Community Release Note for SPIRE Calibration 1_2

The SPIRE calibration tree "spire_cal_1_2" was released in October 2009 to be compatible with HIPE v1.1 and v1.2.

Note that this calibration tree was an update to the 1_1 tree.

Impact of the changes compared to the previous release (1_1)

• improvement in Photometer absolute flux calibration
• improvement in Photometer maps due to improved relative detector positions
• jiggle positions correctly identified in photometer jiggle maps
• flagging of one additional photometer channel as slow, and one intermittant channel as dead
• inclusion of more photometer channels in maps (channels that were unusable in ground tests had no time constant values and so were excluded before)

• better spectrometer ZPD and time constants allows a better phase correction

Differences in individual products compared to the previous release

For detailed information about each product, see http://herschel.esac.esa.int/twiki/bin/view/Public/SpireCalibrationProducts.

Photometer

• SCalPhotBsmOps: use jiggle positions used inflight + update tolerances
• SCalPhotChanTimeConst: replace NaN with median value (other values from BODAC)
• SCalPhotDetAngOff: inflight numbers from fine scan analysis
• SCalPhotChanMask: update for flight
• SCalPhotFluxConv: Nanyao v2.1 (includes updated V0, flat field params and scaling factors of 1.27, 0.82 and 1.37)
• SCalPhotTempDriftCorr: Kevin v2.1 (+ earlier fix to A and B parameters)

• SCalSpecTempDriftCorr: fix error in A and B parameters
• SCalSpecBsmOps: update to actual jiggle positions + update tolerances
• SCalSpecChanTimeConst: update with flight numbers
• SCalSpecBandEdge: first guess astronomer values
• SCalSpecSmecZpd: update with flight numbers