UMIGS Observations

Observations

Checklist

Version without all the explanations. The italicized words are variable inputs set from the source table or depending on weather conditions. The left side is a description of the task, the right is what is typed into the computer. You may enter multiple commands on a line.

1. Pointing

Acquire a source (not a planet) MAIN NAME Ptg Sou (see table)
REF SAME AZOFF -.2

Set line LINE SIO-4 LSB
Set backend CONF 1 COR CBAND 20

2. APOINT

Set integration times (TMAIN=TREF always) TMAI time TREF time (see table)
RPT 1

Set multiple refs (can set OFFS 0 in very good weather) OFFS 1

Set APWE according to conditions APWE weather

Do a calibration and start APOI REF STAR CAL STAR APOI

Pointing results may be checked from the green Modgraph terminal at the observatory, or on SCREEN 19. While pointing, set the MAP inputs as necessary.

3. MAP

Set 1st map position offset in footprints XOFF XOFF YOFF 0 (see table)

Set footprint separation in pixels DX 0.5 DY 0.5

Set map size in footprints NX NX NY 1 SKIP 0 (see table)

Set number of scans between calibrations (a factor of NX, typically 3 or so for poor weather, up to 10 in good) NCAL scans

One scan per footprint GRID 1

For the brightest galaxies in ¹²CO, set NMAIN > NX to observe the MAIN position (0,0) at start and end of map. NMAI 0

Set double position switch mode (DPS). RAST 0

Set back to spectroscopic mode if you pointed with a planet. Don't change while pointing! SPEC

Set integration times. Don't change while pointing! TMAI 15 TREF 15 RPT 3

Map in RA. Don't change while pointing. KMAP 4

Track on pixel 11 unless the array inverts (then track on pixel 6). Set this before or after pointing, but not during. QSEL ALL

Rotate array and mapping angle (wait till APOI finishes to set this, or set it before running APOI) ROTANG PA-90
QANG EQUA PA-90 (see table). Set this before or after pointing, but not during.

4. Mapping

Acquire a source MAIN NAME Sou (see table)
REF SAME AZOFF -.2

Set line: ¹³CO or ¹²CO
(Enter only one of these lines) LINE (13)CO-1 USB
LINE CO-1 USB

Set backend CONF 1 QEF

Figure out how many maps you can make, start mapping, and put the telescope in its "safe" position. STAR MAP (STAR MAP STAR MAP ...) DROP

Back to User's Menu

Acquire a source (not a planet)	MAIN NAME Ptg Sou (see table) REF SAME AZOFF -.2
Set line	LINE SIO-4 LSB
Set backend	CONF 1 COR CBAND 20

Set integration times (TMAIN=TREF always)	TMAI time TREF time (see table) RPT 1
Set multiple refs (can set OFFS 0 in very good weather)	OFFS 1
Set APWE according to conditions	APWE weather
Do a calibration and start APOI	REF STAR CAL STAR APOI

Set 1st map position offset in footprints	XOFF XOFF YOFF 0 (see table)
Set footprint separation in pixels	DX 0.5 DY 0.5
Set map size in footprints	NX NX NY 1 SKIP 0 (see table)
Set number of scans between calibrations (a factor of NX, typically 3 or so for poor weather, up to 10 in good)	NCAL scans
One scan per footprint	GRID 1
For the brightest galaxies in ¹²CO, set NMAIN > NX to observe the MAIN position (0,0) at start and end of map.	NMAI 0
Set double position switch mode (DPS).	RAST 0
Set back to spectroscopic mode if you pointed with a planet. Don't change while pointing!	SPEC
Set integration times. Don't change while pointing!	TMAI 15 TREF 15 RPT 3
Map in RA. Don't change while pointing.	KMAP 4
Track on pixel 11 unless the array inverts (then track on pixel 6). Set this before or after pointing, but not during.	QSEL ALL
Rotate array and mapping angle (wait till APOI finishes to set this, or set it before running APOI)	ROTANG PA-90 QANG EQUA PA-90 (see table). Set this before or after pointing, but not during.

Acquire a source	MAIN NAME Sou (see table) REF SAME AZOFF -.2
Set line: ¹³CO or ¹²CO (Enter only one of these lines)	LINE (13)CO-1 USB LINE CO-1 USB
Set backend	CONF 1 QEF
Figure out how many maps you can make, start mapping, and put the telescope in its "safe" position.	STAR MAP (STAR MAP STAR MAP ...) DROP