|
Size: 1093
Comment:
|
Size: 7806
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 1: | Line 1: |
| = Bolometer's Observation: = | [[Anchor(top)]] [[TableOfContents(3)]] Back to Pool page: PoolObserving '''''Important: these notes are specific for observation in the Pool -- they are not the general Pako Cookbook!''''' = Bolometer Observation = |
| Line 3: | Line 12: |
| Currently we are using the 117 channels MAMBO2 bolometer built at the MPfR in Bonn (Germany) by the group of Ernst Kreysa. | |
| Line 5: | Line 15: |
| Line 6: | Line 17: |
| Pako> @wbolo !'' Mambo2, pixel 20, short onoff (@onf4)'' | Pako> '''@wbolo''' !'' Mambo2, central pixel 53, short onoff (onf4), setup the bolometer commands'' == 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]] |
| Line 9: | Line 26: |
| == Sources Catalog == Pako> catalog source pool ! ''Setup the project source catalog'' [[BR]] Pako> catalog source ihet ! ''Setup the pointing/calibration source catalog'' |
== Skydip, pointing, focus == Pako> '''bt''' !''Skydip at the current azimuth+start'' (!) Every 2 hours in stable atmospheric condition. <!> '''NOTE: For NCS testing use p90 or p120 for pointing'''[[BR]] 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)'' |
| Line 14: | Line 38: |
| <!> Pointing sources: '''J1419+240''' not 1419+240 | Pako> '''bf''' ''Perform 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 |
| Line 17: | Line 43: |
| == Focus, pointing, Skydip == === === Pako> focus 1.1 Pako> start ! ''Start the focus'' [[BR]] (!) Do a focus when atmospheric conditions are changing, typically after sunset/sunrise |
|
| Line 23: | Line 44: |
| Pako> p40 !''Short length pointing for weak sources+start'' [[BR]] Pako> p60 !''Long length pointing for strong sources+start'' [[BR]] (!) Before each Onoff or map if they are larger than 30 mn. |
<!> Before an Onoff, be sure you are pointing with the right pixel (20).[[BR]] <!> Do a pointing before each Onoff or map if they are longer than 30 mn. |
| Line 27: | Line 47: |
| Pako> bt !''Skydip at the current azimuth+start'' [[BR]] (!) Every 2 hours in stable atmospheric condition. |
[:CookbookPako#top:Top] |
| Line 31: | Line 50: |
| <!> Before an Onoff, be sure you are pointing with the right pixel (20). | == Calibration == Calibration on a [primary|secondary] calibrator Pako> '''catalog source ihet''' [[BR]] Pako> '''source Calibrator_Name ''' [[BR]] Pako> '''p60''' [[BR]] Pako> '''set pointing azcor elcor''' [[BR]] Pako> '''onf4''' ! Short Onoff integration (4 Subscans of 10 s) with central pixel 53 <!> 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> '''bsw throw''' !''Setup the wobbler throw'' [[BR]] 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> '''bmapskew laz lel elstep azv skew''' !''Setup an OTF map of laz azimuth length, lel elevation length, elstep elevation step, azv azimuth speed (arcsec/s) and a skew (step) in azimuth (arcsec).'' [[BR]] Pako> start !''Start the map after you checked it is correct (it gives you the total integration time).'' ''Maps with the wobbler rotated'' [between -50 and 50 degrees]:[[BR]] Pako> '''set 2nd wobblerRotation''' !''Setup the wobbler rotation with the angle wobblerRotation [degree]'' [[BR]] Pako> ... Do a pointing before with the wobbler rotated [[BR]] Pako> '''bmap-rotated laz lel elstep azv wobblerRotation''' !'' Setup an OTF map of laz azimuth length, lel elevation length, elstep elevation step, azv azimuth speed (arcsec/s) and the wobblerRotation angle [degree]'' [[BR]] Pako> start [[BR]] Pako> ... Do a pointing after the map Pako> '''set 2nd 0.''' !''Setup the wobbler rotation back to zero.'' <!> 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]] [:CookbookPako#top:Top] == Typical Bolo Session == 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> bf ! focus Pako> set focus -3.5 Pako> onf4 ! Measure the flux of Mars Pako> gain 10. Pako> @wbolo 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 ... }}} [:CookbookPako#top:Top] == List of Commands == These commands are specific of the Pool observations with the bolometer. || Command || Description || || '''@wbolo''' || Setup the default configuration and the commands. || || '''bf''' || Perform a focus. || || '''bmap''' ''Az'' ''El'' ''Elstep'' ''Azvel'' || Perform an OTF map with an extent ''Az'' x ''El'' (arcsec), an elevation step ''Elstep'' (arcsec) and a scan velocity ''Azvel'' (arcsec/s) || || '''bsw''' ''Throw'' || Setup the wobbler ''Throw'' (arcsec). || || '''bt''' || Perform a bolotip at the current azimuth. || || '''btaz''' ''Az'' || Perform a bolotip at the azimuth ''Az''. || || '''gain'''''Val'' || Setup the bolometer gain at ''Val'': use ''gain 10'' for all but ''2'' for Mars, Mercury (Venus, Saturn, Jupiter). || || '''onf4''' || Quick 1 minute onoff on a strong source (calibrator). || || '''onf''' ''Nsub'' ''Throw'' || Perform an onoff of ''Nsub'' subscans of 1 minute with a wobbler ''Throw'' (arcsec). || || '''p40''' || Perform a pointing (40 arcsec) on a week source. <!> NCS problem still. || || '''p60''' || Perform a pointing (60 arcsec) on a strong source. <!> To be preferred currently || || '''roff20''' || Set the reference channel 20, the most sensitive on ''MAMBO2'' (onoff).|| || '''roff53''' || Set the reference channel 53, the central one on ''MAMBO2'' (mapping).|| = 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 the same that with bolometer observations. If the macros written by the PIs are not working ask the Pool coordinator or the AoD. {{{ Pako> @setup-186_05-1850 ! Setup the frequencies/receivers. Tuning... Pako> source Mars Pako> pointing ! Check if continuum backends are set Pako> start Pako> set pointing -1. 2. ! The correction are given using the mira program Pako> focus 2.0 Pako> start Pako> set focus -2.2 ! The correction is given using the mira program Pako> cata source ihet Pako> source J2240+245 ! Pointing source Pako> pointing Pako> start Pako> set point -1. 0.5 Pako> catalog source pool Pako> source N821 Pako> @backends-186_05 ! maybe included in the following macro Pako> @target-wsw-186_05 Number of Loops= 5 ! according the indications of the PI. Pako> @setup-186_05-1850 ! Setup the continuum backend. Pako> source J2240+245 Pako> pointing Pako> start Pako> set point -1. 0.5 Pako> catalog source pool Pako> source N822 Pako> @backends-186_05 Pako> @target-wsw-186_05 Number of Loops= 5 Pako> Ad Nauseam ... }}} [:CookbookPako#top:Top] |
Anchor(top) TableOfContents(3)
Back to Pool page: PoolObserving
Important: these notes are specific for observation in the Pool -- they are not the general Pako Cookbook!
