Filter and Grism Wheel Populations

• Arrangement of filter wheels
• Arrangement of slit wheel
• Arrangement of grism wheels
• Files to update after a filter/grism change

UIST Temperatures and Pressures

• Temperature plots – remote
• Temperature and pressure plots – more extensive, but can’t display remotely.
  • At the telescope: type dm all.dl. Note chan 2 and 3 pressures usually e-04 and e-07.
  • At home: login to OHI and tail /jac_logs/epics_data/uistLogs/uist.txt. Values are listed as Chan 1, Chan 2 (the array), HEATER (usually 20-30%), range, optics bench (slow to change), wiring pole, 1st stage cold-head (55K), 2nd stage cold-head (13K). The two stages on the cold-head (CCC) usual increase first, especially if its a cold-head problem or dead chiller/compressor.
• Cooldown plots:
  • 2006 LN2 Precool
  • 2006 Full 3-day cool
  • Old plot (2002)Note CCC stages cool fastest. The May ’07 warmup is here: 5-day plot
• Cryostat Control Software (internal use only)
• Using the Turbovac Pump – mounted on UIST (photo available here).

Monitoring and Maintaining UIST’s Performance

• Brief ENGINEERING HISTORY
• Telescope APERTURES and FOCI
• Running UIST with UCLIENT (same as WFCAM) or a web version
• Checks after instrument put back on to the telescope
• Plots of array perfomance: readnoise and dark current
• Useful configuration files – where these are!

Miscellaneous

• Some PHOTOS of UIST – internal and external
• Array Readout, DAC Boards, Cabling and the Controller
• DOCUMENTS – Grims, Slit, Filter, controller, etc.
• Chris’ “anything and everything” notes…

UIST Issues & Problems

• SAMPLE EXPOSURES: What you SHOULD see, plus examples of weird images, etc.
• Clearing Ice from the UIST window – Procedure
• UIST/UFTI comparison on FS 146 (July 07)
• Blocking filters for IJ and JH grisms (August 06)
• Focusing the IJ and JH grisms with the slits+spacers (Feb 06)
• IJ/JH grisms and the bright arc… (June 05)
• RAW Dark frames & the infamous Dark Gradient (2004)

---