Markus Nielbock (MPIA Heidelberg) PACS ICC Photometer Workshop 15th - 17th September 2010 PACS Photometer Responsivity Drift Analysis Markus Nielbock (MPIA Heidelberg) Markus Nielbock (MPIA) – PACS Photometer Responsivity
Correlation with evaporator temperature Markus Nielbock (MPIA) – PACS Photometer Responsivity
Correlation with M1 temperature - initial findings Markus Nielbock (MPIA) – PACS Photometer Responsivity
Correlation with M1 temperature Markus Nielbock (MPIA) – PACS Photometer Responsivity responsivity drift seems to be partly correlated with M1 temperature further influence suggested some of it due to bolometer evaporator temperature drift
Individual chop-nod positions Markus Nielbock (MPIA) – PACS Photometer Responsivity
Individual chop-nod positions Markus Nielbock (MPIA) – PACS Photometer Responsivity
Results clear responsivity variations in time (blue filter) more severe for chop-nod than for scan map possible anti-correlation with M1 temperature strong discrepancy between chop-nod positions one of four positions shows similar shift like scan map (after update of bad pixel list) Markus Nielbock (MPIA) – PACS Photometer Responsivity
Flux gradient in FOV after photAvgDith() after photDiffNod() Markus Nielbock (MPIA) – PACS Photometer Responsivity after photCombineNod()
Bad pixels at source locations Markus Nielbock (MPIA) – PACS Photometer Responsivity
Comparison: Mad Map vs. Scanamorphos Markus Nielbock (MPIA) – Mad Map vs. Scanamorphos Mad Map Scanamorphos Scanamorphos – Mad Map