This page is to document requests for and status of test observations requested to verify survey strategies.
| Early observations < 28 antennas | Observations with full array | ||||||||||||
| Team | Target | Frequency | Footprint | Pitch | Interleaving | Duration | Status | Observation Notes | Processing Notes | SBID | Cal | SBID | Cal |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WALLABY | Eridanus (AS035 Targets) | 1296 MHz | square_6x6 | 0.9 | Yes - one night per interleave | 22+ hrs (~12 hrs per footprint) | Pending (6 hrs per footprint observed) |
| Karen - images cubes of a few beams in the upper half of the band (i.e. 1296-1440MHz) are looking good, just a few minor bugs/concerns that are being addressed → starting to testing v0.24.2-rc on 3 Jul 2019 - with ~11 hours of data (combining footprint A and B), we are achieving RMS = 2 mJy/beam per 4km/s channel - continuum artifacts are still present in the outer regions of the image cube. There also appears to be some over-subtraction around bright sources but this issue could be due to the limited (i.e. only 12MHz) range of the spectral data being processed See JIRA ticket for more details: ACES-517 | 7809 (A) 7816 (B) 7818 (B) | 7810 (A) 7822 (B) | 8168 8170 | 8169 |
| POSSUM | SN 1006 | 864 MHz | closepack36 | 0.6 (wr edited this) | No | ~4 hrs | Pending Observed with square_6x6 to fill scheduling gap | Using X-Y phase calibrated beam weights, 1 MHz averaging, first try with pitch 0.9 | Name(s) ~wasim beginning processing for 8280/8281~ | 7216 | 7215 | 8280 | 8281 |
| POSSUM | 3C138 | 864 MHz | boresight | 0.0 | No | 4 hrs | Pending | Using X-Y phase calibrated beam weights Try to align with ATCA green time? | Name(s) ~enter notes here~ | 7218 | 7217 | ||
| POSSUM | RACS-style test obs at Decl. ~21h | 864 MHz | as per RACS | 0.9 | No | as per RACS | Observed | Setup as for previous RACS test observations, but centred on RA = 21 hours, and Decl. <=-30 degrees. These observations will provide a bevy of polarised sources that will be followed up with the ATCA QUOCKA survey in the coming semester, to provide a gold-standard point of comparison for verifying and quantifying array polarisation performance. Observations without all antennas active will suffice. | Name(s) ~enter notes here~ | 8142 | 8141 | ||
| POSSUM | Fornax | 864 + 1296 MHz | square_6x6 | 0.9 | Yes - AB interleaving for both freq bands | 6--8 hours per interleave and band | Observed | Field centred on 03:31:30, -35:27:30, to be taken in both low and mid freq bands (864 + 1296 MHz). Aims are to verify that the detailed freq-dependent polarisation behaviour of field sources matches that from existing broadband ATCA observations (and quantify deviations), and to assess the continuity of calibrated full Stokes polarisation spectra for field sources across bands. | Emil, Craig, Aidan ~enter notes here~ | 7868 | 7867 | 8279 (864 MHZ) 8286 (1272 MHZ) | 8281 8283 |
| POSSUM | Galactic mid-plane | low + mid + high (~850, ~1200, ~1500 MHz) bands | closepack36 | 0.9 | No | 6--8 hours per band | Pending | Field centred on 15:54:21, -53:43:20, to be taken in the low, mid, and high freq bands (~850, ~1200, ~1500 MHz), with on-line 1 MHz spectral averaging. Commissioning goals are to verify processing and reconstruction of diffuse full-Stokes emission for a complex Galactic field. | Name(s) ~enter notes here~ | ||||
| POSSUM | 3C138 raster | 864 + 1296 MHz | square_6x6 | 0.9 | No | TBA | Pending | 'Raster' scans of of 3C138, in which this standard polarisation calibrator will be systematically offset from the array pointing centre to form a dense grid probing the off-axis polarisation leakage and polarised beam response in one quadrant (the upper-left, say) of the square 6x6 beam footprint. Further details TBA shortly. | Name(s) ~enter notes here~ | ||||
