Quote:
Originally Posted by ballaratdragons
I know for a fact that Vixens Skysensor2000PC has asmospheric refraction compensation.
Dunno about our EQ6's though  |
Hi Ken,
Our own Argo Navis performs atmospheric refraction compensation,
and takes into accounts effects such as refraction and nutation.
Refraction is one of those transformations that unless taken into account
can degrade the whole-sky RMS pointing performance of the telescope.
Refraction can be as much as about half-a-degree down on the horizon
and about an arcminute at 45 degrees elevation. Which brings us back
to the original line of this thread with regards the pursuit of some
"holy grail" exact polar alignment position. There is no such point and
perfectionists will be disappointed. A good compromise for such
people is to aim for the refracted pole.
Best regards
Gary Kopff
Wildcard Innovations Pty. Ltd.