In the market for a new alt-az mount...
Posted 22 December 2012 - 12:35 PM
Posted 22 December 2012 - 01:56 PM
If I were going to use a larger telescope and higher magnification, especially for the public to look through, I would just set up an equatorial mount with tracking. But if you just want to keep things simple, fast and fun--the DM-6 is pretty hard to beat.
Posted 22 December 2012 - 05:44 PM
The hitch mounts look fussy to me. . .
On the other hand they are the most beautiful (in an architectural sense) alt-az mounts I've ever seen.
This impression is essentially correct.
Posted 23 December 2012 - 05:53 PM
Posted 26 December 2012 - 01:18 PM
You're right, the DM mounts are nothing to write home about aesthetically, but they work great. I used the DM6 for many years with the TEC140. I sold the DM6 and replaced it with the DM 4 to use with the TEC110. The DM 4 has a higher capacity than what has been reported. I've been tempted to put the 140 to see how well the mount can handle the extra weight..
Posted 26 December 2012 - 04:20 PM
Posted 26 December 2012 - 05:25 PM
- Balok likes this
Posted 16 December 2015 - 09:16 PM
I use my DM6 on top of the DM->Losmandy Adapter on a Losmandy EX12 pier extension on top of the Planet tripod. There is about 13 inches between the Planet and the DM6 with everything between. I can be looking at the zenith with my TEC140 and rotate in azimuth without hitting the legs.
I own the DM6 and the v1.FTX. I have the v1+ upgrade kit and a v2.FTX on order. The DM6 can handle up to a TEC 180, a C11 or 12 inch Newtonian without any problem and can be setup to be pretty balance insensitive to eyepiece changes at the cost of a heavier touch when moving the scope. The FTX setup is lighter and has 2 axis balance which permits a very low amount of friction when moving the scope which is nice when tracking planets. My v2.FTX will have slow motion controls. I plan on keeping them all. I also have a very light FTQ which is perfect for grab and go holding my SVR90T on a Gitzo 5541LS tripod.
I pretty much dedicate my v1.FTX to my Lunt 45 degree 100mm APO ED binoculars. I appreciate the very light touch to move the binoculars in azimuth or altitude with perfect balance. I can nudge the view with the bridge of my nose when desired. When sharing views with others, I use the levers to increase the friction so the other observer doesn't move the binoculars off target without intending to.
I am happy with all my alt/az mounts and find it much more natural to use than a GEM when observing visually.
Edited by JMW, 16 December 2015 - 09:34 PM.
Posted 16 December 2015 - 09:26 PM
I own a Planet and Avalon T-Pod 130. They are both great tripods. I think the T-Pod 130 has the better performance/pound ratio. With a TEC140 you will want some kind of pier extension above the tripod if you wish to observe near the zenith.
The secret to tracking at high powers (250+) is a very stable mount/tripod setup with virtually no damping time. This allows me to keep my hand on the mount handle or focuser while observing and regularly nudging the scope while tracking the object. I have done this using my TEC 140 with a Nagler 2.5mmT6 at 392 power when seeing conditions were great. I do it with my Nagler 3.5T6 when seeing conditions are good.