| POSSUM | Joint ASKAP + MWA long track on PKS J0636-2036 | 864 MHz | single beam | n/a | No | Full rise-to-set track if possible | Pending | Single beam, long track on (located at 06:36:30, -20:36:00 J2000). Need to coordinate simultaneous observations of target with MWA. Aim is to detect and quantify ionospheric Faraday rotation with ASKAP, verify with high precision RMs derived from coeval MWA observations, and verify ability to predict the magnitude of IFR by software packages that will eventually be incorporated into the ASKAP data reduction pipeline. | Name(s) ~enter notes here~ | ||||
| EMU | SCORPIO | 920 MHz | closepack36 | 0.9 | Yes | 11 hrs per interleave | Observed w/o interleaving and with square_6x6 | Priority 2: Field center: 16:59:00 -41:34:00 | 8838 | 8839 | |||
| EMU | SCORPIO | 1296 MHz | closepack36 | 0.9 | Yes | 11 hrs per interleave | Observed w/o interleaving and with square_6x6 | Priority 2: Field center: 16:59:00 -41:34:00 Please avoid the sun! | Keel, Riley (S&A, Kensington WA)Lower band half unusable due to RFI. Mostly default parameters show nice data. (Using first set currently; 8165 & 8166) Modifying parameters requested by EMU team. | 8165 8489 8845 | 8166 8492 8846 | ||
| EMU | SCORPIO | 1630 MHz | closepack36 | 0.9 | Yes | 11 hrs per interleave | Observed with square_6x6 and no interleaving | Priority 2: Field center: 16:59:00 -41:34:00 | Andrew started processing | 6742, 6744 | 6743 | 8850 | 8851 |
| EMU | GAL-1 | 870-1158 MHz | square_6x6 | 0.9 | Yes | ~11 hours | Pending | Priority 3: Field center: 15:54:21 -53.43.19 | Name(s) ~enter notes here~ | 7746 (short) | 7745 | ||
| EMU | A3391 | 870-1158 MHz | closepack_36 | 0.9 | Yes | 11 hrs | Complete | Priority 1: Field center: 06:26:49.44 -54.04.19.2 No interleaving is requested. This is a test of the suitability of closepack_36 with this pitch and frequency range for the pilot survey. Please use a center frequency near 995 MHz and note which analog filter was used. | Susie Some beams heavily affected by artefacts that resemble w-term errors. Flagging ak03 (poor SEFD response) has fixed this. 1% errors affecting bright RGs. Trying out amp selfcal on last loop. Andrew/ Aidan Reprocessed using the latest pipeline with spectral index fixes and preflagging (0.24.4), using the EMU pilot parset. Results look much better. Released to CASDA. | 8275 | 8273 | ||
| EMU | G23-0 | 864 MHz | square_6x6 | 0.9 | Yes | 11 hrs | Complete | Done for ACES system verification Released on CASDA | Known issues include incorrect spectral indices in catalogues. See CASDA quality control notes. 9154 available to test updated TT1 primary beam correction | (8132) 9154 | (8131) 9153 | ||
| EMU | G23-1 | 864 MHz | square_6x6 | 0.9 | Yes | 11 hrs | Complete | Done for ACES system verification Released on CASDA | Known issues include incorrect spectral indices in catalogues. See CASDA quality control notes. | 8137 | 8136 | ||
| EMU | ACO3266 | 870-1158 MHz | square_6x6 | 0.9 | Yes | 11 hr | Pending | Priority 4: Using X-Y phase calibrated beam weights | Susie Some swirly artefact errors likely due to poor calibration observation. Reobserving. | 7753 | 7745 | ||
| EMU + POSSUM | ACO529 | 870-1158 MHz | square_6x6 | 0.9 | Yes | 8-12 hrs | Observed | Priority 4: Require X-Y phase calibrated beam weights Field centered on 05:00:40, +06:10:24, with AB interleaving | Susie, Torrance Significant streaky artefacts throughout central four beams. Torrance is having some success with direction-dependent calibration but has not fully removed them. 8 hour track available 01/07. | (8138) (8143) 9152 | (8136) (8145) 9153 | ||
| EMU | G12-0 | 870-1158 MHz | square_6x6 | 0.9 | Yes | ~6 hours per interleave | Observed | Priority 1: The 1st tile of a two-tile survey generated with survey-plan.py -n ak:square_6x6 -p 0.9 -c '12:00:00 00:00:00' -o '2,1' -l G12 | Uploaded to CASDA | 7723 | 7724 | 8117 (744-1032 MHz) 8703 | 8118 (744-1032 MHz) 8704 |
| EMU | G12-1 | 870-1158 MHz | square_6x6 | 0.9 | Yes | ~6 hours per interleave | Observed | Priority 1: The 2nd tile of a two-tile survey generated with survey-plan.py -n ak:square_6x6 -p 0.9 -c '12:00:00 00:00:00' -o '2,1' -l G12 | Uploaded to CASDA | 7754 | 7745 | 8130 (744-1032 MHz) | 8131 (744-1032 MHz) |
