Date: Thu, 17 Dec 2015 13:34:20 -0800 Subject: Re: [sloan-25mlog 2751] Re: 2.5m obslog 20151216 (SJD 57373) From: Connie Rockosi --001a114167bc1c666e05271ec9ef Content-Type: text/plain; charset=UTF-8 Great, thanks. Sorry, I missed John P's email about that in the flurry today. --Connie On Thu, Dec 17, 2015 at 12:57 PM, Dan Long wrote: > Hi Connie, > > As John P. mentioned earlier, this is basically covered by 2357, which > I filed sometime ago, though in its original scope was asking for the > guider to attempt to center rather than just display the image. Later > comments discussed the display aspect. > > Cheers, > > Dan > > > On Dec 17, 2015, at 1:36 PM, Connie Rockosi wrote: > > Ah, OK. So the acquisition fibers are dynamically detected. That's cool, > but as you say, opens us up to out-thinking ourselves when the info would > be useful for manual acquisition. > > Please file that specific ticket to display the acquisition fibers even if > they are not used for any of the automated code? > > Thanks, > Connie > > On Thu, Dec 17, 2015 at 12:30 PM, Dan Long wrote: > >> Hi Connie, >> >> The variable number of acquisition fibers isn't all that weird. Both >> of these fibers show significant degradation. A slight change in >> illumination or focus can put a fiber that is on the edge of having its >> edge circular outline being determined, over the edge. This has been seen >> in the past. >> >> It is somewhat annoying that the output from the disabled fiber isn't >> displayed in the processed image, since almost all of the time the star is >> actually visible and the observer can center up manually. I had actually >> thought that the image was displayed, but just had a red X over it, but I >> guess that is not the case (not sure where I saw this, maybe the guider >> movies). >> >> We plan to swap in new acquisition fibers tomorrow, so it will be >> back to full strength by the next time it is observed. >> >> Cheers, >> >> Dan >> >> On Dec 17, 2015, at 1:04 PM, Connie Rockosi wrote: >> >> Agreed about the sticky shutter probably causing the vertical streaks. >> >> I can't think off-hand of any reason the sticky shutter should make the >> acquisition fibers look like that, but >> it would be worth checking whether they looked like that last time >> cartridge 6 was used, and if not >> checking again next time it is used to make sure this isn't some weird >> sticky shutter effect. >> >> And a separate issue, as Renbin says, is whether the guider display knows >> about those two fibers or not. >> The log says there was one acquisition fiber last night and none tonight, >> which is certainly weird. >> >> --Connie >> >> >> On Thu, Dec 17, 2015 at 8:31 AM, Renbin Yan wrote: >> >>> HI Karen and Audrey, >>> >>> On Dec 17, 2015, at 8:13 AM, kinemuchi@apo.nmsu.edu wrote: >>> >>> Cart 6 did not have acquisition fibers tonight, but last night there was >>> one. >>> Please check if the lone acquisition fiber was dropped or broken. >>> >>> >>> From the raw guider image, it seems both acquisition fibers on cart 6 >>> are there, but both have pretty terrible shapes. >>> See attached image. Does the guider window not showing those two fibers? >>> If so, we need to file a ticket against it. It would be much easier to >>> find the field with the acquisition fiber images. >>> The guider actor ought to show them even if it cannot measure positions >>> of the star inside the bundle. >>> >>> Also, there are some vertical feature in the guider image. >>> >>> -renbin >>> >>> >>> >>> >>> -renbin >>> >>> -- >>> >>> Renbin Yan >>> >>> Assistant Professor >>> Department of Physics and Astronomy >>> 177 Chemistry-Physics Building >>> University of Kentucky >>> Lexington, KY, 40506-0055 >>> (1) 859-257-0795 >>> >>> >>> ____________________________________________________________ >>> 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 >> >> >> > > --001a114167bc1c666e05271ec9ef Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Great, thanks.Sorry, I missed John P&#= 39;s email about that in the flurry today.