That's likely way too close. Use the moon.
Jim
jimwaters@xxxxxxx
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Michael McDonald
Sent: Tuesday, May 29, 2018 9:37 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: Focusing Orion StarShoot Autoguider on Orion 50mm
helicoidal guide scope??
Could it be that my target street light isn’t far enough away? I was attempting
to get rough focus on a stationary object as I find trying to track a star and
focus at the same time to be very difficult. As in beyond my skill level. Maybe
I should try using the Moon as a target?
It looks like the scope has about 1/2” of focus travel. I “think” I was at the
full extension but it’s hard to tell which way I was without the tape measure.
Michael McDonald
mikemac@xxxxxxxxxxx
On May 29, 2018, at 9:08 PM, Jean-François Gout <jfgout@xxxxxxxxx> wrote:
Hi Mike,
I use this autoguider with an ASI-120MM and have no problem reaching
focus with this setup. Are you closer to being in focus when the
focuser is at its maximum extension (in which case you could try to
simply not fully engage the 1.25" adapter and gain a little bit of
travel course by extending it outside) or when it is at its minimum
(in which case you would need a low profile adapter which would reduce the
distance to the CCD chip).
jf
On Tue, May 29, 2018 at 8:57 PM, Michael McDonald
<mikemac@xxxxxxxxxxx>
wrote:
I have the mentioned autoguider that is sold as compatible with the
50mm guide scope. I can’t figure out how to get the StarShoot to be in focus.
I’ve tried using a 26mm eyepiece focused on a tree light as far away
as I can see. That I can focus but just before I reach the end of the
focuser travel. When I put the StarShoot in place of the eyepiece,
it’s not in focus and no amount of adjustment will bring it into focus.
I’ve noticed that there’s quite a bit of backlash in the focus ring
on the guide scope when reversing directions. About a third of a turn
before it starts changing the focus. Is that normal?
If anyone has a procedure for setting up the autoguider with the
guide scope for the first time that might work with my combo, I’d
love to hear about it! I had planned on bringing everything to the
“Non-existent ATM meeting” tonight but that got cancelled. :-) (Hi
Paul!) I’d love to get this figured out before the next ATM meeting.
Mike McDonald
mikemac@xxxxxxxxxxx
--
See message header for info on list archives or unsubscribing, and
please send personal replies to the author, not the list.
--
See message header for info on list archives or unsubscribing, and
please send personal replies to the author, not the list.
