Appendix E
FCFs by reduction date

Ongoing development of the SCUBA-2 analysis has resulted in ongoing changes to the tau relationship and the FCFs. Depending on when your data were reduced you will need to apply different calibration values.







Date
FCF - 450μm
FCF - 850μm




Jy/pW/beam Jy/pW/arcsec2 Jy/pW/beam Jy/pW/arcsec2





until January 2012 383 4.9 1080 5.0
January 2012 - July 2012 606 6.06 556 2.42
July 2012 onwards 491 4.71 537 2.34










Date
Tau Relation


450μm 850μm



until January 2012 32 × (τ225 - 0.02) 5.2 × (τ225 - 0.013)
January 2012 - July 2012 26 × (τ225- 0.01923) 4.6 × (τ225 - 0.00435)
July 2012 onwards 26 × (τ225 - 0.01196) 4.6 × (τ225 - 0.00435)




You can find out when your data was reduced and hence what tau relation was applied by using the Kappa command hislist.

  %  hislist file | grep EXT.TAURELATION

This will return something like the following,

        EXT.TAURELATION.450=(26.0,-0.012),
        EXT.TAURELATION.850=(4.6,-0.0043), EXT.TAUSRC=auto, FAKESCALE=1,