Observation Summary
| OBSID: | 1342250912 |
| Instrument: | PACS |
| AOR label: | NGC_2022_B2A_off2 |
| Proposal: | OT1_rrubin_1 |
| Target: | NGC 2022 Off |
| Actual RA: | 5h 42m 6.09s |
| Actual Dec.: | 9° 7' 10.79'' |
| Purpose: | offSelector |
| Concat.: | 1342250911,1342250912 |
| OD: | 1217 |
| Start: | 2012-09-12T03:28:09.000000 TAI (1726111689000000) |
| Duration: | 1001.0 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: | 3 |
System configuration summary
| SPG pipeline version: | SPG v14.2.0 |
| SPG pipeline products creation date: | 2016-07-27T21:35:33.481000 TAI (1848346533481000) |
| Mission configuration: | MC_H102ASTR_P70ASTR_S66ASTR_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 1342250911
The offset between the central spaxel and the requested sky coordinates is 1.62" 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.