Having checked the main tube of the 7" is truly horizontal with a builder's level I then press SETPK. [Set park] What could possibly go wrong? Remember that the telescope hasn't yet moved so you'd think I could press SETPK again just to confirm. But no! Not calibrated! It is supposed to have remembered the parking position from last time! So I calibrate again and then press SETPK. Completed.
I have repeatedly checked the polar altitude of my big mounting. Most lately with a 0.1° digital clinometer on my 2" polar shaft. I checked my local north pointing angle at 3° E positive declination or magnetic variation. The pole Star is not always visible due to a large tree right behind the observatory. [Season and leaves permitting.]
So I lay a 2m long builders straight edge against each base fork tine in turn. With the free end resting on the dome's roller ring to confirm it is all north pointing. While being careful to avoid any iron in the vicinity I [gently] adjust the azimuth with a scaffolding pole. It is massively heavy!
I just rechecked the easterly horizontal position, weights down, Synced on the IH2 and was greeted with "Perimeter Exceeded!" So now I can't even Sync on the parking position! So I go through all the Syncing rigmarole again and it accepts it. I hit SETPK and it accepts that too. But for how long?
The madness goes on: Having just confirmed that both AWR and C-Du-C were showing parked I sent the telescopes to Polaris. It seems Polaris is now 20° east of its known position! Should I confirm this change with the astronomical authorities and claim my Nobel Prize for Physics? Or should that be astrology?
Having moved the telescopes to the traditional position over the polar axis I pressed Home for park. The polar axis started turning and resolutely headed west. The 7" objective is now staring down at the floor of the observatory towards the north east. That is only two movements and both slews were to completely the wrong target! The Polar Axis need not have turned AT ALL in both cases. So it was just a simple Declination slew. When I closed down the Altazimuth readings were shown on the IH2 screen. There too were complete and utter garbage! Now, where do I enter "Garbage" for the next target!