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| == Setup the Bolometer == | == Setup the Bolometer: == |
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| == Sources Catalog == | == Sources Catalog: == |
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| <!> Pointing sources: '''J1419+240''' not 1419+240 | <!> Pointing sources: '''J1419+240''' not 1419+240. [[BR]] <!> Pako is ''case-sensitive'' for the source names. |
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| == Focus, pointing, Skydip == | == Focus, pointing, Skydip: == |
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| Pako> '''focus 1.1''' | Pako> '''focus 1.1''' [[BR]] |
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| Pako> '''set focus _sfcz_''' !''Correct the focus with _sfcz_. Correction from MOPSIC (@f or @fsn for weak sources)'' | 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 |
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| (!) 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)'' |
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| Pako> '''p40''' !''Short length pointing for weak sources+start'' [[BR]] Pako> '''p60''' !''Long length 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 larger than 30 mn. |
(!) Before each Onoff or map if they are longer than 30 mn. |
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| == Calibration == | == Calibration: == Calibration on a [primary|secondary] calibrator |
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| 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: {{{ |
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| Pako> catalog ihet Calibrator_Name Pako> p60 Pako> SET POINTING |
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 ... }}} <:( The '''set project Proj_Id''' will be necessary until it is automatically included in the source catalog. = Heterodyne Observation: = Heterodyne observations are more complex in the sense there is much more options available. Since the NCS/Pako are still under heavy development, we give here a typical session. Some commands are shared with bolometer observations. |
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. BR 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 ...
The set project Proj_Id will be necessary until it is automatically included in the source catalog.
Heterodyne Observation:
Heterodyne observations are more complex in the sense there is much more options available. Since the NCS/Pako are still under heavy development, we give here a typical session. Some commands are shared with bolometer observations.