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Posts Made By: Walter Hamler

May 5, 2003 12:03 PM Forum: Equipment Talk

Mirror Recoating Questions

Posted By Walter Hamler
1. Years and years with proper protection.

2. Approx 10.00 per inch of aperature, +/-, plus postage, etc. Some are less, others are more.

3. Absolutely. We just had the 26" mirror recoated for the local college observatory after 25+ years. It looked decent before and fantastic afterwards. This was my first experience with a recoat that you could actually see the difference at the eyepiece before and after. Most of the time the extra 10 to 15 % you gain isn't readily noticible at the eyepiece.

Walt

May 6, 2003 03:32 PM Forum: Deep Sky Observing

It isn't fair....

Posted By Walter Hamler
Well, you could always move......

Walt in "southerly" Florida

May 12, 2003 01:38 PM Forum: Telescope Making

First try with my new scope!!

Posted By Walter Hamler
Nice!! Is that an f/5? I like the tube ring design - allows the eyepiece to be positioned where you need it.

Walt

May 13, 2003 12:04 AM Forum: Equipment Talk

Hurst Synchronous Motors

Posted By Walter Hamler
Well, I have found an answer to my question/problem, sort of... Herbach & Rademan http://www.herbach.com have a 3 rpm motor that is listed as 110 vac/240 vac at a pretty high torque rating. At 27.50 I ordered one and it indeed is high torque and fits my application on a EQ platform perfect. Much better than the Hurst option at close to 80.00!! Since I don't use a drive corrector I don't know if it would respond to varying frequency inputs for speed control, but see no reason why it won't. I runs very quiet and no heat buildup at all. The other motor I tried got VERY hot.

Walt

May 15, 2003 09:07 PM Forum: Deep Sky Observing

Camera on the Moon

Posted By Walter Hamler
I'm pretty sure there are a couple Hasselblads up there, but I believe the film magazines were taken back to Earth. SOoooo, if you could arrainge for the new magazines, I'm sure we could get the folks up there to send some copies back. Or get one of the new digital backs. Then they could download them to the web!
(Have you noticed that the posts here on AM have been getting "kookie" lately? Must be close to Full Moon!)

Walt

May 21, 2003 07:43 PM Forum: Telescope Making

focuser repair help wanted

Posted By Walter Hamler
Small Parts Inc in Miami sell racks and pinions in vearious sizes. Also Reed Tool Supply in Chicago, as well as McMaster-Carr in Atlanta.

Walt

May 22, 2003 05:49 PM Forum: Deep Sky Observing

Star Chart

Posted By Walter Hamler
I have the Deluxe edition, non laminated, black stars on white background. I much prefer it to the field edition, white stars on black background. My field edition stays at home and never goes in the field. So much for the name!

Walt

May 30, 2003 04:13 PM Forum: Pictures of Me and My Telescope and........

28 Years Ago!

Posted By Walter Hamler
This was here earlier, must have been archived/removed.
Someone else said it looked like a few cannons and one round!! I still get a laugh out of that!

Walt

May 31, 2003 12:12 PM Forum: Solar System Observing

Good Bye to Jupiter 5.30.03

Posted By Walter Hamler
Sol, your drawings never cease to amaze me! I just hope my new Burgess 128 will give half as good images as what you are getting with the Synta. As a matter of fact, if it does, I may seriously consider getting their 6" APO when it comes out.

Walt

June 5, 2003 11:51 PM Forum: Telescope Making

Re: Know absolutely nothing

Posted By Walter Hamler
Hands on Optics used to sell old Edmund mirror sets , 4.25" f/4.2, with matching 1.5" diag. for a very nominal price. I bought one set and made a nice little rich field that works nicely on a tripod. If you were going to make the optics instead of buying ready made I would recommend 6" f/5, as that would be easier and insofar as portability, not much bigger in reality. Also, I believe 6" f/5 optics are fairly common at reasonable prices.

Walt

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