| EMU | SHAP-1 | 870-1158 MHz | square_6x6 | 0.9 | Yes | ~11 hours | Observed | Priority 3: Field center: 13:27:57 -31.30.09 | Susie Mostly positive; extra clean scales required for GRG in southeast corner. Slight 1% errors present. | 8140 | 8141 | ||
| EMU | M-DEEP2 | 1296- 1588 MHz | square_6x6 | 0.9 | Yes | ~12 hours | Field Centre: 04:13:26.4 -80.00.00 just looking to process center beam | ||||||
| DINGO | GAMA23 | 1290-1434 MHz (144 MHz total) | square_6x6 | 0.9 | Yes (15 min per) | 12 hr | Observed (continuum mode only) | Priority 1: to test day time transition into night time - timeline: asap - create schedule with: | Name(s) Observed in 1 MHz resolution mode Full spectral line mode observation required | 8284 (T0_A) 8289 (T1_A) | 8283 (T0_A) 8288 (T1_A) | ||
| DINGO | GAMA15 | 1290-1434 MHz (144 MHz total) | square_6x6 | 0.9 | Yes (15 min per) | 6 hr | Pending | Priority 2: test equatorial performance during the day - timeline: before end of January - create beam footprint with: | Name(s) ~enter notes here~ | ||||
| DINGO | GAMA09 | 1290-1434 MHz (144 MHz total) | square_6x6 | 0.9 | Yes (15 min per) | 6 hr | Pending | Priority 3: test equatorial performance during the night - timeline: flexible - create beam footprint with: | Hotan, Aidan (S&A, Kensington WA) Observed in 1 MHz resolution mode without interleaving using closepack36 at 864 MHz to test basic imaging. Can follow up with mid-band later. | 9155 | 9156 | ||
| DINGO | GAMA12 | 1290-1434 MHz (144 MHz total) | square_6x6 | 0.9 | Yes (15 min per) | 6 hr | Observed | Priority 4: test spectral line imaging in the vicinity of a bright continuum source - timeline: after end of January (especially if observed during the day) - create beam footprints with: | Observed in spectral line mode, Whiting, Matthew (S&A, Marsfield)is processing. | 8171 (T0) 8291 (T1) | 8172 (T0) 8292 (T1) | ||
| DINGO | GAMA23 | 1296 MHz | square_6x6 | 0.9 | No | 5 x 8 hr | Priority 1: test the UV-grid pipeline - timeline: asap (Oct - Dec) - the same configuration for G23 centering on 22:59:00,-32:18:00.00 - use only Tile 1 & footprint A for test observation and record only 4 beams adjacent to directly detected sources (Beam 04, 05, 27, 28) | ||||||
| GASKAP | SMC-1 & 2 | 1296 MHz | closepack36 | 1.0? | Yes | 36 hrs | Observed | Observed in 16x zoom mode | 8906 (T0) 8957 (T1) | 8905, 8907 8956 | |||
| GASKAP | OH Maser Field (Take 2) . G229.5 +0 | 1665MHz | Square 6x6 | 0.8? | No | 11-12hrs | Pending | Red of the OH maser field with less continuum and more antennas. Requesting 32x zoom mode. | Moss, Vanessa (S&A, Marsfield) : this one needs scheduling | ||||
| VAST | Proxima Cen | 864 MHz Continuum | boresight | 0.0 | No | 2 x 6 hrs | Observed | Science: we are leading part of a multi-wavelength campaign to observe the Proxima Cen star-exoplanet system. Any 2 nights of 6 hours between 29th April UT 12:30 - 18:30 until 4th May UT 12:30-18:30 Contact Andrew Zic for scheduling details. 14h29m32.3286s -62d40m31.3065s | All four nights have been processed and dynamic spectra successfully extracted for Proxima Cen. Night 1 shows low level emission for PC, night 2 shows an amazing bright short burst and subsequent flaring, nights 3 and 4 suffered significant RFI but are still partially useable. The results will be sufficient for a paper (Zic et al.) focussed on Proxima Cen. Unrelated to PC, the initial imaging of the field highlighted the presence of a circularly polarised field source (~14 percent). Further investigation revealed that this was a previously unknown pulsar. The results of this serendipitous discovery have been written into a paper (Kaplan et al.) which will be submitted later in June. | 8604 8612 8637 8642 | 8606 8614 8638 8643 | ||
| VAST | PSR J2241-5236 | 864 MHz | boresight | 0.0 | No | 6 hrs | Testing our capability to detect short timescale variability (and frequency variability) with a scintillating pulsar. 1 MHz channels should be OK if space is an issue. | Name(s) ~enter notes here~ | |||||
