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M20 Trifid Nebula in LRGBHa

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Posts Made By: David Simper

March 8, 2004 12:11 AM Forum: Equipment Talk

11" EL handles 1000x

Posted By David Simper
Chas, what eyepiece did you use ?

Last evening, I unpacked the 16" mirror which came from the coater and just let is sit on the table and listened to Beethoven's Moonshine sonata observing the full Moon reflection at ...x1... magnification. It was also an impressive sight :-)

April 17, 2004 01:04 AM Forum: Telescope Making

He wants $10,000 for it.

Posted By David Simper
The Johnsonian GOTO ($3600) w/o the optics seems to be a better deal for me.

David

May 16, 2004 05:30 AM Forum: Equipment Talk

Cobble an Autostar??

Posted By David Simper
Yes. Read
http://groups.yahoo.com/group/RoboScope

D

June 11, 2004 02:10 AM Forum: Equipment Talk

Ellipitcal Flats

Posted By David Simper
Protostar or Antares Optical. Depends whether the size you need is in stock.

July 17, 2004 03:55 PM Forum: Deep Sky Observing

Hola from Santa Cruz, Bolivia

Posted By David Simper
I was concerned about your group reading about the political turmoil on the Peruvian side incl. lynching of the mayor and reading about the unexpected cold weather http://tinyurl.com/5ruke
Looking forward to your impressions.

August 9, 2004 01:32 AM Forum: Telescope Making

Non-Wooden Homemade Dob

Posted By David Simper
Have you seen the Johnsonian Goto Dob ?
www.johnsonian.com

January 21, 2005 03:52 AM Forum: Refractors

Optimization of a fluorite doublet

Posted By David Simper
I think I found the answer - the improvement would be substantial if one can find the glass.
http://groups-beta.google.com/group/sci.astro.amateur/msg/306e15e45918cfa4

February 15, 2005 11:24 PM Forum: Equipment Talk

Machine Shop

Posted By David Simper
Same problem here, have a WO focuser to replace the Vixen one, but how to make an adapter plate. When I went to Preciseparts, it came quite expensive.

May 8, 2005 09:23 PM Forum: Refractors

Refractor on a Stick (Lens testing)

Posted By David Simper
Do they offer a 102/f6 ?

May 31, 2005 06:44 PM Forum: Star Parties

GCSP

Posted By David Simper
As I will arrive on Friday noon, is there any action going Fri PM ? Can the scope be set-up ?

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