I will never forget that night.

August 14, 2003 01:29 AM Forum: Equipment Talk

Anyone else have a problem w/the pic in this add?

Posted By david ulbrick
LOL,jeez

August 20, 2003 04:26 AM Forum: CCD Imaging and Processing/Solar System

Moon - Olympus Digicam

Posted By david ulbrick
Some nice detail on that !

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