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FYI, these times are Pacific Time. Adjust as needed for your particular time zone. -Bob

Paul, I have a spring loaded worm so from what I am reading these are less susceptible to backlash?. Last night I ran? "baseline guiding". Tonight looks to be clear as well. I will repeat that and

** HARDCORE ASTRONOMY (NOT FOR THE FAINT OF HEART) ** https://telescopes.net/store/june-17th-hardcore-astronomy-not-for-the-faint-of-heart/ 12:00pm - 01:00pm - BRUCE WADDINGTON - PHD2 01:15pm -

Hi! Yes, of course you are correct. However, the feeling that when the scope just "runs away" is a bit like the mount was suddenly confused. And of course, time and location is the first things to

Hi Taylor, I forgot to ask which drivetrain are you running on? Classic straight drive with two-piece worm blocks, classic straight drive with gen 1 OPW, tucked-in servos with two-piece worm

Didn't ask, but do you have a spring-loaded worm? If yes, backlash is less likely to be an issue. I don't use PHD, but there's a tool there to measure the amount of backlash and to then automatically

Thanks, Paul. Should I use a different backlash setting in PHD2?

Hi Arun, Possibly backlash. It takes a while for DEC to reverse direction. When it does, you see the large jump resulting in a saw-tooth-like pattern. Regards, -Paul

Hello, Attached is my guiding log from last night. I'm looking for some input on a sinusoidal or sawtooth pattern I'm seeing in DEC. Guiding in RA seems reasonable -0.54" RMS. The sawtooth pattern is

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

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

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