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Posts Made By: David Pitre

May 23, 2006 08:44 PM Forum: Equipment Talk

Artificial star questions

Posted By David Pitre
I'm getting ready to make an artificial star using a flashlight (Mini Mag) and thin metal preforated with a pin.
I have a couple of questions for those with experience:

Should star tests and collimation be done at night with such a set-up, or will this work in daylight as well?

What is a good distance to set the scope for the star?
I'm using this for a 9.25" SCT f/10.

If I stack sheets of the metal and preforate them on a hard surface to get sheets with holes of different diameters, how do I know which is optimal? Trial and error?

David

June 21, 2006 07:49 PM Forum: Equipment Talk

While we are talking Star test... Can you explain

Posted By David Pitre
My 9.24" SCT shows a star test with an exceptionaly bright first diffraction ring. Outside of focus it it sharply defined. Inside of focus it it large and blurred.
Can anyone comment on this?

July 12, 2006 08:14 PM Forum: Eyepieces

Meade UWA 6.7 and 8.8 questions

Posted By David Pitre
I was using my 14 UWA last night on my C9.25" and was stunned by how good it is. Sharp like I'd expect from an ortho.
Do the other old series UWAs compare, or is this the best of the bunch?
I also use a 80mm f/7 apo refractor.

David

December 19, 2006 05:31 PM Forum: Takahashi

How do you mount your OTA to your Teegul?

Posted By David Pitre
I'm assuming most people who have Tak refractors and a Teegul use the Tak tube holder mounted directly to the Teegul.
I'm wanting to use saddle/plate/ring system for mounting my FS102 to my Teegul.
Is a Losmandy G11 saddle and plate overkill?
I really want it solid, but don't want to spend money where I don't have to.

December 21, 2006 03:54 PM Forum: Takahashi

Tak mount plate hole spacing

Posted By David Pitre
Do all takahashi mounts present and past ( EM11, EM10, EM200.....)
use the same hole diameter and spacing for saddle plates.
i.e. 8mm x 35mm

January 11, 2007 08:46 PM Forum: Takahashi

Extension for visual use of FS-102NSV

Posted By David Pitre
I just bought an FS-102NSV and am wondering how long a 2" diameter extension I need to use most all EPs in my 2" diagonal. Is 2X2 about right ?
I don't do any imaging or binos.
David

February 9, 2007 02:44 PM Forum: Equipment Talk

Advice for shipping a SCT back to Celestron?

Posted By David Pitre
I need to ship my 9.25" Nexstar back to Celestron for repairs (under warranty) and am nervous.

Any advice as to which shipper, insurance....
I have the original packaging.

February 26, 2007 01:53 PM Forum: Takahashi

6x30 Finder TFOV

Posted By David Pitre
I'm wondering about the TFOV for the Tak 6x30 finderscope.
Does anyone know?

April 25, 2007 09:07 PM Forum: Eyepieces

Eyepiece end caps

Posted By David Pitre
I'm looking for a source for 1 1/4" end caps.
I really don't like the rubber ones with the nipple, though. With these the eyepiece doesn't stand up with the cap on. Seems all the stores are only carrying this rubber nipple kind.
Any sources on the "old school" style?

April 30, 2007 06:48 PM Forum: Eyepieces

Filter threads and glare

Posted By David Pitre
A number of my eyepieces have bright chrome exposed on the filter threads. Doesn't this create reflections?
If so, is there something that can darken them without causing buildup on the threads that will make filters more difficult to put on/ take off ?

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