Changes
74 Inch
,/* Vacuum Pumping and LN2 filling: */
notes might not be 100% accurate……
===Checklist:===
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''TODO: CLI startup & general computer interaction''
[[File:SPUPFig1.JPG]]
Note in Fig. 1 keyboard/mouse peripherals have been omitted for clarity
==='''Vacuum Pumping and LN2 filling:'''===
# The day before, connect the vacuum pump using the 500mm long vacuum hose (see Fig. 1) and pump-down overnight.
# The next morning, check that the vacuum got down to the 10-6 mbar range.
# Continue filling slowly until full, indicated by LN2 boiling in the outer funnel. When full, using a glove, quickly remove the inner funnel and dump the excess LN2 back in the filling flask.
# Ensure that the telescope is switched OFF
# Mount the instrument on the telescope (mechanical responsibility)
'''Check out the software/instrument functionality:'''1. * Power up the SpUpNIC PC (if not already running).2. * Log in: User name: CCD - the usual password.3. * Launch the instrument software by single clicking on the two desktop icons (in the sidebar):
SpUpNIC SpUpNIC QuickLook
Note: You will be navigating between three tabs (top-left of Monitor 1) on the SpUpNIC Instrument Control GUI. Figs. 10, 11 & 12 show the Main View, Advanced and Engineering View tabs respectively.
The following three items are operated from the Main View tab, Panel 2 (Fig. 10). Select a value/number and click “Go”:
8. Do an ARC test exposure:a. Slit width 1.5” (slit setting 10).b. In the Main View tab, panel 2 (Fig. 10) check which grating is currently mounted and set the corresponding grating angle as per table 1:
Table 1: Suitable grating angle for a reasonable ARC exposure
Grating Number Angle