Observation Summary

OBSID:1342232575
Instrument:PACS
AOR label:PACS-S106-BLUE
Proposal:OT1_epeeters_1
Target:S106
Actual RA:20h 27m 26.83s
Actual Dec.:37° 22' 48.45''
Purpose:offSelector
Concat.:1342232575,1342232576,1342232577,1342232578
OD:921
Start:2011-11-20T15:15:33.000000 TAI (1700493333000000)
Duration:670.0 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

Observation block summary

Name(*)CameraIDBand(*)ReqWaveMin(*)ReqWaveMax(*)WaveMinWaveMaxRepetitions(*)ActualRepCapacitanceOutOfBandChannel
micrometermicrometermicrometermicrometerpF
SED-BLUEred102R1102.000146.000101.456146.659220.45Noprime
-blue2B2A--50.64773.332220.14Yes, partlyparallel
(*) = requested in HSPOT

System configuration summary

SPG pipeline version:SPG v14.2.0
SPG pipeline products creation date:2017-01-14T10:22:55.345000 TAI (1863080575345000)
Mission configuration:MC_H90ASTR_P67ASTR_S63ASTR_HPSDB_MOC13
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 1342232576
The offset between the central spaxel and the requested sky coordinates is  1.84" 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.