Observation Summary

OBSID:1342262998
Instrument:PACS
AOR label:PSpecR-posC-redSED
Proposal:OT1_tonaka_2
Target:Carina_posC
Actual RA:10h 43m 28.93s
Actual Dec.:-59° 34' 28.54''
Purpose:offSelector
Concat.:1342262996,1342262997,1342262998,1342262999
OD:1363
Start:2013-02-05T17:41:44.000000 TAI (1738777304000000)
Duration:669.0 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:Nyquist (with spectral dithering if range repetition > 1)
Nod cycles:1

Observation block summary

Name(*)CameraIDBand(*)ReqWaveMin(*)ReqWaveMax(*)WaveMinWaveMaxRepetitions(*)ActualRepCapacitanceOutOfBandChannel
micrometermicrometermicrometermicrometerpF
SED B2Bred102R1140.000220.000139.577210.273120.45Noprime
-blue2B2B--69.806105.182120.14Yes, partlyparallel
(*) = requested in HSPOT

System configuration summary

SPG pipeline version:SPG v14.2.0
SPG pipeline products creation date:2017-01-14T11:03:03.045000 TAI (1863082983045000)
Mission configuration:MC_H100ASTR_P70ASTR_S66ASTR_RP
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 1342262999
The offset between the central spaxel and the requested sky coordinates is  1.53" 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.