[Aavso-photometry] OT: Using alt-az for imaging?

[Roland Roberts]

This is off-topic, but I've been given permission to buy a new scope 
from the "appropriates committee" :-) and since right now I've been 
using a 5-inch achromat, I'm looking for a big jump in aperture. 

And yes, I know, its complicated by field rotation, and I'm not looking 
for theoretical reasons to avoid this.  I will almost certainly be 
buying something like a Pyxis rotator soon *anyway* since it makes it 
easier to find guide stars for some images.

What I'm wondering is if anyone here has done or is doing imaging with 
an alt-az setup.  I've been eyeing the 14" Tscope (www.tscopes.com) as 
an economical way to get a big aperture with low weight.   Going over 
12" with a S-C seems to be asking for back problems :-/  And if I 
abandon alt-az as possible, I'm considering the NGT-12.5 from Jim's Mobile.

So, anyone here have any experience with using an amateur alt-az mount 
for imaging?

roland

-- 
                       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
roland at rlenter.com                            6818 Madeline Court
roland at astrofoto.org                           Brooklyn, NY 11220