Traveling Master Cal Transfer Record

Sphere Date of Last Cross-Calibration Days since Last
SEDNA 2024-08-15 29
LUCY 2024-07-31 44
OBELIX 2024-02-20 206
TEIDE 2024-03-26 171
LILLE NONE N/A

Traveling Master Location

Master Current Location Shipped Date Days at Site
902 GSFC 2024-08-16 28
1096 GSFC 2024-06-06 99
1105 GSFC 2024-07-30 45

Last Sun Cal

Master Last Sun Cal Date Days Since Last Sun Cal
902 2023-06-02 469
1096 2023-07-26 415
1105 2023-09-01 378
1232 2023-09-01 378

Characterization Record (NASA calibration)

GRANDE Master Sphere

Date of Last NIST Characterization Days Since Last NIST Characterization
2024-09-04 9

GRANDE Master Sphere Radiance Trends

(History of NIST-traceable absolute calibrations)

All Lamps: 380nm

All Lamps: 440nm

All Lamps: 500nm

All Lamps: 670nm

All Lamps: 870nm

All Lamps: 1020nm

All Lamps: 1640nm


Observed Sphere Trends from Traveling Sphere Transfer Masters

(Based on raw signal data from cimel measurements)

Relative: Grande Plots

Relative: Sedna Plots

Absolute: Grande Plots

Absolute: Sedna Plots



Record of Sphere Transfer Corrections to Match GRANDE Radiance

SEDNA (@ GSFC)

All Wavelengths (plot)


LUCY (@ NEON) Trend

All Wavelengths (plot)


OBELIX (@ RIMA) Trend


TEIDE (@ RIMA) Trend