Bolometer's Observation:

The most important commands of the old system have been adapted to the NCS. Here is a typical starting sequence for the bolometer.

Setup the Bolometer:

Pako> @wbolo ! Mambo2, central pixel 53, short onoff (@onf4)

Sources Catalog:

Pako> catalog source pool ! Setup the project source catalog BR Pako> catalog source ihet ! Setup the pointing/calibration source catalog

Pointing sources: J1419+240 not 1419+240. Pako is case-sensitive for the source names.

Focus, pointing, Skydip:

Pako> focus 1.1 BR Pako> start ! Start the focus BR Pako> set focus sfcz !Correct the focus with sfcz. Correction from MOPSIC (@f or @fsn for weak sources) BR Do a focus when atmospheric conditions are changing, typically after sunset/sunrise

Pako> p40 !Short pointing for weak sources+start BR Pako> p60 !Long pointing for strong sources+start BR Pako> set pointing azcor elcor !Correct the pointing with azcor and elcor. Correction from MOPSIC (@p or @psn for weak source)

Before each Onoff or map if they are longer than 30 mn.

Pako> bt !Skydip at the current azimuth+start

Every 2 hours in stable atmospheric condition.

Before an Onoff, be sure you are pointing with the right pixel (20).

Calibration:

Calibration on a [primary|secondary] calibrator

Pako> @wbolo BR Pako> catalog ihet Calibrator_Name BR Pako> p60 BR Pako> set pointing azcor elcor BR Pako> @onf4 ! Shor Onoff integration (4 Subscans of 10 s)

You may do a short @onf4 after a normal pointing to monitor the pointing source flux.

Onoff and Map:

Pako>@onf 20 30 !Perform an on-off integration of 20 subscans of 60s with a wobbler throw of 30" BR Pako> @onf30 !Some project may have their own on-off macro

Don't try to make very long integration, you may loose the complete scan. In such a case use a loop.

Pako> bmap laz lel elstep azv !Setup an OTF map of laz azimuth length, lel elevation length, elstep elevation step and azv azimuth speed (arcsec/s). BR Pako> start !Start the map after you checked it is correct (it gives you the total integration time).

The speed should not be larger than ~8 arcsec/sec

NOTE: BR @roff20 : set the pixel 20 for on-off (most sensitive one). BR @roff53 : set the central pixel 53 (default with @wbolo) BR BR

A typical starting session could be as following:

Pako> @wbolo
Pako> source Mars
Pako> gain 2    ! special case for Mars, normal gain is 10
Pako> @p60
Pako> bt     !skydip
Pako> @p60
Pako> set pointing 2. -6.
Pako> focus 1.1
Pako> start
Pako> set focus -3.5
Pako> @onf4  ! Measure the flux of Mars

Pako> gain 10.
Pako> @wbolo
Pako> set project 175_05   
Pako> catalog source ihet
Pako> source J0854+201    ! Pointing source 
Pako> @roff20
Pako> p40
Pako> set pointing 0.4 -6.4
Pako> @onf4   ! Why not ?
Pako> catalog source pool
Pako> source 0927+2001  !Project source 
Pako> @onf 20 35  ! Do an on-off integration of 20 subscans of 60s with a wobbler throw of 35¨
Pako> Ad Nauseam ...