Date: Mon, 16 May 2005 09:16:04 -0700
From: Russell E Owen
Subject: Re: 2.5m obslog 20050513 (MJD 53504)
At 11:48 AM +0000 2005-05-14, Jurek Krzesinski wrote:
>Problems:
>---------
>We managed to confuse mechanicals on sp1, while changing exposure time:
>instead increasing it to 1500s, we shortened it to 150s (typo). Solving
>that problem took 40 minutes of science time.
>
>  >...
>----------------------------------------------
>Issuing goStare science with 1500 exposure
>2005-05-14 10:08:22Z: There is an aborted exposure on sp1.
>sp1 cameraNag {} t-g-sdss-2.apo.nmsu.edu 2200
>sp2 cameraNag {} t-g-sdss-2.apo.nmsu.edu 2200
>Flushing charge for 15 sec
>mcpPut: SYSTEM.STATUS
>2005-05-14 10:09:06Z: Original command was !e1500!
>2005-05-14 10:09:06Z: expected reply was !e1500
>OK
>!
>Mechanicals did not respond correctly; response was e1500
>failed: { already exposing }
>
>goStare was not successful, trying again
>Mechanicals did not respond correctly; response was e1500
>failed: { already exposing }
>-------------------------------------------------
>
>Also we couldnd't drop instruments. Hmmm - maybe sos was confused? We did exit
>from the sop window and tried  goStare on the coopilot computer. No, the error
>message was the same as above. We issued andother mechSend s and this time
>noticed that the shuter open and closed sensors were both off on the sp1:
>
>sp1> mechSend s
>spMechVersion v2_5_0
>Bootup 719771169
>SpectroID 1
>SlitID 40
>Air On
>Shutter_open_sensor Off
>Shutter_closed_sensor Off
>Left_open_sensor On
>Left_closed_sensor Off
>Right_open_sensor Off
>Right_closed_sensor On
>
>So we rebooted mechanicals on sp1 hopping that that will clear the problem.
>Unfortunately it didn't. We called Joh B. He asked us to check if the presure
>is fine? it was, if there is any hissing sound (air leak)?  there wasn't,
>so we rebooted mechanicals again and ... this time shutter sensors were
>set properly:
>
>sp1> mechSend s
>spMechVersion v2_5_0
>Bootup 719771169
>SpectroID 1
>SlitID 40
>Air On
>Shutter_open_sensor Off
>Shutter_closed_sensor On
>Left_open_sensor Off
>Left_closed_sensor On
>Right_open_sensor Off
>Right_closed_sensor On
>
>We started sucessfuly the exposure, but the seeing was terrible
>and the efficiency marginal. The exposure was read out properly, but
>s/n was time due to the problem, well the last 20 minutes were in twilight with
>very bad seeing conditions.
Sorry for that last message; I found the details. Now...anybody know
how to get to a log of what was received from (and/or sent to)
specMech? It would be very interesting to see the details of the
exposure abort. Clearly it got into a nasty state.
It would also be worth testing some manual exposure aborts.
-- Russell