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Thread: Best mount for low latitude?

  1. #11
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    Default Re: Best mount for low latitude?



    Quote Originally Posted by virtualage View Post
    Should I get the AVX instead? It is advertised as 7 deg and up. But I still have my doubts. Anyone faced issues with the AVX is 8-14deg latitudes? It should work fine right?

    Celestron has a good offer going on right now and I might be able to get an 6inch Newt with the AVX for the same price as CEM25P. Maybe even the 8inch Newt putting in a bit more. Would imaging be an issue on the AVX with the 8inch newt?
    I imaged with the AVX at 7 degrees south latitude for a year with excellent results. One thing you will want to do at lower latitudes is purchase one or more Orion 7.5lbs counterweights. They have a smaller diameter than the factory Celestron 11lbs weight and much less chance of striking the mount or tripod legs. Here is what I mean:





    Again, this was at 7 degrees latitude- note how close to the mount and legs the counterweight bar is that close to the equator. At 12 degrees where you are, you'll have better clearance, but the smaller weights would still be nice for peace of mind. I can't speak on the CEM25, but will tell you from several years of experience with the AVX that it is awesome.

    On the note of the Celestron 6" Newt package, I do not have experience with that newt, but have seen in other threads citing that scope as less than desirable. My recommendation would be the AVX or CEM25 and a nice, 80mm doublet or triplet apochromat.

    Hope this helps!

    Mike
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    virtualage (09-12-2017)

  3. #12
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    Default Re: Best mount for low latitude?

    Thanks a lot for your inputs Mike!
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    Default Re: Best mount for low latitude?

    Henk alerted me to this thread. I don't often visit this forum.

    I've been using an AVX on the equator for about 18 months. I had to make some adjustments. But no pier was needed. Yeah, I have to be REAL careful. But I am real careful and have never had any problem with the counterweights hitting the legs. And, as I said, I had to make some adjustments. I can send a photo if you want. Cost me next to nothing to make the adjustment.

    My thinking is that you should have no problem at 12 degree north. You won't even have to make an adjustment, as I did. Just make sure you use the option of switching the Az screw from the one legged side to the two legged side of the mount.

    Clears,
    Joe
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    Default Re: Best mount for low latitude?

    Thanks so much Joe (and Henk)!!

    Please do send a photo on your adjustments. Your input definitely puts me at ease with the AVX!
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    Default Re: Best mount for low latitude?

    Quote Originally Posted by virtualage View Post
    Thanks so much Joe (and Henk)!!

    Please do send a photo on your adjustments. Your input definitely puts me at ease with the AVX!
    See the pictures in this post. (It's the latest one for the thread...)

    Post Pictures of Your Astrophotography Imaging Setup!

    What happens is that the back leg is extended much more than the two front legs. An adjustable "brace" (not quite an extra leg) keeps the rig from falling forward.

    Clears,
    Joe
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    Default Re: Best mount for low latitude?

    Quote Originally Posted by virtualage View Post
    I have been thinking of upgrading my mount and have been looking at AVX, EXOS2-GT (with or without PMC8) and recently also considering the iOptron CEM25P. It looks like the centrally balanced CEM25P might be better for lower latitudes just because of the design. It also seems to come with the option of moving the weight bar to a higher angle which allows it to be used in 0 deg as well. Any thoughts on this? (I am in Bangalore at 12.97)

    I also wanted to check if it might be a good idea to just go for a nexstar 6se and use the wedge. Considering the angle is low - it should ideally put lower pressure on the mount right at only 12-13deg?

    Considering that I want to try some DSO imaging, what do you think I should go for? If it is the CEM25P, I might just continue using my astromaster 130 scope for a while. With the 6se, would it be possible to use a focal reducer and use for DSO imaging?
    I actually started with the AVX but gave up after realizing the latitude limits and exchanged it for the iOptron ZEQ25GT which was the CEM25's predecessor. Another friend and I were both using the this, him at 2°N and me at 4°N. Both of us decided to just get the mini-pier from iOptron itself, rather fiddle with things like extended rear leg and risk a topple-over. Since then, I've changed to a CEM25EC, still with the mini-pier but on their 2" tripod for better stability.

    This is mine with the SkyWatcher 120ED


    and this is my friend's almost overloaded ZEQ25 with about a 22lb imaging load including an autoguider for NB imaging.
    Attached Images Attached Images
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  11. #17
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    Default Re: Best mount for low latitude?

    Thanks a lot for your inputs Joe and Roger!
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    Default Re: Best mount for low latitude?

    Quote Originally Posted by Leveye View Post
    I would not exceed 24 LBS imaging or visual with either the CEM25 or the ZEQ25GT. You run the risk of burning a motor out. Don't ask me how I know this...;-)
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    Default Re: Best mount for low latitude?

    Quote Originally Posted by Brodavid1953 View Post
    Been there, done that,
    Not proud of it
    Was it on the ZEQ or CEM25? CEM25 seems to have different motors.
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    Default Re: Best mount for low latitude?

    Anyone knows the latitude range for EXOS2GT mount (with or without PMC8) ? It does not seem to be specified on the product description pages and I did not get a proper response when I posted this to them.
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