The next logical step for this mount?
Posted 25 July 2009 - 10:44 PM
So my question is, am I at the limit for AP with this mount? And if so, what's the next logical step up in mounts for AP? Or - should I just be looking for ways to lighten the load?
Posted 26 July 2009 - 02:20 PM
I'm quite sure you have reached the point where the mount is over stressed for accurate AP. Seven pounds is a LOT of weight to try to loose. Where do you start. You can't skimp on the mounting brackets, as mass and solid connections ensure no flexure issues. You would either need to go back to unguided - or move up in mount size.
My EQ6 would easily handle your weight. What scope are you using for AP? If it's a longer refractor it could be a torque issue. I can offer you this suggestion. If you bet another mount, get the best mount you can afford - either used or new. My buddy out west and I thought the EQ6 was a good mount for the money, and there are other offerings out there now in this size range. However, if there is one thing we have learned from this hobby, especially during the first few years, that there are always many changes to the equipment as we develop and progress.
Just when you get settled with an ideal setup - we tend to upgrade. The mount is the limiting factor, and can make or break AP. Getting a larger mount allows for future changes without having to upgrade the mount - again. I got a great deal on a used G11, and my buddy got a used CGE. Both of us are very happy with our upgrades, and one look, and first light with the mounts showed us how much more superior they are over our previous models.
Posted 27 July 2009 - 09:00 PM
I'm thinking a new rig would be considerably heavier, so a few trips would be needed. Not a big deal, though. I guess it's time to check the classifieds to see what's out there.
Posted 28 July 2009 - 06:48 PM
The HEQ5 is rated to 25 to 28 lbs & the EQ6/Atlas can do 30 to 33 lbs realistically.
Now maybe your eq5 can do a mx of 30 lbs but that only for visual & if the tripod is all the way done & hopefully there no wind.
Posted 29 July 2009 - 09:18 AM
Celestron upgraded the CG5 and upped the tripod to 2" legs when they started packaging it with a C11, which is essentially a 30 lb OTA. That suggests a manufacturer's limit of at least 30 lb. That's more than I would put on it for stability reasons, but at least it shouldn't collapse under the weight. Many do excellent guided AP with CG5s and loads </= 20 lb or so. Mine works great with my 15 lb OTAs.
Posted 29 July 2009 - 04:03 PM
Myself i would not load much more than 20 maybe up to 23 max.
Posted 29 July 2009 - 08:19 PM