From: =?UTF-8?B?Sm9zw6kgU8OhbmNoZXotR2FsbGVnbw==?= Date: Wed, 3 Sep 2025 10:16:49 -0500 Subject: Re: [sloan-25mlog 7868] 2.5m obslog 20250902 (SJD 60921) --000000000000026f95063de71810 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Regarding the fiducial remapping, the problems we had with the oscillations made the data we took a bit confusing, but we definitively were able to change the IDs the MCP assigns to the different markers. I found a small bug in the math which I hope accounts for why the IDs were not exactly what I expected. We also had a number of cases in which the tlatch process crashed with segfault while moving. These may be related to my changes but I'm not sure how, or maybe they are related to the oscillations. If the oscillations are fixed today it would be good to try the new fiducials during the day if somebody can help me with that. Thanks, Jos=C3=A9 On Sep 3, 2025 at 03:51:24, Kaike Pan via sloan-25mlog wrote: > > APACHE POINT OBSERVATORY SDSS 2.5M > > OBSERVING LOG > Tuesday September 02, 2025 > > (SJD 60921) > > ---- Observing Team ---- > > Kaike Pan > > Jose Sanchez-Gallego > > ---- Observing Plan ---- > > ventilate the telescope driving surfaces. > Work on the rotator fiducial crosses with Jose. > Test setup engCamera and guiderActor. > > ---- Observing Log ---- > > Jose cut a new version of MCP aiming to have sequential crossing fiducial > IDs while rotator moves in the same direction. We took some useful data > with it, but didn't finish the test because rotator oscillates while move= s > in the positive direction (at altitude 30, it moves fine in the negative > direction, no oscillations seen while moving from 0 to -185 degrees). > > I tried to setup the engineering camera and take some test images. > Software, ecmaeraICC and guiderActor (which will be use to measure ecamer= a > images) started fine, but I cannot talk to the engineering camera. Try pi= ng > the camera at 10.25.1.71 and three converters at 10.25.1.12, 10.25.1.13, > 10.25.1.14. All these IPs could not be reached. I left ecameraICC and > guiderActor running. Will try to connect to the camera today with help fr= om > day staff. > > Ventilated the driving surface for the whole night. 12 hours. > > > _______________________________________________ > Logs of Nightly APO Activities > > https://urldefense.com/v3/__https://mailman.sdss.org/archives/list/sloan-= 25mlog@sdss.org/message/3JWFGWD2R5GUFXVGJVJ3VKBJ4C377WI4/__;!!K-Hz7m0Vt54!k= pXkKC_2-jGqX0N7pcn3qFvpSUg89GWbIXx26pBSp3IO9PYp1gfx8ZBGxxvqNICuQF7Az1aEsOER= jsq4fh4d8Q$ > > --000000000000026f95063de71810 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Regarding the fiducial remapping, the problems we had with the oscillat= ions made the data we took a bit confusing, but we definitively were able t= o change the IDs the MCP assigns to the different markers. I found a small = bug in the math which I hope accounts for why the IDs were not exactly what= I expected. We also had a number of cases in which the tlatch process cras= hed with segfault while moving. These may be related to my changes but I= 9;m not sure how, or maybe they are related to the oscillations.If the oscillations are fixed today = it would be good to try the new fiducials during the day if somebody can he= lp me with that.Thanks,Jos=C3=A9 On Sep 3, 2025 at 03:51:24, Kaike= Pan via sloan-25mlog wrote: =20 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0APACHE PO= INT OBSERVATORY SDSS 2.5M =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0OBSERVING LOG =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0Tuesday September 02, 2025 =C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0(SJD 60921)---- =C2=A0Observing Team = ----Kaike PanJose Sanchez-Gallego ---- Observing Pl= an ----ventilate the telescope driving surfaces.Work on the rot= ator fiducial crosses with Jose.Test setup engCamera and guiderActor. ---- Observing Log ----Jose cut a new version of MCP aiming = to have sequential crossing fiducial IDs while rotator moves in the same di= rection. We took some useful data with it, but didn't finish the test b= ecause rotator oscillates while moves in the positive direction (at altitud= e 30, it moves fine in the negative direction, no oscillations seen while m= oving from 0 to -185 degrees). I tried to setup the engineering cam= era and take some test images. Software, ecmaeraICC and guiderActor (which = will be use to measure ecamera images) started fine, but I cannot talk to t= he engineering camera. Try ping the camera at 10.25.1.71 and three converte= rs at 10.25.1.12, 10.25.1.13, 10.25.1.14. All these IPs could not be reache= d. I left ecameraICC and guiderActor running. Will try to connect to the ca= mera today with help from day staff. Ventilated the driving surface= for the whole night. 12 hours. _______________________________= ________________Logs of Nightly APO Activities https://urldefense.com/v3/__https://mailman.sdss.org/archives/list/sloan-2= 5mlog@sdss.org/message/3JWFGWD2R5GUFXVGJVJ3VKBJ4C377WI4/__;!!K-Hz7m0Vt54!kp= XkKC_2-jGqX0N7pcn3qFvpSUg89GWbIXx26pBSp3IO9PYp1gfx8ZBGxxvqNICuQF7Az1aEsOERj= sq4fh4d8Q$ --000000000000026f95063de71810--