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Posts Made By: Walter Hamler

June 11, 2003 06:22 PM Forum: Telescope Making

Alum vs. Resin vs. Fiber tubes - what's best?

Posted By Walter Hamler

Don't know what a Kwiktube is unless you are referring to the cheaper concrete form tubes sold at Home Depot, etc. If so, I have seen them only in 4' lengths and even number ID's.
If there are any light industrial areas near you, see is there are any metal fabricators. I found one near me that was willing to make a rolled aluminium tube at a very reasonable price. His max length however was 60", so that will probably be a factor.
Fiberglass is a good choice, but finding a cheap source is very difficult. I have heard of atm's seeking out reject fiberglass tanks from the water softener industry. Those tend to be pretty thick wall though and therefore pretty heavy.

Walt

June 11, 2003 09:17 PM Forum: Deep Sky Observing

Observing - equipment

Posted By Walter Hamler

Yes, like the first time I saw Omegi Centauri in a 3" f/15 refractor from my bedroom balcony. Couldn't resolve it and wondered what it was, until a friend showed me in his 6" f/4 rft. (OOPS! There I go talking about southern sky objects. Sorry INGE smile.

wALT

June 12, 2003 07:19 PM Forum: Equipment Talk

Ouch!

Posted By Walter Hamler

Wow!! Just missed!!

Walt

June 17, 2003 08:25 PM Forum: Telescope Making

New Book On Telescope Making

Posted By Walter Hamler

Yes, I just got mine also. There are several good offerings in there.

Walt

June 23, 2003 03:53 PM Forum: Telescope Making

first project, secondary questions...

Posted By Walter Hamler

I had a 12.5"/f5.2 that I used a 2.5" diagonal and it worked very well. It was a case of already having the 2.5". Astrosystems had to make me a secondary holder for it as 2.5 is no longer a standard size. So, you may as well go with the 2.6" so the holder won't be an odd ball size.

Walt

June 25, 2003 11:38 AM Forum: Telescope Making

ISO Spider, Crayford outlets......

Posted By Walter Hamler

http://www.freenet.tlh.fl.us/~blombard/

June 25, 2003 05:33 PM Forum: Equipment Talk

Meade's 10" Dob Mirror Cell

Posted By Walter Hamler

There's nothing wrong with plywood for mirror cells up to 12.5" and even bigger with thin mirrors. The key is to ensure they aren't warped and that is aided by sealing them with several coats of polyurethane and then painting flat black. Richard Berry's book on building telescopes has several items made from plywood including mirror cells.

Walt

June 26, 2003 02:27 AM Forum: CCD Imaging and Processing/Solar System

Big Pelican

Posted By Walter Hamler

I made it smaller, looks like he has a black eye. You been beating up on that bird??

June 26, 2003 11:30 AM Forum: Solar System Observing

Mars again 6.26.03

Posted By Walter Hamler

Sol, here is my view this am about 0830UT. I was using my 4" f/10 refractor at 150x and 250x. The contrast was pretty faint, I have probably exagerated here somewhat. I was somewhat surprised at how well Mars withstood magnification. I did have problems with floaters, kept thinking I was seeing white or light areas where there were none.
I can't wait to get some filters I have on order as well as a new 5" refractor (Burgess 1278).
When I grow up I want to be able to draw like you!!

Walt
Central Florida

July 3, 2003 11:58 PM Forum: A Day in the Life of the Administrator

Called and ripped my staff about .....

Posted By Walter Hamler

Herb, THAT sort of writing skill (or lack therof) is one of my pet peeves. I am 61 yrs old, a college grad, and been around the world several times and to both poles. I personally believe this country is headed down a long slippery slope into oblivion simply because the number of truly competent people to run things properly in this US of A is down to a bare minimum right now.
The fact that society accepts and even condones the dumbing down of our kids is beginning to show, and that post is a good example. God help us all!!

Walt