Observation Summary
| OBSID: | 1342217853 |
| Instrument: | PACS |
| AOR label: | Bright 1 - OFFPOS 12 - HOPS 343 - 329 |
| Proposal: | KPOT_tmegeath_2 |
| Target: | OFFPOS 12 |
| Actual RA: | 5h 44m 17.93s |
| Actual Dec.: | 0° 49' 50.01'' |
| Purpose: | Undefined |
| Concat.: | 1342217851,1342217852,1342217853,1342217854,1342217855,1342217856 |
| OD: | 690 |
| Start: | 2011-04-04T17:38:06.000000 TAI (1680629886000000) |
| Duration: | 3079.0 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 1 | blue | 2 | B2A,B3A | 57.000 | 71.000 | 50.510 | 71.207 | 4 | 2 | 0.14 | Yes, partly | prime |
- | red | 102 | R1 | - | - | 170.377 | 213.156 | 4 | 2 | 0.14 | No | parallel |
Range 2 | red | 103 | R1 | 102.000 | 142.000 | 101.193 | 142.405 | 4 | 2 | 0.14 | No | prime |
- | blue | 3 | B2A | - | - | 50.510 | 71.207 | 4 | 2 | 0.14 | Yes, partly | parallel |
(*) = requested in HSPOT
System configuration summary
| SPG pipeline version: | SPG v14.2.2 |
| SPG pipeline products creation date: | 2017-01-17T12:47:59.565000 TAI (1863348479565000) |
| Mission configuration: | MC_H72ASTR_P60ASTR_S61ASTR_AO |
| Processed to level: | RED: 2.0 BLUE: 2.0 |
| Quality Control: | PASSED |
| Action: | NONE |
Quality comments
Due to an instrument anomaly the grating movement was inhibited during the first repetition of a range.
The data have been pipeline processed correctly, but the SNR will be lower than expected due to the fewer repeats on the spectral range than requested.
Off source observation in unchopped range-scan pairs; matched with the on-source observations 1342217851, 1342217855
The offset between the central spaxel and the requested sky coordinates is 2.69" 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.