Which Alt/Az Mount for Explore Scientific ed102?
Posted 17 February 2014 - 06:18 PM
-Vixen Porta II Porta II
-Orion VersaGo III VersaGo III
-Explore Scientific Twilight ES Twilight
-Astro Tech Voyager ATV
Which one of these would be best? Am I missing a better option in this price range? I know the ES Twilight II would probably be much better, but it is slightly out of my price range. Also I would like to have an option with a pier extension so the eyepiece will be in a more comfortable location. The ATV could have a pier extension, but it is on a wait list so that may not be a possibility.. Any Ideas?
Posted 17 February 2014 - 06:29 PM
Posted 17 February 2014 - 07:24 PM
The AT is similar to the Vixen and the Orion is similar to the ES tripod styles.
Posted 17 February 2014 - 09:18 PM
Posted 18 February 2014 - 12:14 AM
Posted 18 February 2014 - 11:56 AM
Posted 18 February 2014 - 02:46 PM
Yes, they will all handle your 'scope, but.....
1) The CoG is offset from the center-line of the tripod. Personally, I don't like this from a security POV, or esthetics. Further, they are much more awkward to carry around.
2) The tripod legs will foul the 'scope at high elevations. Astro-Tech offers a pier (18" high???) that mitigates this problem.
This is based on my experience with a Voyager, which I still own.
Personally, I prefer alt-az's that are balanced over the tripod center-line, like this:
There are many manufacturers that offer this type of system, albeit at some expense, but the cheapest would be the very highly-regarded and beautiful Vixen Polaris GEM in alt-az mode. You can find them for less than $200, and with a wooden tripod to boot!
Posted 20 February 2014 - 12:56 PM