Quote:I have A few questions for anyone that has one of these mounts with the Gemini II:
1. I see all kinds of bug reports for Gemini II from last year, are these bugs resolved now?
2. When I go camping and other campers are trying to sleep nearby, I need to eliminate the noise of the GOTO. During those times can I still push the mount and then just use the Gemini for the final centering at low speed?
3. If the answer to 2 is yes, then when I move the mount manually will I be able to look at the Gemini hand controller and determine when I have reached the object? In other words will it work just like having a Sky Commander or something like that attached.
4. Will I be able to attach the Southern Stars Skyfi unit to the Gemini II and run the mount wirelessly from Sky Safari with my iPad?
Thanks in advance for any answers you can provide.
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Quote:Interesting information guys, thanks. I guess Gemini II is not for me. I think I will go with a non-Gemini model assuming I can still add the encoders and DSCs. I guess buying a used one in this configuration is another option.
The g11 mount does have encoder mount points machined on to the ra and dec housings. Too bad Losmandy does not market the encoders any more. I would be interested in retrofitting them. It would certainly improve the operability of the mount -- if implemented properly.
Quote:Pfile,Do you have the latest firmware?
Quote:That said I had precious little trouble when I decided to adjust my worm mesh in RA. It was easy. Maybe I was just lucky. People seem to fear this task. I did too but, in retrospect, it was not the problem and there there was no need. My RA worm backlash was not excessive. Now, after tweaking it, it is virtually non-existent!
Quote:I can't address the noise issue Lane seems concerned with. The G11 is not silent but it seems unlikely that the noise it generates would be a big deal in a campground to me. But maybe . . .It was news to me that you can vary the slew rate if noise is a concern. Just another in an amazing list of features in Gemini II software IMO.
Quote:Quote:That said I had precious little trouble when I decided to adjust my worm mesh in RA. It was easy. Maybe I was just lucky. People seem to fear this task. I did too but, in retrospect, it was not the problem and there there was no need. My RA worm backlash was not excessive. Now, after tweaking it, it is virtually non-existent!
well, it isn't just about adjusting out the RA backlash. there's the competing requirement that the worm/wheel interface be smooth enough along the whole 360 degrees of the wheel such that it does not bind. and then there's the fact that with the two-piece worm block, making sure the worm is being held exactly perpendicular to the worm is difficult to achieve. and of course making sure both worm blocks are axially aligned with one another. and then there's the whole question of whether you should polish your worm/wheel to get better PE performance.
i'm pretty sure i'm just looking at PE issues. guiding with an OAG, i can see in a stack of 60 7-minute subs that the star elongation is entirely in RA, with no DEC component. this tells me that either there's too much backlash, or the slope of the PE curve is just too great to correct quickly enough with autoguiding. i never see PhD struggling to reverse RA direction during calibration, so i don't think i have a problem with backlash.
i have yet to get a good PEMPro upload. who knows, this might be the solution for me. i'd be happy about that, if i can get it working. in fact, now i wonder why i didn't ask ray gralak about this at AIC. that was dumb...
Bay Area, CA Stellarvue SV4, SV70ED Orion 127 Mak, ST80 Pentax K10D (full spectrum mod with cooler) Losmandy GM11 with Gemini 2 My Astrophotos on flickr and on Astrobin and where I write about my efforts
Quote:hi ray, yes, I have done that and right now the problem is that the PE goes absolutely nuts after uploading a curve with pempro. I have tried inverting the curve to no avail. if I train the PEC with Gemini-2 and ask pempro to retrieve the curve, I see a similar shape to the curve before inversion, so I think the curve is okay. this could have something to do with the guide rate that the curve is being played back at. I have not had time to debug it yet. should have done it tonight but I am too tired from AIC if I remember right I do see RA drift after PE training with Gemini-2. the subs I am talking about above we're mostly aquired with PEC off. is the drift thing a bug, or is it something fundamental about PEC that causes the drift?
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