Re: [APML] need advice on camera mount

[Wei-Hao Wang <whwang@gmail.com>]

Hi,

Thanks for all the advises.  

I had been thinking about alt/az mounts.  Most of them are perhaps not 
esigned for long exposures.  They may be able to load heavy things, but 
may not be rigid enough to maintain the pointing accurately during exposures 
longer than an hour or so.  I have similar doubts on ball heads.  Jerry, do 
you think the Arca-Swisss ball heads capable of doing this?  I don't have 
experience on such heavy duty ball heads.  I only know about small ones.

The closest to the alt/az mounts is this:
http://www.buytelescopes.com/product.asp?t=&pid=1587&m=35
(I can get this with about $350.0 from Japan.  It's not as expansive as it 
sounds.)  This treats the camera as a guidescope.  It should be strong
enough, I guess.

Another candidate is Gitzo Pan/Tilt Head:
http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=170918&is=REG
But again, I'm not sure if it is strong enough for long exposures.

Any thoughts?

Wei-Hao

-- 
________________________________________________________________
Wei-Hao Wang  :)

Institute for Astronomy at University of Hawaii

Address:                       
2680 Woodlawn Drive         Personal Website:
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