Observation Summary

OBSID:1342199740
Instrument:PACS
AOR label:Calibration_RPSpecFlux_1-RPSpecFlux_433B_nStdRange_UnchopFluxB2A_AlpBooOff_0001
Proposal:Calibration_rppacs_28
Target:alpha Boo Off
Actual RA:14h 15m 38.98s
Actual Dec.:19° 13' 34.07''
Purpose:Undefined
Concat.:---
OD:415
Start:2010-07-03T12:18:12.000000 TAI (1656850692000000)
Duration:366.0 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:High (default spectral mapping)
Nod cycles:1


System configuration summary

SPG pipeline version:SPG v14.2.0
SPG pipeline products creation date:2016-07-23T18:42:20.248000 TAI (1847990540248000)
Mission configuration:MC_H42ASTR_P52ASTR_S55ASTR_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 1342199739
The offset between the central spaxel and the requested sky coordinates is  1.71" 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.