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Posts Made By: Kwang Lee

December 3, 2002 05:54 AM Forum: Equipment Talk

GM-8 or CI-700 ???

Posted By Kwang Lee
Assuming 20 lb of ota, ccd, etc, what's the better
astrophoto mount? The Losmandy GM-8 or CI-700 ?


December 8, 2002 06:11 AM Forum: Equipment Talk

TMB Achromat any good?

Posted By Kwang Lee
OK...I'm looking at the 152mm Achromat that
APM scopes is advertising. Has anyone used
a TMB achromat? Is it significantly better
than a Synta/Celestron 6" refractor? Or for
that matter, could it be better than a
a Meade AR6 ???

Appreciate any experiences or leads...

K

March 26, 2003 04:57 AM Forum: Equipment Talk

Inexpensive Case for C11?

Posted By Kwang Lee
Hi

Does anyone know where I can purchase a treasure chest type
of case/enclosure for a C11 OTA? I'm looking for something
inexpensive.

I visited Target and Kmart, and their storage chests
were not "deep" enough.

Thanks for any leads.

Kwang

April 12, 2003 12:11 AM Forum: Equipment Talk

D&G vs Meade APO ???

Posted By Kwang Lee

I'm considering a 5" refractor:

Looking at a 5" D&G F/12 vs. 5" Meade ED APO

Does anyone have experience with both of these
scopes?

Thanks

Kwang



April 28, 2003 03:33 AM Forum: Equipment Talk

Homemade CCD filter wheel ??

Posted By Kwang Lee

Has anyone made their own CCD filter wheel?

Or know of any websites that describe such a project?

I know I can purchase a relatively inexpensive wheel from
Miown, but I was thinking about making one from scratch.

Thanks in advance.

Kwang

May 3, 2003 08:11 PM Forum: Telescope Making

Tube Material Question

Posted By Kwang Lee
Anyone use tubes from Destiny?

They have tubes made of "thermoplastic resin"
and I was wondering how this material compares with
aluminum?

Kwang

May 4, 2003 07:56 PM Forum: Telescope Making

8" F/5 question...

Posted By Kwang Lee
Hi,

I'm planning to build a 8" F/5 Newt,
and wanted to get feedback from any
experienced Newt builders.

I've been crunching numbers trying to
go for the smallest reasonably-sized
diagonal. And I'm coming up with 1.52".

Tube Diameter is approx. 10 in.
Planned Focuser is JMI NGC-DX3.

My usage will be about 75% ccd
imaging, 25% visual use.

Using the program, Newt, everyting seems
fine.

But I'm worried about illumination drop off.
Should I worry about this? (CCD chip is
about 7 mm wide)

Or should I just jump up to a 1.83" diagonal?

Appreciate your insights/feedback.

Kwang


May 7, 2003 04:37 AM Forum: Telescope Making

Gary Wolanski - still in business?

Posted By Kwang Lee

Has anyone bought anything from Gary Wolanski
recently? I'm having a hard time getting
any response about his helical focusers...

Kwang

May 28, 2003 02:40 AM Forum: Telescope Making

120 degree brackets?

Posted By Kwang Lee
Does anyone know of any online vendors who
might carry 120 deg metal brackets? I'm thinking
of building a hexagonal tube for an 8" mirror,
and I'd like to reinforce the joints with
some kind of bracket.

Thanks for any leads.

Kwang

June 7, 2003 02:25 AM Forum: Telescope Making

Folded Refractor Light Loss ???

Posted By Kwang Lee
Hi
what kind of image degradation can I expect from
a 2 mirror folded refractor design?

Assuming 1/20 wave mirrors?

I was thinking about a 6" F/15 folded refractor
project. But I'm wondering if it just wouldn't be
better to go for a 6" F/12 with a regular straight tube.

Thanks for any information/insights.

Kwang

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