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 03:47:41 · 3 answers · asked by LLOYD W 1 in Science & Mathematics ➔ Astronomy & Space
Assuming this is an equatorial mount, you should only be moving around one axis, namely one that goes through the celestial north pole. If you were not aligned with the north celstial pole, you would see a drift in both Dec AND RA.
Depending on the declination of the object in question the drift will be worse or less worse and would also be distributed differently amongst RA and Dec. If the drift gets worse closer to the celstial equator than closer to the pole, then it probably is misalignment.
Otherwise, whatever friction fitting holds your scope in constant declination is probably too loose and your scope is simply slowly sagging over time. Try tightening things up associated with the declination motion.
2007-08-13 08:37:26 · answer #1 · answered by Mr. Quark 5 · 0⤊ 0⤋
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2017-02-11 02:47:16 · answer #2 · answered by Anonymous · 0⤊ 0⤋
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 23:33:28 · answer #3 · answered by Steve B 7 · 0⤊ 0⤋