BayTech PS-4A Troubleshooting Guide

FLAMINGOS at the KPNO 4-mAn Observer's GuideDick Joyce, Nick Raines, Richard ElstonVersion 2.39, 2013 April 23FLAMINGOS@4-m, Ver. 2.39, 2013 Apri

about 30 minutes there will be ~3 points in the Record Temperatures log file, and you can hit the Update button to plot the current temperature.During

III.Nightly Startup TasksA. FLAMINGOS SetupWe recommend that you carry out the following procedures prior to each night's observing.1. Restart al

4. Open the shortcuts menu. Many of the common FLAMINGOS commands which do not require arguments may now be run from a shortcuts menu on the mayall-

are printed out:OBS_TYPE Type of observation being taken; commonly used keywords are object, standard, flat, dark.OBJECT Name of object being observed

9. Execute Mirror Script on Mayall-2/3. Running the mirror script on one of the MacMinis (usually the one not used for observing) will automatically

4. Ask the telescope operator to Zero the telescope pointing.5. Verify optical alignment. During the first pointing check of the observing run, it is

It computes running difference images from which it computes the FWHM. You can use this to monitor the seeing during a sequence of observations. To

We frequently monitor the middle dome temperature, but there is also a truss temperature monitor that the telescope operator can read for you. It&apo

IV.Imaging with FLAMINGOSA. OverviewFLAMINGOS may be used for imaging through the J, H, K, and Ks band filters. Sky emission in these bands is variab

On the FLAMINGOS command line:config.dither.kpno.pl Set up a sequence of images dithered about a common pointing center.config.exposure.pl Set filena

ContentsI. FLAMINGOS + KPNO 4-m OverviewII. Starting FLAMINGOSIII.Nightly Startup TasksA. FLAMINGOS SetupB. Startup on the SkyIV.Imaging with FLAMINGO

printed to the screen. Do not hit the Update All Items button on the UFSTATUS GUI during execution of either of these scripts. It is, however, a goo

dither pattern, and it will ask you to type either HOME or CLEAR before beginning to execute the dither pattern.If you have any offsets showing on the

~4mguest/bin/Example.many.scripted.darks.cshNote that the blank lines are very important!Also, be very certain to check later that the script comple

V.Taking Spectra with FLAMINGOSA. OverviewFLAMINGOS may be used for obtaining long slit or multi-object slit spectra; please see § I. FLAMINGOS + KPNO

Figure 4: Schematic of the UF 3pix long slit (left) and NOAO slit (right). The acquisition box for the NOAO slit is 10 arcsec square at the 4-m. Th

The following commands are used for long slit and MOS plate spectroscopy:On the Flamingos command line:config.exposure.pl Set up the filename and expo

C. Long Slit or MOS Plate Alignment1. Set instrument PA before acquiring target.• This must be done first, as the telescope must be at zenith in order

9. [NOAO slit in mask] Center the target.• The Decker wheel should already be in the mos position.• Move the slit mask into the beam using config.

estimated location of the box along the bottom of each cut, along with a horizontal threshold level through the cut, and a vertical line indicating th

• If targets are faint, you may need to offset a small amount (20") and work with a scaled difference image. See the comments at the end of this

I. FLAMINGOS + KPNO 4-m OverviewFLAMINGOS is the FLoridA Multi-object Imaging Near-ir Grism Observational Spectrometer. This manual provides the user

16.Remeasure the boxes with imexam and make a new box file, if a tweak.mos.pl was required previously.17.Run xbox on the latest image:• Set the parame

• Make certain the PA is correct.• Set M_RPTPAT to the number of times to repeat the pattern.• Set M_THROW, the distance in arcseconds between the A &

science target spectra. The alignment of the slit, filter and grism should not have been changed from that used for the science target. It should ta

• Turn on the flatfield projector on the telescope using the Bright lamps at maximum setting.2. Set filename and exposure time. Use config.exposure.pl

VI.Shutting Down at the End of the NightAt the end of a long and (we hope!) productive night of observing, there are a few things that need to be done

VIII.Troubleshooting1) Problem: The image looks funny. You can see all 32 amplifiers, and the signal level is ~58,000 ADU; the preceding or followi

casts a large amount of thermal radiation on the lower right hand corner of the array.c) Check that the MOS dewar temperature is lower than 200 K. I

Trying 140.252.53.86...Connected to baytech.Escape character is '^]'. RPC-3 Telnet Host Revision F 4.20a, (C) 1999 Bay Technical As

the left-hand rack, the other below the perle on the right-hand rack (Figure 6, below). Each has two small toggle switches, which must be set so that

5) Problems when running engineering.config.filter.grism.decker.wheels.pl [Initialize Wheels], config.rel.mv.filter.grism.decker.wheels.pl [Move Wheel

Spectral CharacteristicsFilter / Grism CombinationBand R = λ / δλ(2 pix slit)Dispersion(Å/pixel)R = λ / δλ(3 pix slit)JH + JH-grism J 1400 4.69 960H

IX.Contacts & Further Information1. Dick Joyce, Ron Probst, and/or Nick Raines will help new observers during their first night of observing with

Appendix 1: FLAMINGOS Command Listing and Short Description of FunctionA. Basic Instrument Configuration Commandsconfig.exposure.pl Set object, fileb

F. Resetting the Array Controller (MCE4), the Motor Controller, and the PerleFrom flamingos1a:1. telnet baytech userid: mce4pow, motorpow,

H. Instrument Engineering Commandscenter.of.rotation.pl Determine the center of rotation from 3 points.config.location.pl Copy the correct Flamingos F

Appendix 2: Readout SchematicFLAMINGOS@4-m, Ver. 2.39, 2013 April 23 Page 44 of 47Figure 7: Array Readout Timing. All 4 quadrants of the array are r

Appendix 3: XBOX Default Parameter List for Instrument at PA = 90 degreesPACKAGE = ucsclrisTASK = xboximage = target.0001 imageinput = box1 input fil

Appendix 4: Additional Notes on MOS PlatesAn example MOS plate for use at the 4-m is shown adjacent, in Figure 8, at approximately full size (~105 mm

Appendix 4: Additional Notes on MOS Plates: A Figure of the MOS Wheel, Useful When Loading PlatesMOS Position PA

Data Analysis: An IRAF session will be running on flamingos1a. Simple analysis tasks such as quick image arithmetic, image stacking, and image stati

FLAMINGOS@4-m, Ver. 2.39, 2013 April 23 Page 6 of 47Figure 1: FLAMINGOS Functional Diagram. The relative layout and connections between the various

Halting A Script: Never type Ctrl-C . It is much safer to suspend a job with Ctrl-Z. Then you can kill the script by typing jobs, and kill -9

II.Starting FLAMINGOSWhen you arrive at the 4-m telescope, you may have to bring up the FLAMINGOS windows and initialize the system (this should have

automatically appear in the upper left corner (or now in the upper small monitor).6. You are now ready to initialize FLAMINGOS! This is done by runni