Observation Summary
| OBSID: | 1342197884 |
| Instrument: | PACS |
| AOR label: | Calibration_RPSpecAOTVal_1-RPSpecAOTVal_526B_nSTD_unChop_B2A_CB230_01 |
| Proposal: | Calibration_rppacs_24 |
| Target: | [CB88] 230 |
| Actual RA: | 21h 17m 38.51s |
| Actual Dec.: | 68° 17' 30.75'' |
| Purpose: | Undefined |
| Concat.: | [1342197884, 1342197885] |
| OD: | 389 |
| Start: | 2010-06-06T22:15:26.000000 TAI (1654553726000000) |
| Duration: | 1363.0 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: | Nyquist (with spectral dithering if range repetition > 1) |
| Nod cycles: | 1 |
System configuration summary
| SPG pipeline version: | SPG v14.2.0 |
| SPG pipeline products creation date: | 2017-01-14T09:44:45.970000 TAI (1863078285970000) |
| Mission configuration: | MC_H42_P49_S55_CAL |
| 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 1342197885
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.