Date: Fri, 12 Jun 2015 15:13:23 -0700 Subject: Re: [sloan-25mlog 2340] Re: 2.5m obslog 20150610 (SJD 57184) From: Constance Rockosi --089e0102f4569b511a0518596af8 Content-Type: text/plain; charset=UTF-8 Thanks, Karen and Dmitry, for sorting that out. Everything looks funny at 3am, sometimes... --Connie On Fri, Jun 12, 2015 at 3:01 PM, Karen Kinemuchi wrote: > Also, Kaike clarified to me the slop in the residual can be as much as 0.5 > degrees, so if the residuals from consecutive issuances of the command are > within 0.5 degrees, then it is considered "consistent" and okay (assuming > no ring adjustment was done). It just appears a bit worrisome at 3am when > we are doing a blue ring adjustment and you see numbers like 4.3 and 3.9 > showing up. These are within that tolerance of 0.5 degrees of slop, so > technically the consecutive issuance of the sop collimateBoss command was > producing consistent results (with no ring adjustment in between). > > Hope that clarifies. > Cheers, > Karen > > On Jun 12, 2015, at 8:42 AM, Dmitry Bizyaev wrote: > > > Hi John, > > we discussed with Karen yesterday and concluded that > > collimateBoss yields consistent information, given > > the measurement noise of a few hundred pistons steps. > > There is no need to file a ticket, and we will work on > > clarifying the collimation procedure more in the nearby > > days. > > > > Cheers, > > -dmi3 > > > > > >> Could you please clarify what you meant regarding this statement in > >> Wednesday night's observing log? > >> > >> On 11Jun 2015, at 07:44, kinemuchi@apo.nmsu.edu wrote: > >> > >>> APACHE POINT OBSERVATORY SDSS 2.5M > >>> > >>> OBSERVING LOG > >>> Wednesday June 10, 2015 > >>> > >>> (SJD 57184) > >>> > >>> ---- Observing Team ---- > >>> > >>> Katie Grabowski > >>> Karen Kinemuchi > >>> > >>> Clearly, the sop collimateBoss command is not giving us consistent > >>> information when the blue rings are not adjusted. We wonder if this > >>> command is giving us the correct information in the first place. > >> > >> Did you mean that collimateBoss was not computing the correct collimator > >> or ring moves? Could someone please either file a ticket, or tell me > more > >> about what was going on? > >> > >> John > >> > >> -- > >> ************************* > >> John Parejko > >> john.parejko@yale.edu > >> http://www.astro.yale.edu/~jp727/ > >> 203 432-9759 > >> JWG 465 > >> Department of Physics > >> Yale University > >> New Haven, CT > >> ************************** > >> > >> > >> > >> > >> > >> > >> ____________________________________________________________ > >> Logs of Nightly APO Activities > >> > https://trac.sdss.org/tracmailman/browser/private/sloan-25mlog/index.html > >> > > > > > > ____________________________________________________________ > Logs of Nightly APO Activities > https://trac.sdss.org/tracmailman/browser/private/sloan-25mlog/index.html > --089e0102f4569b511a0518596af8 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Thanks, Karen and Dmitry, for sorting that out.Everything looks funny at 3am, sometimes...--ConnieOn Fri, Jun 12, 2015 at 3:01 PM, Karen Kinemuchi &l= t;kinemuchi@apo= .nmsu.edu> wrote:Also, Ka= ike clarified to me the slop in the residual can be as much as 0.5 degrees,= so if the residuals from consecutive issuances of the command are within 0= .5 degrees, then it is considered "consistent" and okay (assuming= no ring adjustment was done).=C2=A0 It just appears a bit worrisome at 3am= when we are doing a blue ring adjustment and you see numbers like 4.3 and = 3.9 showing up.=C2=A0 These are within that tolerance of 0.5 degrees of slo= p, so technically the consecutive issuance of the sop collimateBoss command= was producing consistent results (with no ring adjustment in between). Hope that clarifies. Cheers, Karen On Jun 12, 2015, at 8:42 AM, Dmitry Bizyaev wrote: > Hi John, > we discussed with Karen yesterday and concluded that > collimateBoss yields consistent information, given > the measurement noise of a few hundred pistons steps. > There is no need to file a ticket, and we will work on > clarifying the collimation procedure more in the nearby > days. > > Cheers, > -dmi3 > > >> Could you please clarify what you meant regarding this statement i= n >> Wednesday night's observing log? >> >> On 11Jun 2015, at 07:44, kinemuchi@apo.nmsu.edu wrote: >> >>>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 APACHE POINT 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 OBSERVING 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=A0Wednesday June 10, 2015 >>> >>>=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 57184) >>> >>> ----=C2=A0 Observing Team ---- >>> >>> Katie Grabowski >>> Karen Kinemuchi >>> >>> Clearly, the sop collimateBoss command is not giving us consis= tent >>> information when the blue rings are not adjusted.=C2=A0 We won= der if this >>> command is giving us the correct information in the first plac= e. >> >> Did you mean that collimateBoss was not computing the correct coll= imator >> or ring moves? Could someone please either file a ticket, or tell = me more >> about what was going on? >> >> John >> >> -- >> ************************* >> John Parejko >> john.parejko@yale.edu= >> http://www.astro.yale.edu/~jp727/ >> 203 432-9759= >> JWG 465 >> Department of Physics >> Yale University >> New Haven, CT >> ************************** >> >> >> >> >> >> >> ____________________________________________________________ >> Logs of Nightly APO Activities >> https://trac.sdss.= org/tracmailman/browser/private/sloan-25mlog/index.html >> > > ____________________________________________________________ Logs of Nightly APO Activities https://trac.sdss.org/tracm= ailman/browser/private/sloan-25mlog/index.html --089e0102f4569b511a0518596af8--