Dear Group,
Further to the discussion in another thread (Losmandy G-11 vs Mach1GTO), I would like to digress a bit and present you with the behaviour of my AP 1200GTO which was received late last summer.
The attachment involves data collection across six complete worm cycles as per the recommendation of the PEMPro software. Since the purpose of this data collection is to gather data in relation to the inherent periodic error of a given mount, PEC must be turned OFF.
Now, how smooth and repeatable is the inherent error? Especially after six full cycles representing roughly 38 minutes of operation? As indicated by the attached screen capture, the star moved from its initial position during these 38 minutes by a NET amount of 1.245" in RA and 1.370" in Dec. For the sake of completeness, this was with the OTA pointing at Dec=0.
A follow-up message will present a similar graphic with the scope pointing due east since only one attachment per message seems to be allowed.
Anthony.
Further to the discussion in another thread (Losmandy G-11 vs Mach1GTO), I would like to digress a bit and present you with the behaviour of my AP 1200GTO which was received late last summer.
The attachment involves data collection across six complete worm cycles as per the recommendation of the PEMPro software. Since the purpose of this data collection is to gather data in relation to the inherent periodic error of a given mount, PEC must be turned OFF.
Now, how smooth and repeatable is the inherent error? Especially after six full cycles representing roughly 38 minutes of operation? As indicated by the attached screen capture, the star moved from its initial position during these 38 minutes by a NET amount of 1.245" in RA and 1.370" in Dec. For the sake of completeness, this was with the OTA pointing at Dec=0.
A follow-up message will present a similar graphic with the scope pointing due east since only one attachment per message seems to be allowed.
Anthony.
Attached Image: