#623 Oct 14, 2000
Thank you for posting that picture of the polar alignment scope in
the files section--it confirmed any doubts I had as to its proper
use. Why isn't it in the manual? For that matter, why are there no
pictures in the manual whatsoever? Would be helpful.
As a previous fork mounted user (U2K), I used my G-11 for the first
time the other night. Based on previous experiences with new
equipment, I didn't even get my CCD cameras out so I could try to get
used to this mount and DSC.
It was previously mentioned to have 2 paper widths between the gear
and the shaft--what if mine seems to have quite a bit more (like 5-
I found the RA smooth, but the DEC axis stiff even with the clutch
Are the CKS worth the money? After tightening the RA clutch I wonder
how sturdy the setup will be when I hang the cameras. Will it slip
without the CKS?
Using the DSC and doing a one star alignment it appeared only to work
properly if you choose SECOND star when you pick the one star. The
manual implied only select SECOND star if you had a german mount and
chose a star in the west. I chose a star very east. Do most of you
do a one star or two star alignment? With a one star alignment I got
the objects in a 26mm eyepiece FOV on my C8, but not centered enough
I'm guessing for CCD work.
I bought a Losmandy polar finder through Pocono from stock but it
might have been the last one--anyone interested give them a call.
I'm very impressed with the quality/machining of the mount and after
seeing the discussion on the CI-700 believe this is a winner. Take
#625 Oct 15, 2000
Using the DSC and doing a one star alignment it appeared only to
work > properly if you choose SECOND star when you pick the one star. The
> manual implied only select SECOND star if you had a german mount
and > chose a star in the west. I chose a star very east. Do most of
you > do a one star or two star alignment? With a one star alignment I
got > the objects in a 26mm eyepiece FOV on my C8, but not centered
enough > I'm guessing for CCD work.
I've been using one star alignment, with Losmandy encoders coupled to
a JMI SGT-MAX interface, for months. The software is Earth Centered
Universe. I find one star alignment works very well, although the
software asks you to set the scope to either 0 or 90 degrees
declination first. When I asked David Lane (the author of ECU) if
there was any merit in setting the scope manually to 0 degrees
declination, he said it formed part of the overall alignment and
would increase accuracy.
Maybe moving map software is easier to use - it's more intuitive than
a 'calculator' display, but I certainly find it works superbly with a
CCD for finding faint deep sky objects. The only down side is you
tend to loose your dark vision by viewing a laptop screen (even with
a dark filter over it). The scope is a 10" SCT, at either f6.3 or f4,
with a Starlight MX5 series CCD. I discarded the use of a flip mirror
and now use a home made pair of camera adapters that give me a par
focal eyepiece, SLR camera and CCD camera, all using Canon Ft bayonet
mounting. By re-aligning on a nearby star, I can place any deep sky
object on the MX5 every time (maybe not right in the centre, but at
least on the CCD). The G-11 mount is stable enough to swap these
items without moving the scope.
Details at www.astromag.co.uk