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SonnyE, I'm not sure what you are saying here. Are you saying the PHD2 PE data people use to debug and refine their mount's tracking is not valid and the data cannot be compared between mounts? --

Taylor, There are other types of couplers out there but they all have their own advantages and disadvantages. The best results have been produced with Oldham couplers in good condition where the

Anytime we would change out, or have to dismount a motor with a flexible coupling, we would have our machinist help with the final alignment. Of course, these were typically pumps running at much

Sonny Good results speak for themselves! wrote:

In my experience, the Gemini 2 has been as infallible as it can be. Much better than most. It was just a strange thing to have happen. And I do believe it was before the Format and Repair of my mounts

Taylor, The only study I found was from Michael Sinescalchi. His website www.helixgate.com described trying a Ruland coupler. It did not improve PE, maybe worsened it. No knowledge of other types of

Hi All, Wondering if anyone has had any success with a replacement coupler for the Oldham coupler design, such as a bellows coupler that Real14 on CN suggests? (

if that's the case with the situation you describe, it's possible that a bad alignment caused the model to get corrupted I'm not saying the Gemini is infallible (as evidenced by the beta firmware),

After doing a fresh modeling build up and having successfully slewed around to a few other stars? Nothing changed the settings, it just got weird. So I shut down the Gemini 2, re-centered my

Hi Magnus! What beta firmware might that be? I not long ago formatted my Gemini 2, and had to re-install everything. Maybe it was recently enough to have gotten the update? For me, the loss of

all sense of directions! Have you tried it? It works very nicely on my mount, this far. that is not accurate. the firmware update addresses certain situations where the movement in both ra and dec is

You are not quantifying things if all things are not identical. And none of us have exactly the same things. So anybodies results are never the same as another. On top of that, none has laboratory

Sonny, That is what the beta firmware is here to solve - when the mount looses all sense of directions! Have you tried it? It works very nicely on my mount, this far. Best, Magnus Den 2020-06-16 kl.

Well, that sucks for you, I think. My backlash is so minuscule, I often find myself dropping down to guiding speed during my centering process. Because I sometimes overshoot with the tiniest blips.

Under sampling images are certainly a great way to be able to ignore objective PE error numbers. The lost detail is not and cannot observed due to having huge circles of confusion and soft images that

Different people have different approaches to this, which I respect. For me personally, quantifying things has been a big help. While there are many variables, several of them lend themselves to be

Yes, wanting to quantify things is a wacky idea. Keith

Eric, Forgot to mention that the mount can also be made accessible over your local network if you set it up to use the same segment and mask. This way you can control the Gemini using a PC or the web

A lesson in cable management, finding sneaky cable just barely caught on the mount. Thought this might make you laugh!

Eric, I don't know which mount you have or how you have your Gemini 2 setup, home network, remote dark sky site etc. or what other resources you have with you or on your person while observing. But to