i have a eq6 pro mount which i use for taking pictures of the things in the night sky, i have polar and star aligned the mount as well as done the pec training (permanent error correction) tracking is almost perfect in r.a. but starts to drift in declination after aprox 4 minutes, i have rechecked polar alignment several times and it seems fine, anyone out their with any answers. i would be very grateful if anyone could help me as i have spent many hours trying to work it out + many more sleepless nights than i should have had. i know this sounds boring but i have nothing better to do at the moment! many thanks lloyd.
2007-08-13 03:48:11 · 2 answers · asked by LLOYD W 1 in Science & Mathematics ➔ Astronomy & Space
Assuming EQ mount, and you always ensure the mount is set up dead level, check your LATTITUDE (wedge) setting ..
Most mounts sold in UK are likley to be set to London (52 degrees) .. if you live in Glasgow it should be 56 degrees ...
Even if it's initially set OK, the Lattitude clamp can slip, especially if you transport the mount in the back of a car :-)
2007-08-13 23:53:22 · answer #1 · answered by Steve B 7 · 0⤊ 0⤋
Hi Lloyd. My first guess is polar alignment. You said that you've checked it several times, but what method are you using for polar alignment? What focal length is your scope? I've found that even a small error in polar alignment can cause noticeable declination drift. Astrophotography can be a real pain at times. If you could post that additional information, I'll check back later and maybe I'll be able to help you.
2007-08-13 09:38:49 · answer #2 · answered by clitt1234 3 · 0⤊ 0⤋