--Conni= eOn T= hu, Dec 17, 2015 at 12:57 PM, Dan Long w= rote:Hi Connie,=C2=A0 =C2=A0As John P. mentioned earlier, t= his is basically covered by 2357, which I filed sometime ago, though in its= original scope was asking for the guider to attempt to center rather than = just display the image.=C2=A0 Later comments discussed the display aspect. Chee= rs, = =C2=A0 =C2=A0 DanOn Dec = 17, 2015, at 1:36 PM, Connie Rockosi wrote:Ah, OK.=C2=A0 So the acquisition fibers are dynamicall= y detected.=C2=A0 That's cool, but as you say, opens us up to out-think= ing ourselves when the info would be useful for manual acquisition.Please file that specific ticket to display the acquisitio= n fibers even if they are not used for any of the automated code?Thanks,ConnieOn Thu, Dec 17, 2015 at 12:30 PM, = Dan Long wrote:Hi Connie,=C2=A0 =C2=A0The variable number of acquisition fibers isn't all that= weird.=C2=A0 Both of these fibers show significant degradation.=C2=A0 A sl= ight change in illumination or focus can put a fiber that is on the edge of= having its edge circular outline being determined, over the edge.=C2=A0 Th= is has been seen in the past.=C2=A0 =C2=A0It is s= omewhat annoying that the output from the disabled fiber isn't displaye= d in the processed image, since almost all of the time the star is actually= visible and the observer can center up manually.=C2=A0 I had actually thou= ght that the image was displayed, but just had a red X over it, but I guess= that is not the case (not sure where I saw this, maybe the guider movies).= =C2=A0 =C2=A0=C2=A0=C2=A0We plan to swap in new a= cquisition fibers tomorrow, so it will be back to full strength by the next= time it is observed. Cheers, =C2=A0 =C2=A0DanO= n Dec 17, 2015, at 1:04 PM, Connie Rockosi wrote:Agreed about the sticky shutter probably causing= the vertical streaks.I can't think off-hand o= f any reason the sticky shutter should make the acquisition fibers look =C2= =A0like that, butit would be worth checking whether they looked = like that last time cartridge 6 was used, and if notchecking aga= in next time it is used to make sure this isn't some weird sticky shutt= er effect.=C2=A0And a separate issue, as Renbin s= ays, is whether the guider display knows about those two fibers or not.The log says there was one acquisition fiber last night and none ton= ight, which is certainly weird.--ConnieOn Thu, Dec 17, 2015 at 8:31 AM, Renbin Yan wrote:HI Karen and Audrey,=C2=A0On Dec 17, 2015, at 8:13= AM, kinemuchi@= apo.nmsu.edu wrote:Cart 6 did not hav= e acquisition fibers tonight, but last night there was one.=C2=A0Please= check if the lone acquisition fiber was dropped or broken. =C2=A0From the raw guider image, it seems both acquisition= fibers on cart 6 are there, but both have pretty terrible shapes.See attached image. Does the guider window not showing those two fibers?= =C2=A0If so, we need to file a ticket against it. It would be mu= ch easier to find the field with the acquisition fiber images. =C2=A0= The guider actor ought to show them even if it cannot measure position= s of the star inside the bundle.=C2=A0Also, there= are some vertical feature in the guider image.=C2=A0-renbin-renbin--Renbin YanAssistant ProfessorDepartment of Physics and Ast= ronomy177 Chemistry-Physics BuildingUniversity of KentuckyLexin= gton, KY, 40506-0055(1) 859-257-0795= ____________________________________________________________ Logs of Nightly APO Activities https://trac.sdss.org/tracm= ailman/browser/private/sloan-25mlog/index.html ____________________________________________________________Logs of Nig= htly APO Activities https= ://trac.sdss.org/tracmailman/browser/private/sloan-25mlog/index.html --001a114167bc1c666e05271ec9ef--