Keypad database corruption is generally catastrophic in terms of GoTos. Database corruption sends you to the complete wrong place - not just *off-by-a-bit*. And that's if you can slew to catalog

Thanks for the suggestions. I replaced the battery soon after I got the mount. The comparing the coordinates sounds like a good first step. How complicated is it to replace the database if

Exactly. Unless you already did, it would be worth replacing the keypad battery and updating the DB of objects. Scott Cooke

Could be anything, depends also on how far you are off. Without more specifics, we are shooting in the wind. Rolando

Is the object database in your keypad corrupted ? You might want to cross check the coordinates that you get from the keypad with the published coordinates. Mike

I truly love my AP900 GTO3 which I bought from the original owner a couple of years ago. However, I cannot get accurate GoTos no matter what I try. I use solely the had controller with the upgraded

May be if you overlap the frames you can understand if the star position after the event is restored in alignment with the previous frames or remains shifted. If it is recovered it is a transient

yes that is what in fact I am seeing.

Hi All, For those of you on CN, you may have seen this entry by Mr. Whang: https://www.cloudynights.com/topic/767964-lets-torture-the-mach-2/page-6#entry11425336 He has a 150TOA with fairly heavy

When you do Shift + Guide you will see PHD2 enter calibration mode and perform a calibration. There really is no confusion on whether it is doing a calibration or not. Try it and confirm for

I'm not an expert on PHD2, but for every new setup i do a new calibration. I do this for any imaging run because I'm always switching scopes and cameras and never have them perfectly lined up from the

I really appreciate the feedback. the entire community is enriched by your participation. That being said I do need to clarify something on this thread. As I have looked back at my guide screen, I

FYI. Bruce Waddington just did a presentation on TAIC on PHD2's Guiding Assistance. https://youtu.be/LbhxX7PH2CE

I actually thought some sort of critter (bird, bat, whatever) might have been the issue, but the security camera showed squat. Alex

Actually it's not that bad at all. Your initial results were quite good, you got round stars with your 6" refractor. You just have to remember to calibrate before you start imaging - if your setup is

So don't laugh too hard but… Could a bird have landed on the OTA then took off? While that's a big motion tracking wise, it is not really a big movement. Whether that shifted it on the clutch

Balance isn't that important on the 1100 as long as the clutches are fully tight. You might want to check that all your bits and pieces of the dovetail system are fully tight. Rolando

I guess it would have to be a clutch slip, if the mount's encoders don't show the movement. I'll check the balance again. I know it's not a cable tug or the like as I viewed the security camera

no the weather was crapped out but tonight should be game. I realize which is obvious from my experiences how how I am on the dummy side of push here dummy --Phd. I think it is time for me to do

There were no commands to move the mount issued during the time interval you specified. Even if a command external to APCC were issued, it would have shown up in changed RA/Dec coordinates. The