Observation Summary
| OBSID: | 1342217802 |
| Instrument: | PACS |
| AOR label: | PRISMAS_sgrast_pacs_red |
| Proposal: | KPGT_mgerin_1 |
| Target: | SgrA* |
| Actual RA: | 17h 45m 39.9s |
| Actual Dec.: | -29° 0' 27.41'' |
| Purpose: | Undefined |
| Concat.: | 1342217802,1342217803,1342217804,1342217805 |
| OD: | 686 |
| Start: | 2011-03-31T18:45:32.000000 TAI (1680288332000000) |
| Duration: | 2800.0 seconds (incl. spacecraft on-target slew time) |
AOT and instrument configuration:
| AOT: | PacsRangeSpec |
| Mode: | Pointed, unchopped grating scan |
| Bands: | B3A R1 (prime diffraction orders selected) |
| Sampling: | Nyquist (with spectral dithering if range repetition > 1) |
| Nod cycles: | 1 |
Observation block summary
| Name(*) | Camera | ID | Band(*) | ReqWaveMin(*) | ReqWaveMax(*) | WaveMin | WaveMax | Repetitions(*) | ActualRep | Capacitance | OutOfBand | Channel |
| | | | micrometer | micrometer | micrometer | micrometer | | | pF | | |
Range 1 | red | 102 | R1 | 102.000 | 193.000 | 101.222 | 193.287 | 4 | 2 | 0.45 | No | prime |
- | blue | 2, 3 | B2A,B3A | - | - | 50.204 | 75.773 | 4 | 1 | 0.24 | Yes, partly | parallel |
(*) = requested in HSPOT
System configuration summary
| SPG pipeline version: | SPG v14.2.0 |
| SPG pipeline products creation date: | 2017-01-14T09:54:22.711000 TAI (1863078862711000) |
| Mission configuration: | MC_H72ASTR_P60ASTR_S61ASTR_AO |
| Processed to level: | RED: 2.5 BLUE: 2.5 |
| Quality Control: | PASSED |
| Action: | NONE |
Quality comments
On source observation in an unchopped range-scan pair; matched with the off-source observation 1342217803
The offset between the central spaxel and the requested sky coordinates is 1.91" in the dispersion direction.
If the target is point-like and is offset from the centre of a spaxel in the dispersion direction, the spectral line
profiles will develop a skew. This skewed Gaussian profile becomes more extreme as the offset increases.
Be aware that this can be confused with real velocity structure.
This will affect spectra from a single spaxel of a rebinned cube (products with filenames "..hps3dr[r|b].."),
and combined spaxel-spectra, i.e. added rebinned cube spaxels, or single spaxels from an interpolated or projected cube
(products with filenames "..hps3di[r|b].." or "..hps3dp[r|b].."). See the "PACS Handbook" for more information.