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Those observations looked for 43 GHz SiO maser emission in
VXSgr. 2 transitions are observed, and full polarisation.
Observing strategy:
- Go to the flux calibrator 3C286 and do an X-band pointing scan
- Observe 3C286 at Q-band in the desired spectral line mode, using frequency 1
- Observe 3C286 at Q-band in the desired spectral line mode, using frequency 2
- Observe the polarisation calibrator 1751+096 at frequency 1
- Observe the polarisation calibrator 1751+096 at frequency 2
- Go to the bandpass calibrator and do an X-band pointing scan
- Observe the bandpass calibrator 1733-130 at frequency 1
- Observe the bandpass calibrator 1733-130 at frequency 2
- Observe VXSgr according to:
- 5 minutes frequency 1
- 5 minutes frequency 2
- 5 minutes frequency 1
- 5 minutes frequency 2
- 5 minutes frequency 1
- 5 minutes frequency 2
- 3.5 min polarisation calibrator frequency 1
- 3.5 min polarisation calibrator frequency 2
- Repeat those steps 4 times. In this way we get a better uv
coverage and a few passes on the polarisation calibrator.
- Observe secondary flux calibrator at frequency 1
- Observe secondary flux calibrator at frequency 2
This is the resulting observe file. Parts of the file are
marked in color, with explanations below. These are things you need
to look for in your observe file, to make sure the schedule is
correct.
/.AH771 2359
//* ***
//* *** NRAO VLA Observe Program, Version U4.0.6, 2000.07.11
//* ***
//* *** Observation day 59,025 at 15 30 00 LST, 2002.02.05 06:38:20 MST.
//* ***
//* *** Observer
//* *** Ylva Pihlstrom Phone
//* *** NRAO-Socorro Office: 835-7387
//* *** During observation: 838-2996
//* ***
//* ***
//* ***
//* *** E-Mail address
//* *** ypihlstr@nrao.edu
//* ***
//* *** Observing mode(s): line
//* ***
//* *** Special Instructions
//* *** Spectral line Q band observing, pointing at X band in scans one and
//* *** six - extend on those (1st and 6th) if necessary for pointing to work
//* ***
//* ***
//* ***
//* *** Date Prepared: 2002.02.04 15:12:30 MST.
//* ***
1331+305 15 35 45 13 31 08.2880 +30 30 32.959C XX IRA 0000
//AN A
//DS 10
//LO 13.4 13.4 3940 3890
//FISF 100.000000 200.000000
1331+305 15 41 09 13 31 08.2880 +30 30 32.959C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
1331+305 15 44 30 13 31 08.2880 +30 30 32.959C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
1751+096 15 50 39 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
1751+096 15 53 01 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
1733-130 15 56 45 17 33 02.7058 -13 04 49.548C XX IRB 0000
//AN A
//DS 10
//LO 13.4 13.4 3940 3890
//FISF 100.000000 200.000000
1733-130 16 01 12 17 33 02.7058 -13 04 49.548C QQ B 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
1733-130 16 04 33 17 33 02.7058 -13 04 49.548C QQ B 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 16 10 33 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 16 15 59 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 16 21 23 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 <42820.587000
VXSGR 16 26 48 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 16 32 13 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 16 37 38 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
1751+096 16 41 35 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
1751+096 16 43 58 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 16 50 54 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 16 56 17 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 17 01 42 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 17 07 07 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 17 12 32 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 17 17 57 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
1751+096 17 21 57 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
1751+096 17 24 22 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 17 31 23 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 17 36 48 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 17 42 13 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 17 47 38 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 17 53 02 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 17 58 27 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
1751+096 18 02 28 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
1751+096 18 04 53 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 18 11 52 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 18 17 12 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 18 22 37 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 18 28 02 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
VXSGR 18 34 57 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
VXSGR 18 41 52 18 08 04.0485 -22 13 26.614C QQ 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
1751+096 18 45 47 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
1751+096 18 48 12 17 51 32.8186 +09 39 00.729C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
2253+161 18 55 36 22 53 57.7479 +16 08 53.561C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3610 3610 0000
//FISVTL 000010.000 000010.000 42820.587000 42820.587000
2253+161 19 00 00 22 53 57.7479 +16 08 53.561C QQ A 3333T
//AN A
//DS PA 6 0 000 0 000 0 000 0 000
//LO 51.6 13.4 3910 3910 0000
//FISVTL 000010.000 000010.000 43122.080000 43122.080000
| XX |
XX defines the observing frequency. Since this is a pointing scan, it should be in X-band. |
| IR |
This defines a referenced pointing scan (set by specifying "Det. ref. point." in the OBSERVE Source Page). |
| 10 |
The integration time in seconds. Make sure this is 10 for your pointing scan. |
| 3333 |
Defines the bandwidth code for the 4 IFs, here 6.25 MHz |
| T |
This T shows that you are applying the pointing corrections to the observing scan (set by specifying "Referenced Pointing" in the OBSERVE Source Page). |
| PA |
Defines the correlator mode; PA means polarisation mode AC IFs. |
| 6 |
The integration time in seconds. Make sure this is what you need for your observations. Please check the minimum integration time allowed. |
| 3610 |
The 2-4 GHz synthesizer (L6) frequency in MHz (here for the first transition). At frequencies higher than L-band there is a bandpass filter, which precludes the use of synthesizer values outside the range of 3410 to 4060 MHz. Check that your values are within this range. Avoid values between 3750 and 3800 which is close to a VLA birdie. |
| 3910 |
The 2-4 GHz synthesizer (L6) frequency in MHz (here for the second transition). |
| VTL |
Important for spectral line: the //FI card defines the Fluke synthesizer frequencies. V stands for velocities according to the radio convention, T for center frequency reference and L for an LSR rest frame. If you are observing extragalactic targets you probably want to have "ZTB" instead of "VTL", where Z stands for optical velocity convention (and that you define a rest frequency in addition to velocity of the source), T as above and B for a barycentric rest frame. |
| 000010.000 |
Fluke A and B velocities in km/s - the velocity of your target. |
42820.587000
43122.080000 |
Fluke A and B line rest frequencies in MHz - the rest frequencies of your lines. Here two transitions of SiO are observed (first frequency at v=1-0 and second at v=2-1). |
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