I'm not sure what the number of the Min Move in PHD actually is. It's dimensionless, so it could be P-P, RMS, arc seconds, inches, miles, parsecs, degrees centigrade, etc. In Maxim DL it is defined as

From yesterday's guide log, it seems 200mm guide scope was used for calibration.

I simply use 0.8" for MnMo and translate to pixels based on image scale of my equipment and works well. Peter

It's not that simple. The purpose of the MnMo setting is to allow PHD2 to ignore guide star position errors that are smaller than the scintillation from seeing. Since seeing varies

well I got my min-mo's from the GA last night so that should be adequate.

Nicholas >>> In any case Steve you point out for longer GA. I understand, 20 minutes at least for worm cycles. for determining min move, you only want a couple minutes You can use a longer GA run (20+

I doubt the profile got corrupted but if you used incorrect profile that does not match to your equipment, you will get incorrect results of RMS error, MnMo, etc. Peter

This was the 152. Only thing I was not sure about were Rolando's recc's for higher Min-mo but I believe those were in light of poorer seeing conditions and I had the GA recc's and I thought better

Thanks Roland, that was enough of an explanation. I got it snapped back into place. By the way, while I'm here, have you ever thought about putting handles on the RA axis? I live in the desert up

Nicholas, When you used PHD2 with main scope (115mm or 152mm), did you create a new profile in PHD2 to change the following: 1) focal length of scope 2) pixel size of camera if you didn't use guide

Yeah, treating it like a planetary image makes sense and there are some wicked good planetary imagers out there with bigger apertures too. An interesting challenge. Jeff

Hi Brent I purchased a copy - this is really interesting Do you have any tutorials or guides on how to test the system in preparation for a transit? ISS transit is coming up for me Sunday -- Brian

There's probably a way to do it by taking thousands of very short exposures with a noise-free CMOS camera and stacking them, similar to what planetary imagers do. back then I was using an old ST10

This is to protect the encoder ring from any cables that you might want to run thru the mount. It holds the cables away from the encoder ring so they don't rub on it. Call Dave at AP. He'll advise

Pretty cool Roland. Very nice. The glob is obviously non-stellar in your old image and on the edge of resolving the outer stars. I bet the 12" with the latest cameras just might "get there". Nice

The mount could use a good PEMPro run. Create a PE curve, load it into the CP3, turn it on and your guider won't have to struggle as much. Rolando

Thanks. I will do that. Thanks again for this big upgrade and thanks also to the Astro-Physics team for the APCC upgrades that make it possible.

Sometime after 3AM this plastic part moved. What's its function? Where is it supposed to be? Is there a way to convince it to stay put?

If I were in your shoes I would spend some time imaging and see what you get. If any gremlins crop up that are repeatable, then you will have a better idea of what is happening and can be more

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