Observation Summary

OBSID:1342199406
Instrument:PACS
AOR label:NearGalPACS-SB-06-blue
Proposal:KPGT_esturm_1
Target:NGC4038
Actual RA:12h 1m 53.12s
Actual Dec.:-18° 52' 11.31''
Redshift:0.005477 (z)
Purpose:---
Concat.:---
OD:412
Start:2010-06-29T21:08:45.000000 TAI (1656536925000000)
Duration:2505.0 seconds (incl. spacecraft on-target slew time)

AOT and instrument configuration:

AOT:PacsLineSpec
Mode:Pointed, Chop/Nod
Bands:B3A R1 (prime diffraction orders selected)
Is bright:NO (default range mode)
Chopper:large throw
Nod cycles:1

Observation block summary

Name(*)CameraIDBand(*)Wave(*)WaveMinWaveMaxRepetitions(*)ActualRepCapacitanceOutOfBandChannel
micrometermicrometermicrometerpF
Line 1blue3B3A57.63157.34857.933550.14Noprime
-red103R1-172.000173.784550.14Noparallel
Line 2blue2B3A63.53063.28063.781110.14Noprime
-red102R1-189.811191.328110.14Noparallel
(*) = requested in HSPOT

System configuration summary

SPG pipeline version:SPG v14.2.0
SPG pipeline products creation date:2016-07-23T17:54:49.868000 TAI (1847987689868000)
Mission configuration:MC_H42ASTR_P48ASTR_S52ASTR_RP
Processed to level:RED: 2.0 BLUE: 2.0
Quality Control:PASSED
Action:NONE

Quality comments

The offset between the central spaxel and the requested sky coordinates is  2.33" 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.