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RICHARD COFER

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Posts Made By: Bernard Kean

May 1, 2006 12:04 PM Forum: Telescope Making

Plastic gears!!

Posted By Bernard Kean
Jon
Try here, http://www.sdp-si.com/eStore/CoverPg/Gears.htm , I've never used them but they seem to have a lot of gears.
Buck

May 15, 2006 12:28 PM Forum: Refractors

Stellarvue SV5S or TEC 140 or other?

Posted By Bernard Kean
Hi Don
I'll leave the scope questions for others, however if you have any photographic plans then you most definitely will want the Gemini GoTo on the G11. Gemini Level 4 just came out a few weeks ago and from all reports I've read it is excellent. I think the bugs have been worked out of the drivers from all the various associated programs that can work with Gemini have been corrected, and the very experienced users are very happy.
Buck

May 23, 2006 10:28 PM Forum: Telescope Making

Retapping stripped threads

Posted By Bernard Kean
Kevin
According to a Starrett chart a M3 screw takes a 2.5mm or (.984) drill so you could try a 6-32 screw which takes #36 drill (.1065). This is close so the stripped hole may be large enough already or could be a bit too big. If it is, than an 8-32 screw should work which takes a #29 drill (.136).
The M4 screw takes a 3.3mm drill (.1299) so a 10-32 screw would take a #21 drill (.159).
The move from M3 to M4 and the M4 to M5 would be a bit closer in sizes but if you don't have them then the 6-32 or 8-32 and the 10-32 are the closest standard sizes
Hope this helps
Buck

May 24, 2006 01:12 PM Forum: Equipment Talk

Counter weight shaft length

Posted By Bernard Kean
Adam
The Over All Length is 15.5" with 1" of tread to the shoulder where it bottoms out to the mount. Can't help with the 21# weight.
Hope this helps
Buck

June 3, 2006 02:48 PM Forum: Equipment Talk

Marring That Beautiful Chrome Drawtube

Posted By Bernard Kean
Hi Dave
I have a TV101 and mine drifts back with a load. With my binoviewer in it I have to tighten it down pretty good but it hasn't left marks in the draw tube...yet.
Buck

June 5, 2006 08:03 PM Forum: TeleVue

Marring the Chrome draw tube

Posted By Bernard Kean
Dave
I replied to this on the 3rd but it doesn't seem to be on the list , yet it is under my profile.....strange. Anyway here it is again.

Hi Dave
I have a TV101 and mine drifts back with a load. With my binoviewer in it I have to tighten it down pretty good but it hasn't left marks in the draw tube...yet.
Buck

June 7, 2006 10:57 PM Forum: Equipment Talk

'firewire' webcams?

Posted By Bernard Kean
Dave
A quick Google search turned up more hits than I could start to read but here is a comparison review I found.

http://www.mindspring.com/~astro4565/cameracomparison.html

I never did find anything about them retail.
Hope this helps
Buck




June 8, 2006 12:25 PM Forum: Equipment Talk

My peepers have degraded, need advice

Posted By Bernard Kean
Well Allen, welcome to the club and don't feel alone. I remember a discussion about this quit some time ago on one of the forums and IIRC the issue is that the solution dilates the pupil much larger than where it normally will open and interferes with the focusing of the eye. While at first it sounds like a good idea but in practice it will mess up a nights viewing.
Buck

June 11, 2006 02:18 AM Forum: Telescope Making

Blackening Aluminum

Posted By Bernard Kean
Hi Stuart
If you are talking about Anodizing try this sight for kits and colors.
http://www.focuser.com/atm/anodize/anodize.html
Hope this helps
Buck

June 14, 2006 10:50 AM Forum: Eyepieces

exit pupil

Posted By Bernard Kean
Hi Dennis
Here is a link to an article by Al Nager from the Televue site that explains it very well. About half way into it is where the exit pupil starts to come into play but the entire article is a good read. It also expels some myths.

http://www.televue.com/engine/page.asp?ID=140

Hope this helps
Buck



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