[Astro-mdm-trouble] MDM Trouble Report for 2020 Feb 19

[Eric Galayda]

Nope, it had moved in both axes. I’m really not sure how to explain the motion but the fuse was definitely blown this morning. 
Cheers
Eric

Sent from my iPhone

> On Feb 20, 2020, at 15:33, "John.R.Thorstensen at dartmouth.edu" <John.R.Thorstensen at dartmouth.edu wrote:
> 
> 
> It may be that each axis has its own fuse?
> 
> John
> 
>> On Thu, 20 Feb 2020, Jules Paul Halpern wrote:
>> 
>> Yet the telescope did move very far, at least in one axis.
>> Jules
>> On Thu, Feb 20, 2020 at 3:10 PM John.R.Thorstensen--- via ASTRO-mdm-trouble
>> <astro-mdm-trouble at lists.osu.edu> wrote:
>> 
>>      Ah.  Probably a consequence of trying to move with the
>>      brakes on.  I blew the windshield-wiper fuse on an
>>      old Datsun once by hitting the wiper switch when they
>>      were frozen solid in ice.  As an old upstate New Yorker
>>      I'm sure you remember what that's like!
>> 
>>      John
>> 
>>      On Thu, 20 Feb 2020, Galayda Eric via ASTRO-mdm-trouble wrote:
>> 
>>      > Blown drive fuse.  Replaced and all seems ok.
>>      > ****************************************************** 
>>      > ERIC GALAYDA 
>>      > Site Manager
>>      > MDM Observatory
>>      > 950 N. Cherry Ave. Ph. 520.318.8660/1 
>>      > Tucson, AZ 85719 email: egalayda at umich.edu  
>>      > http://mdm.kpno.noao.edu
>>      > ******************************************************
>>      >
>>      >       On Feb 20, 2020, at 4:42 AM, obs24m--- via
>>      ASTRO-mdm-trouble
>>      >       <astro-mdm-trouble at lists.osu.edu> wrote:
>>      >
>>      > MDM Trouble Report for 2020 Feb 19
>>      >
>>      > Telescope: 2.4m
>>      > Observer(s): David Schiminovich, Nicole Melso (Columbia
>>      University)
>>      > Instrument: CHaS
>>      >
>>      > Problem(s) Encountered:
>>      > When we began astronomical observations, we slewed to the
>>      nearest
>>      > bright star and noticed that it had not been acquired.
>>      >
>>      > After trying a few commanded slews to other positions near the
>>      zenith,
>>      > we
>>      > noticed that the brake was engaged, and was a likely culprit
>>      for our
>>      > pointing issues.
>>      >
>>      > Among the problems we had noticed was that slews were not
>>      being
>>      > properly completed (as one might expect, given that the brake
>>      was
>>      > engaged!)
>>      >
>>      > Since we were near zenith, we sent a command to disengage the
>>      brake.
>>      >
>>      > At that point the telescope slewed to a position at dec +88
>>      and hour
>>      > angle ~2.
>>      > We don't know why this occurred, as we had not entered any
>>      targets
>>      > with coordinates near that region.
>>      >
>>      > Subsequently the telescope would not respond to any commands
>>      to move
>>      > (slews, zenith command, paddle)
>>      >
>>      > We tried restarting the TCS program but also no change. 
>>      Eventually we
>>      > decided to end observations for the night.
>>      >
>>      >
>>      > ------------------------------
>>      >
>>      > Submitted on 2020 Feb 20 [4:42:56]
>>      >
>>      > Observer Contact Email: ds at astro.columbia.edu
>>      > (Note: thiswill not appear in versions of the trouble report
>>      archived
>>      > online)
>>      > _______________________________________________
>>      > ASTRO-mdm-trouble mailing list
>>      > ASTRO-mdm-trouble at lists.osu.edu
>>      > https://lists.osu.edu/mailman/listinfo/astro-mdm-trouble
>>      >
>>      >
>>      >
>>      >
>> 
>>      --------------------------------------------------------
>>      John R. Thorstensen
>>      Department of Physics and Astronomy
>>      Dartmouth College
>>      6127 Wilder Laboratory
>>      Hanover, NH 03755
>> 
>>      Office: 239 Wilder Hall
>>      Phone:  603 646 2869     Fax: 1446   Hinman Box 6127
>>      --------------------------------------------------------
>>      _______________________________________________
>>      ASTRO-mdm-trouble mailing list
>>      ASTRO-mdm-trouble at lists.osu.edu
>>      https://lists.osu.edu/mailman/listinfo/astro-mdm-trouble
>> 
> 
> --------------------------------------------------------
> John R. Thorstensen
> Department of Physics and Astronomy
> Dartmouth College
> 6127 Wilder Laboratory
> Hanover, NH 03755
> 
> Office: 239 Wilder Hall
> Phone:  603 646 2869     Fax: 1446   Hinman Box 6127
> --------------------------------------------------------