I'm hoping to get a camera with a higher frame rate to do stacking of different parts of ISS pass. The ISS in not the same as a DSO On approach you are recording the front. When overhead you are

All of these are good. I do plan on using a model so maybe this is all moot. Thanks, Tom

It depends on the accuracy of the plate-solves and pointing repeatability of the setup, so you will have to experiment to determine the minimum number of points you need. Any randomness in the system

One thing I discovered last night while testing a new setup was that I got inconsistent pointing after modeling. I traced it down to a focuser drawtube that was not snugged down and locked into place.

I'm not sure what people use, Ray would have to chime in on that. Rolando

Roland, Got it. Just uploaded the previous curve, and then read it again from the mount. Looks identical to the previous screenshot. I'll double check with a PHD run as you stated. "These two things

Even though I'm fine with things working as they do now, I love a mystery, so I swapped out the RocketPort card for a spare that I had....same result. Tried swapping the cables as well, and

These two things are measured completely differently. Guiding error is normally presented as an rms number, whereas PE is usually given as a P-P number. The two are not equivalent. You can have 5 arc

Before you make any model, be sure that your PE curve is actually working correctly. That means running PHD again with PEM ON, and noting the resultant unguided curve (ignore the drift). If it doesn't

I have seen RocketPort card problems in the past and they usually were traced to the card not being fully seated in the PC's card slot. "My advice is always free and worth every penny!" -Christopher

First, if you are using APCC-Pro, modelling compensates for cone error so you don't have to shim or adjust anything. It's all taken care of via APCC software in the model. Second, I prefer adjusting

Brent...nice job. Is that a video in a format like AVI that can be entered into Autostakkert? If so Autostakkert would pick best shots, perfectly align, and stack into a higher resolution single

A general question: This mount has no encoders and a good PEC will reduce the PE to say 1 arcsecond. My typical OAG guiding error was a very consistent 0.4 arcseconds. Would be correct to say that

Roland, Thank you for clarifying that. Yes, I understood that PE correction applies to the few arcseconds of sinusoidal like wiggle in the Ra. Dec drift, should be corrected by the model. I didn't see

Periodic error can be describes as speed bumps at regular intervals on the road. The PE curve measures those and applies the opposite movement so that the ride is smooth (and your head doesn't hit the

I pick a star near the zenith, slew and center it and hit recal. Then I press "flip scope" on the keypad and the star will be acquired on the opposite side. Any difference in RA direction will be 2

Hi Roland, Having had some sleep now (severely deprived) I see what you mean about the previous curve being better. A flatter curve to work with and then I use the model to correct for PA and other

Hi Ray, I believe I had it downloaded, will take a look at it. Thank you for the link (I was aware you have created quite a few software and contributed much to the community). -Rouz

Tom - Look up the ConeSharp program, from the SharpCap folks. Very easy to use, no need to use a specific star. Adjusters make life easier than shimming. Steve

Hi How does one adjust cone error if you have no view of the pole and use a camera? Thanks