Observation Summary

AOR label:Calibration_RPSpecFlux_1-RPSpecFlux_433C_nStdLine_Unchop_N57_Mkn231_0001
Target:mkn 231
Actual RA:12h 56m 27.81s
Actual Dec.:56° 54' 44.02''
Redshift:0.0 (z)
Start:2010-06-05T20:59:11.000000 TAI (1654462751000000)
Duration:2397.0 seconds (incl. spacecraft on-target slew time)

AOT and instrument configuration:

Mode:Pointed, unchopped grating scan
Bands:B3A R1 (prime diffraction orders selected)
Is bright:NO (default range mode)
Nod cycles:6

System configuration summary

SPG pipeline version:SPG v14.2.0
SPG pipeline products creation date:2016-07-23T16:18:28.243000 TAI (1847981908243000)
Mission configuration:MC_H42_P49_S55_CAL
Processed to level:RED: 2.0 BLUE: 2.0
Quality Control:PASSED

Quality comments

The offset between the central spaxel and the requested sky coordinates is 177.89" and the offset is  5.23" in the dispersion direction.
These have two consequences:
  1) For point sources offset from the central spaxel by >~4", the point-source correction applied to the spectra in the
point-source table (products which have "hpsspec" in their filenames) will become less and less applicable.
Alternative corrections tasks are provided in HIPE. See the advice in the "Product Decision Trees", which can be found on 
  2) 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.