Observation Summary
| OBSID: | 1342230943 |
| Instrument: | PACS |
| AOR label: | Polaris-PACSS-off-Range2 |
| Proposal: | OT1_pandre_4 |
| Target: | Polaris-cvi-off-1 |
| Actual RA: | 1h 59m 41.7s |
| Actual Dec.: | 87° 39' 51.08'' |
| Purpose: | offSelector |
| Concat.: | 1342230942,1342230943 |
| OD: | 882 |
| Start: | 2011-10-13T12:43:06.000000 TAI (1697200986000000) |
| Duration: | 534.0 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 2 | blue | 2 | B3A | 61.500 | 64.500 | 61.331 | 64.612 | 5 | 2 | 0.14 | No | prime |
- | red | 102 | R1 | - | - | 183.955 | 193.818 | 5 | 2 | 0.14 | No | parallel |
(*) = requested in HSPOT
System configuration summary
| SPG pipeline version: | SPG v14.2.0 |
| SPG pipeline products creation date: | 2016-07-26T04:51:20.478000 TAI (1848199880478000) |
| Mission configuration: | MC_H88ASTR_P67ASTR_S63ASTR_HPSDB |
| Processed to level: | RED: 2.0 BLUE: 2.0 |
| Quality Control: | PASSED |
| Action: | NONE |
Quality comments
This observation was performed at 'warm' attitude conditions (Star Tracker 2 temperature > -15 C), leading to astrometry shifts induced by thermoelastic drifts which in the case of this observation are estimated to result in an offset of 8.1" in Right Ascension and 1.6" in Declination.
Off source observation in an unchopped range-scan pair; matched with the on-source observation 1342230942
The offset between the central spaxel and the requested sky coordinates is 2.01" 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.