New mount ideas

[Benklerk]

Hi

I had a CEM120EC that gave me the #$#@. It never performed well on my 14" telescope and I did have a SDE of 0.4 arcsec. I spent 6 months trying to get it to work and now its gone from my life, worst mount I have ever used, and its also my first heavy payload mount.

Now I'm looking at new mount, does anyone of any reviews on either the 10micron GM2000 or GM3000 and the mesu 2000?

Ben

[Benklerk]

At this stage, I'm looking at getting the GM3000, as I will have room to move if I want to upgrade later on.

[JayStar]

What was wrong with the CEM120?

 

[Benklerk]

On 03/01/2021 at 06:20, JayStar said:

What was wrong with the CEM120?

 

Hi @Jaystar

The CEM120 encoder versions have a very common issues with SDE. It can cause slight eggy stars on telescope with long focal lengths. Its basically how the encoder sends signals to maintain tracking.  There is a whole discussion on it on cloudy nights. But unless you have a 12" telescope or larger. You probable won't see it. Ioptron knows about and has never fixed the problem since the mount was introduced a few yrs ago. 

[JayStar]

On 23/01/2021 at 05:43, Benklerk said:

Hi @Jaystar

The CEM120 encoder versions have a very common issues with SDE. It can cause slight eggy stars on telescope with long focal lengths. Its basically how the encoder sends signals to maintain tracking.  There is a whole discussion on it on cloudy nights. But unless you have a 12" telescope or larger. You probable won't see it. Ioptron knows about and has never fixed the problem since the mount was introduced a few yrs ago. 

Mine has arrived now - it's a slightly newer version with 3 USB 3.0 ports instead of 1.  Some of the internals are different too.. e.,g no longer takes a Polemaster. Will be checking for the SDE issue though my max FL on the 3 mounted scopes in 2.35m. 

I have read all the threads on CN.  

If I could have doubled the budget I would most certainly have gone for the 10Micron GM2000.

 

Edited January 29, 2021 by JayStar