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Posts Made By: Don Wyman

December 10, 2005 07:07 PM Forum: Deep Sky Observing

Observations with 18-inch 24th of November

Posted By Don Wyman

And this was an 18" what, exactly?

December 17, 2005 06:03 PM Forum: Coronado-Lunt-DayStar Solar Filters

My new toy is on the way!!

Posted By Don Wyman

I didn't even get an e-mail. It just showed up on the porch today. I got mine.

March 11, 2006 07:42 AM Forum: Telescope Making

I'm In Way Over My Head...Literally!

Posted By Don Wyman

Bill are those Moonlite truss connectors?

October 9, 2006 01:59 PM Forum: Equipment Talk

My New scope!

Posted By Don Wyman

Shame on you Floyd. A refractor? :S

October 21, 2006 07:43 AM Forum: Equipment Talk

Night vision goggles for meteorite viewing?

Posted By Don Wyman

J. Allen Como said:

I just heard from a friend of a friend who has night vision goggles who described some pretty amazing sights while looking at the night sky last night. Has anyone on this forum tried this?

Allen

Meteors are falling through the atmosphere. Meteorites have already hit the ground.

October 26, 2006 02:25 PM Forum: Equipment Talk

Barlowed laser Collimation

Posted By Don Wyman

Yes, a Paracorr has a 1.5X magnification factor.

February 22, 2007 06:47 PM Forum: Reflectors

New Moderator!

Posted By Don Wyman

Darn, and I was just getting to enjoy all the renewed activity in the Dobsonian Forum.
cwy

August 9, 2007 01:50 PM Forum: Refractors

Re: Refractory history question

Posted By Don Wyman

Greg Nowell said:

Here's a picture of Lord Rosse's secondary mirrors. (I was at Birr Castle last week). So when his mirrors were fresh he was at roughly 50% light throughput, but apparently this would rapidly degrade to 16%. regards Greg N

Greg, the card in the photo clearly states that these were secondaries for other telescopes, not the 72" which didn't use a secondary.

Don Wyman