SHARC II START-UP
1. check that the detector temperature is <0.5 K
(At beginning of run, ask staff to do daily 3He fridge cycle of SHARC.)
2. log in to kilauea console with username sharc [or puuoo console]
3. start uip
open up an xterm on kilauea [or puuoo]
kilauea% uip
uip> pundit true [if necessary]
if you DO NOT use the sharc UIP account, then use also run this command:
uip> cat sharccal.cat
4. open dome (control room) and make sure pointing east
pull the red stop button to open shutter and move telescope
check for possible collisions when slewing in ZA (ladders, sidecab, etc.)
close all doors toward telescope
uip> az 40
uip> za 45 [for DSOS initialization]
5. start DSOS server
open up another xterm on kilauea
kilauea% ssh visitor@128.171.86.102 [ask staff for password]
tpick% ./DSOSdaemon
tpick% ./DSOSserver
6. check mirror position, optical path and filter wheel.
to move tertiary mirror: uip> tertiary /nasmyth2
filter wheel: "250" = 350 microns, "500" = 450 microns, "750" = 850 microns
to get the heterodyne calibration load out of the beam: uip> vane /out
7. power up sharcii
- alidade power controller (charge->operate)
at instrument, will get two green lights and a yellow
- throw power switch on instrument to "ON"
this should light up an additional two red lights on instrument
8. configure amplifier electronics and mulitplexer
open up new xterm on kilauea
kilauea% ssh sharc@sharcii [ask staff for password]
sharcii% cd ~/fpga
sharcii% go
9. reset sharcii DSP
restart the dsp code
sharcii% cd ~/DSP
sharcii% sharcDSP [wait a minute]
sharcii% s2
SHARC2> status [should have 12 12's and 2 36's]
SHARC2> status [make sure UT is updating]
SHARC2> quit
If the UT is not updating, try again a few times. If that still
doesn't work, go to: DSP help page
10. start IRC
server:
sharcii% cd ~/irc
sharcii% sharcServer
client:
open another xterm on kilauea
kilauea% cd irc
kilauea% sharcClient [Use sharcClientTest for SHARP (2007 Apr).]
The messages about the polarimeter being unavailable are normal.
Please fill out Observation Options fields (wavelength, observer, project).
11. in sharcClient, click "hardware level"
**********************************************************************
DSOS START-UP
When dome has been open for 1 hr and sun is down, start active surface correction
12. set telescope zenith angle to 45 degrees (should be there already)
uip> za 45
13. set up monitoring for active surface corrections and initialize it
in the window you opened earlier:
tpick% ./DSOSmonitor
log in to tpick with another xterm on kilauea:
kilauea% ssh visitor@128.171.86.102
tpick% ./DSOSinit
14. power to drive amplifiers on 3rd floor
a. turn on power supplies for all 8 supplies
b. press menu on each of the 8 supplies
c. in pairs, simultaneously press enter
15. wait for DSOS temperatures to settle
all but 1-3 readings will be white
16. start active surface control
tpick% ./DSOSagent
17. wait for all but 1-3 DSOS temperatures to settle before observing
**********************************************************************
SHARC II OBSERVING
18. to help pick calibrator, on kilauea:
kilauea% orrery
19. setup telescope for sharc ii and focus
uip> inst sharc2
uip> planet uranus OR uip> observe cal_crl2688 [for example]
If ephemeris is out of date, add /jpl option at end of planet command.
*** NOTE: All fixed calibrators have names that start with ***
*** CAL_ so you can type uip> ver cal_* to see all of them ***
*****always level hardware before starting a new exposure*****
uip> SWEEP 30 20 /Y 20 14.142 /ALT
set integration time in irc client: 120 sec
if calibrator is really bright (Jupiter, Saturn, Mars at opposition), offset to level hardware:
uip> azo 300
level hardware
uip> azo 0
to focus:
uip> focus /offset -0.40 (need to find best value)
20. find offsets from pointing data
until 7:30 pm or so check focus every 30-45 min
if too "horizontal" (major axes at 2 o'clock and 8 o'clock), use more
negative offset
quicklook:
kilauea% cd ~/src/crush [sharc account]
kilauea% crush -point XXXXX [five digit scan number]
update fazo and fzao from quicklook program
UIP> fazo -101.2
UIP> fzao -12.0
alternate quicklook:
kilauea% cd [sharc account]
kilauea% sharcpoint XXXXX
update fazo and fzao from quicklook program
UIP> fazo -101.2
UIP> fzao -12.0
21. Enter new source to UIP catalog:
Edit source catalog directly, using other sources as an example.
Some catalogs are in ~sharc/.uip/cat
**********************************************************************
CHOPPED OBSERVING (rarely used)
22. start chopper
UIP> SEC 36.5 1.388888 4 4
wait until chopper values stop flashing on the display
can watch on the oscilloscope
23. to observe using slow sweep command
UIP> SWEEP 30 70 /Y 20 50 /ALT
for calibrator, set integration time in irc client: 120 sec
24. data reduction
% ssh sharc@champinux
champinux% sharcchop XXXXX
update fazo and fzao from quicklook program
UIP> fazo -101.2
UIP> fzao -12.0
25. stop chopper
UIP> SEC /STOP
**********************************************************************
CRUSH DATA REDUCTION
26. On kilauea, logged in as sharc:
cd ~/src/crush
27. For faint sources:
crush -deep scan#1 scan#2 ....
For medium sources:
crush scan#1 scan#2 ....
For bright sources:
crush -bright scan#1 scan#2 ....
28. Output images are stored in:
~/src/data/
View with ds9:
ds9 imagename.fits &
**********************************************************************
SHUT DOWN
29. Start closing shutter -- takes the longest.
30. Park the telescope with UIP> STOW
If the Sun is up, wait until the shutter is most of the way closed before this command.
31. Power off sharcii -- power switch on instrument to OFF
alidade power controller to charge mode
32. DSOS:
ctrl-c to exit DSOSagent
Run ./DSOSbase, wait a couple of minutes,
then turn off DSOS power supplies.
33. Turn off scanning: UIP> SWEEP /STOP
34. Turn off chopper, if necessary: UIP> SEC /STOP
35. Exit sharcClient with File/Exit in Instrument Remote Control window.
36. Type exit in sharcServer window.
37. If the staff isn't doing the 3He cycle, set up a delayed cycle.
38. Report observatory problems to the staff, SHARC II instrument problems to
sharc@submm.caltech.edu.
39. Push the red observatory stop button before you leave. Or, if you're
handing off to the next occupant, at least do: UIP> IDLE