Bolometer Observation
Currently we are using the 117 channels MAMBO2 bolometer built at the MPfR in Bonn (Germany) by the group of Ernst Kreysa. 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), setup the bolometer commands
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
Skydip, pointing, focus
Pako> bt !Skydip at the current azimuth+start
Every 2 hours in stable atmospheric condition.
NOTE: For NCS testing use p90 or p120 for pointingBR 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)
Pako> bf Perform 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
Before an Onoff, be sure you are pointing with the right pixel (20).BR Do a pointing before each Onoff or map if they are longer than 30 mn.
Calibration
Calibration on a [primary|secondary] calibrator
Pako> catalog source ihet BR Pako> source Calibrator_Name BR Pako> p60 BR Pako> set pointing azcor elcor BR Pako> onf4 ! Short Onoff integration (4 Subscans of 10 s) with central pixel 53
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> bsw throw !Setup the wobbler throw BR 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> bmapskew laz lel elstep azv skew !Setup an OTF map of laz azimuth length, lel elevation length, elstep elevation step, azv azimuth speed (arcsec/s) and a skew (step) in azimuth (arcsec). BR Pako> start !Start the map after you checked it is correct (it gives you the total integration time).
Maps with the wobbler rotated [between -50 and 50 degrees]:BR
Pako> set 2nd wobblerRotation !Setup the wobbler rotation with the angle wobblerRotation [degree] BR Pako> ... Do a pointing before with the wobbler rotated BR Pako> bmap-rotated laz lel elstep azv wobblerRotation ! Setup an OTF map of laz azimuth length, lel elevation length, elstep elevation step, azv azimuth speed (arcsec/s) and the wobblerRotation angle [degree] BR Pako> start BR Pako> ... Do a pointing after the map Pako> set 2nd 0. !Setup the wobbler rotation back to zero.
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
Typical Bolo Session
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> bf ! focus
Pako> set focus -3.5
Pako> onf4 ! Measure the flux of Mars
Pako> gain 10.
Pako> @wbolo
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 ...
List of Commands
These commands are specific of the Pool observations with the bolometer.
Command |
Description |
@wbolo |
Setup the default configuration and the commands. |
bf |
Perform a focus. |
bmap Az El Elstep Azvel |
Perform an OTF map with an extent Az x El (arcsec), an elevation step Elstep (arcsec) and a scan velocity Azvel (arcsec/s) |
bsw Throw |
Setup the wobbler Throw (arcsec). |
bt |
Perform a bolotip at the current azimuth. |
btaz Az |
Perform a bolotip at the azimuth Az. |
gainVal |
Setup the bolometer gain at Val: use gain 10 for all but 2 for Mars, Mercury (Venus, Saturn, Jupiter). |
onf4 |
Quick 1 minute onoff on a strong source (calibrator). |
onf Nsub Throw |
Perform an onoff of Nsub subscans of 1 minute with a wobbler Throw (arcsec). |
p40 |
Perform a pointing (40 arcsec) on a week source. |
p60 |
Perform a pointing (60 arcsec) on a strong source. |
roff20 |
Set the reference channel 20, the most sensitive on MAMBO2 (onoff). |
roff53 |
Set the reference channel 53, the central one on MAMBO2 (mapping). |
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 the same that with bolometer observations. If the macros written by the PIs are not working ask the Pool coordinator or the AoD.
Pako> @setup-186_05-1850 ! Setup the frequencies/receivers. Tuning... Pako> source Mars Pako> pointing ! Check if continuum backends are set Pako> start Pako> set pointing -1. 2. ! The correction are given using the mira program Pako> focus 2.0 Pako> start Pako> set focus -2.2 ! The correction is given using the mira program Pako> cata source ihet Pako> source J2240+245 ! Pointing source Pako> pointing Pako> start Pako> set point -1. 0.5 Pako> catalog source pool Pako> source N821 Pako> @backends-186_05 ! maybe included in the following macro Pako> @target-wsw-186_05 Number of Loops= 5 ! according the indications of the PI. Pako> @setup-186_05-1850 ! Setup the continuum backend. Pako> source J2240+245 Pako> pointing Pako> start Pako> set point -1. 0.5 Pako> catalog source pool Pako> source N822 Pako> @backends-186_05 Pako> @target-wsw-186_05 Number of Loops= 5 Pako> Ad Nauseam ...