Observation Summary

OBSID:1342225814
Instrument:PACS
AOR label:EtaCar_SED_B3A_off
Proposal:OT1_tgull_3
Target:eta carina off
Actual RA:10h 47m 10.1s
Actual Dec.:-59° 31' 32.5''
Purpose:offSelector
Concat.:1342225814,1342225815,1342225816,1342225817,1342225818,1342225819,1342225820,1342225821,1342225822
OD:815
Start:2011-08-06T12:52:46.000000 TAI (1691326366000000)
Duration:867.0 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(*)CameraIDBand(*)ReqWaveMin(*)ReqWaveMax(*)WaveMinWaveMaxRepetitions(*)ActualRepCapacitanceOutOfBandChannel
micrometermicrometermicrometermicrometerpF
SED B3Ared102R1140.000219.000139.563219.187120.14Noprime
-blue2, 3B2A,B3A--50.19575.765110.14Yes, partlyparallel
(*) = requested in HSPOT

System configuration summary

SPG pipeline version:SPG v14.2.2
SPG pipeline products creation date:2017-01-17T12:45:41.913000 TAI (1863348341913000)
Mission configuration:MC_H86ASTR_P67ASTR_S63ASTR_AO
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 1342225820
The offset between the central spaxel and the requested sky coordinates is  2.55" 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.