From sean@magnolia.spole.gov Mon Feb 19 05:16:48 1996 Return-Path:Received: from aspen.spole.gov by belmont.astro.nwu.edu (4.1/SMI-4.1) id AA03119; Mon, 19 Feb 96 05:16:18 CST Received: from magnolia.spole.gov (magnolia.spole.gov [199.4.250.1]) by aspen.spole.gov (8.6.9/8.6.9) with ESMTP id AAA15102; Tue, 20 Feb 1996 00:09:36 +1300 Received: (from sean@localhost) by magnolia.spole.gov (8.6.9/8.6.9) id AAA08590; Tue, 20 Feb 1996 00:13:56 +1300 Date: Tue, 20 Feb 1996 00:13:56 +1300 From: Sean Casey Message-Id: <199602191113.AAA08590@magnolia.spole.gov> To: C.J.TYLER@LaRC.NASA.GOV, DASTO@swales.com, casey@stars.gsfc.nasa.gov, houston@achamp.gsfc.nasa.gov, moseley@stars.gsfc.nasa.gov, novello@stars.gsfc.nasa.gov, r.c.elder@LaRC.NASA.GOV Subject: update Cc: al@hale.yerkes.uchicago.edu, davep@hale.yerkes.uchicago.edu, gee@hale.yerkes.uchicago.edu, jab@hale.yerkes.uchicago.edu, jdotson@belmont.astro.nwu.edu, joe@hale.yerkes.uchicago.edu, jss@oddjob.uchicago.edu, jwb@yerkes.uchicago.edu, lars@hale.yerkes.uchicago.edu, mrozek@hale.yerkes.uchicago.edu, novak@belmont.astro.nwu.edu, pernic@hale.yerkes.uchicago.edu, rdd@hale.yerkes.uchicago.edu, rfl@oddjob.uchicago.edu, sundwall@oddjob.uchicago.edu, wirth@hale.yerkes.uchicago.edu, yanny@sdss.fnal.gov Content-Length: 419 X-Lines: 18 Status: RO Day four and the dewar still has helium. Some snow accumulation on dewar window (dry & powdery) - can be blown off. Boil off nominal = 66 liter gas/hour (if you believe flow meter calibration) OVCS = 0.797 volts = 180 K (approx) IVCS = 1.020 volts = 77 K (approx) PC board = 1.517 volts = 7.25 K (approx) On board resistor = 250 kOhms (450 kOhms = 4.2K, 260 kOhms = 7 K approx) Ambient Temp = 233 K (-40 C) SC