Quote:
Originally Posted by PRejto
I would question the wisdom of doing a calibration near the pole! With TSX this is unnecessary. I believe the advice from SB is to calibrate near DEC=0 and let the software provide the scaling when imaging in different parts of the sky. I have never seen any benefit to re-calibrating just because I changed target.
Aidan,
How are you going re the issues you posted about in a different thread a while back?
Peter
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i managed to get down to the observatory over the weekend and do some of the tests that you suggested. i pushed the telescope and it bounced back perfectly. i tested the balance and made some adjustments to the RA balance. to get the dec balance perfect in all positions i will need to put a weight at the end of the OTA, something i dont have at the moment but i am sure it is within tolerances. i am going down again this weekend and i am looking at the worm gears. however, when i was down there i wanted to use the opportunity to take some images of the planets. and oh, boy. the seeing conditions were so bad that i could only just see the bands of jupiter, otherwise it looked like a big blob. Similar for mars and saturn. i carefully focused but couldnt improve things, when i noticed that europa was bouncing around like crazy, extremely fast, i realised that was a significant issue and i wonder whether that could be contributing to the issues i am getting. this was on a night where the sky was unbelievably still. i also wonder if this is true atmospheric issues, or boundary layer seeing issues from the mirror. i am going to take a small fan to run some more tests but right now i have not gotten to the bottom of anything really.
