Quote:
Originally Posted by Garbz
Indeed, but PE can be corrected for in other ways not just pulse guiding.
Also I don't buy that the correction is an issue when using a pulse guider as it's a series of commands sent to software. It may make an issue with ST-4 where the pulse is actually sent out to the mount, but I ask you the following: What's the difference between 20x1, and 100x0.2 ? It's just a software calculation and the resulting 20ms pulse gets sent to the mount in either case.
In any case I've tried both high mid and low settings and it hasn't made a difference.
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Hi Chris,
Fair enough.
I was only giving you ideas - I didn't know that you had already tried that.
While PHD is calibrating it is obviously doing so when there is not
a rapid excursion problem -
so it is not seeing that problem & sets in the
gain of the system
for a normal situation.
It then cannot handle the sudden rapid excursion which
is probably caused by a Dec backlash issue. ( or some other mechanical issue )
It could be anything: a bit of grit on the worm wheel or
a maladjusted Dec axis.
When my NEQ6 was adjusted the technician connected a 2 meter long steel bar
on the top of the mount & he could check the play that way.
Apparently he used a section of cigarette paper
to place between the worm drive gear & cog to measure the gap.
It needed a tiny gap so that it wouldn't bind & he managed
to obtain far less play without it binding.
It might be something you could do yourself?
cheers
Allan