Observation Summary

OBSID:1342263938
Instrument:PACS
AOR label:1E0102 - OIII88
Proposal:OT2_mmeixner_4
Target:1E0102
Actual RA:1h 4m 2.25s
Actual Dec.:-72° 1' 49.22''
Purpose:offSelector
Concat.:1342263938,1342263939,1342263940,1342263941,1342263942,1342263943,1342263944
OD:1377
Start:2013-02-19T18:52:17.000000 TAI (1739991137000000)
Duration:266.0 seconds (incl. spacecraft on-target slew time)

AOT and instrument configuration:

AOT:PacsRangeSpec
Mode:Pointed, unchopped grating scan
Bands:B2B R1 (prime diffraction orders selected)
Sampling:High (default spectral mapping)
Nod cycles:1

Observation block summary

Name(*)CameraIDBand(*)ReqWaveMin(*)ReqWaveMax(*)WaveMinWaveMaxRepetitions(*)ActualRepCapacitanceOutOfBandChannel
micrometermicrometermicrometermicrometerpF
Range 1blue2B2B87.88088.98087.70289.204120.14Noprime
-red102R1--175.376178.383120.14Noparallel
(*) = requested in HSPOT

System configuration summary

SPG pipeline version:SPG v14.2.0
SPG pipeline products creation date:2017-01-14T11:03:31.309000 TAI (1863083011309000)
Mission configuration:MC_H102ASTR_P70ASTR_S66ASTR_RP
Processed to level:RED: 2.5 BLUE: 2.5
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 -4.2" in Right Ascension and 1.2" in Declination.
On source observation in an unchopped range-scan pair; matched with the off-source observation 1342263939
The offset between the central spaxel and the requested sky coordinates is  1.67" 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.