| VAST | UV Ceti | 864 MHz Continuum | boresight | 0.0 | No | 10+ hrs | Observed | A continuous observation as long as possible to try and catch flares on rotation period of ~5.5 hours. (Last observation was 10 hrs, just began to see start of next flare at the end). | These two observations have been processed and dynamic spectra successfully extracted for UV Ceti. The results have been written into a paper and is currently under review (Zic et al.). | 6757 | 6756 | 8129 | 8128 |
| FLASH | PKS 1229-02 | 1018 MHz (expected line frequency) 18.5 kHz channels 5 MHz beam forming intervals | boresight | 0.0 | No | 8 hrs | Pending | Re-detection of known intervening absorber. ASKAP-12 data revealed possible variability when compared with literature, but could also be due to systematic errors associated 1MHz beam forming intervals. Was observed with ASKAP-36 at much higher S/N, but only with 1 MHz beam forming intervals. Need to re-observe with wider beam forming intervals. | James Allison ~enter notes here~ | 3357, 8807 | 3555, 8806 | ||
| FLASH | GAMAJ224500.05-343031.7 | 1047 MHz (expected line frequency) 18.5 kHz channels 5 MHz beam forming intervals | boresight | 0.0 | No | 5-10 hrs | Observed | Tentative detection with ASKAP-12 of high redshift HI absorption from blind survey of GAMA23. Test new anti-ripple coefficients and guaranteed science (paper almost written). | James Allison Observed with 1MHz beam forming intervals. Larger intervals are not critical for this science case, but might be useful if available. HI absorption line confirmed! Several parts of the band appeared to have corrupted data, which in 4MHz intervals suggests the origin is the correlator. Target flux density ~ consistent with SUMSS: S_ASKAP36 = 630 mJy vs S_SUMSS = 587 mJy In 6 hr observation RMS noise ~ 2.1 mJy per beam per 18.5 kHz, which is consistent with expectations for FLASH | 5229, 5232 | 5228, 5233 | 8808 | 8807 |
| FLASH | PKS 1229-02 | 1018 MHz (expected line frequency) 18.5 kHz channels 5 MHz beam forming intervals | boresight | 0.0 | No | 2+ hrs | Observed | Re-detection of known intervening absorber. ASKAP-12 data revealed possible variability when compared with literature, but could also be due to systematic errors associated 1MHz beam forming intervals. Need to re-observe with wider beam forming intervals. | James Allison Observed with 1MHz beam forming intervals. 5MHz intervals would be very useful for a future observation when available. Several parts of the band appeared to have corrupted data, which in 4MHz intervals suggests the origin is the correlator. Target flux density ~ consistent with previous ASKAP-12 measurement and NVSS: S_ASKAP36 = 1.96 Jy vs S_ASKAP12 = 1.93 Jy & S_NVSS = 1.81 Jy In 8 hr observation RMS noise ~ 1.8 mJy per beam per 18.5 kHz, which is consistent with expectations for FLASH | 3357 | 3355 | 8806 | 8807 |
| FLASH | GAMAJ224500.05-343031.7 | 864 MHz (18.5kHz channels) | boresight | 0.0 | No | 5+ hrs | Observed | Tentative detection with ASKAP-12 of high redshift HI absorption from blind survey of GAMA23. Test new anti-ripple coefficients and guaranteed science (paper almost written). | James Allison Wrong frequency observed to detect tentative HI line, needs to be rescheduled Target flux density correct: S_ASKAP = 600 mJy vs S_SUMSS= 587.3 ± 17.7 mJy | 5229, 5232 | 5228, 5233 | 8485 | 8484 |
| FLASH | PKS 0410-75 | 864 MHz | boresight | 0.0 | No | 4 hrs | Observed | Observed for 2.5 hours, but with improved anti-ripple coefficients | Name(s) ~enter notes here~ | 6857 | 6860 | 8481 | 8482 |
| FLASH | PKS 0410-75 (PKS 1830-211) | 864 MHz | boresight | 0.0 | No | 8 hrs | Observed | Test broader beamforming intervals | Name(s) ~enter notes here~ | 7210 | 7212 | ||
| CRAFT | FRB121102 | 864 MHz | boresight | 0 | No | 5 hrs | Just science - 850 MHz observation of the repeater RA = 05:31:58.70, declination = +33:08:52.500 (J2000) | Name(s) ~enter notes here~ | |||||
