Observation Summary
| OBSID: | 1342227629 |
| Instrument: | PACS |
| AOR label: | Calibration_RPSpecFlux_1-RPSpecFlux_433B_StdRS_UnchopFluxB2A_HD161796Off_03 |
| Proposal: | Calibration_rppacs_96 |
| Target: | HD161796 Off |
| Actual RA: | 17h 44m 55.6s |
| Actual Dec.: | 50° 5' 38.19'' |
| Purpose: | offSelector |
| Concat.: | --- |
| OD: | 839 |
| Start: | 2011-08-31T05:56:26.000000 TAI (1693461386000000) |
| Duration: | 190.0 seconds (incl. spacecraft on-target slew time) |
AOT and instrument configuration:
| AOT: | PacsRangeSpec |
| Mode: | Pointed, unchopped grating scan |
| Bands: | B2A R1 (prime diffraction orders selected) |
| Sampling: | High (default spectral mapping) |
| Nod cycles: | 1 |
Observation block summary
| Name(*) | Camera | ID | Band(*) | ReqWaveMin(*) | ReqWaveMax(*) | WaveMin | WaveMax | Repetitions(*) | ActualRep | Capacitance | OutOfBand | Channel |
| | | | micrometer | micrometer | micrometer | micrometer | | | pF | | |
Key B2A | blue | 2 | B2A | 59.750 | 60.250 | 59.554 | 60.588 | 2 | 4 | 0.14 | No | prime |
- | red | 102 | R1 | - | - | 119.077 | 121.164 | 2 | 4 | 0.14 | No | parallel |
(*) = requested in HSPOT
System configuration summary
| SPG pipeline version: | SPG v14.2.0 |
| SPG pipeline products creation date: | 2016-07-25T23:01:27.341000 TAI (1848178887341000) |
| Mission configuration: | MC_H88ASTR_P67ASTR_S63ASTR_RP |
| Processed to level: | RED: 2.0 BLUE: 2.0 |
| Quality Control: | PASSED |
| Action: | NONE |
Quality comments
Off source observation in an unchopped range-scan pair; matched with the on-source observation 1342227628
The offset between the central spaxel and the requested sky coordinates is 1.60" 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.