Observation Summary
| OBSID: | 1342243540 |
| Instrument: | PACS |
| AOR label: | Calibration_RPSpecFlux_1-RPSpecFlux_433B_nStdRange_UnchopFluxB2A_HD161796_04 |
| Proposal: | Calibration_rppacs_131 |
| Target: | HD161796 |
| Actual RA: | 17h 44m 55.3s |
| Actual Dec.: | 50° 2' 39.33'' |
| Purpose: | offSelector |
| Concat.: | [1342243540, 1342243541] |
| OD: | 1046 |
| Start: | 2012-03-25T17:07:12.000000 TAI (1711386432000000) |
| 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 |
System configuration summary
| SPG pipeline version: | SPG v14.2.0 |
| SPG pipeline products creation date: | 2017-01-14T10:34:21.432000 TAI (1863081261432000) |
| Mission configuration: | MC_H98ASTR_P69ASTR_S66ASTR_RP |
| 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 1342243541
The offset between the central spaxel and the requested sky coordinates is 1.64" 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.