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Hi Greg,
I recently purchased a AZ-GTi along with an Evostar 102. I am going to post a full review in the near future along with pics of both. Is your 105mm a Catadioptric, newtonian, or refractor? I can tell you that if it is a refractor, its length will limit its use on an Az Gti to only nights with very very minimal wind, if it is used with the AZ Gti as I am using. While it does work and quite well on nights of very low wind, the length of the refractor tube does cause some vibration which makes focusing challenging. There are advantages to the Az Gti and even paired with a 4" refractor, but performance and stability would be superior if we were talking about a 4" Mak which has less interaction with wind. For a camera, I would want a more stable system, so overall my advice would be for the EQM-35 for both applications. Especially where even minor wind will affect your exposures. You need stability. EQM 35 offers more stability than AZ GTi while also remaining very portable. Will have plenty more to say on an AZ GTI 4" refractor combo in my future review... Do reach out if I can be of any help. Clear skies, Mark.
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