University of Tartu SeaBird & DALE System Services

STATEMENT OF WORK 1. Objective/Requirements The NASA Goddard Space Flight Center (GSFC) requires the purchase of University of Tartu SeaBird and DALE System Services to provide the required radiometric calibration and characterization services for NASA GSFC field radiometers supporting validation of the PACE Mission data products. 2. Characteristics, Scope, and Specs Quantity Product Description 1 University of Tartu DALEC System Calibration and Charicterization Hardware Service Includes: 1.1 Absolute radiometric calibration of DALEC system in the wavelength range from 350 nm to 900 nm at each pixel central wavelength. ISO17025 accredited service. Provided data file includes non-linear response calculated from 2 different integration times. Not an ISO 17025-accredited service. 1.2 Angular response (irradiance) from -90° to +90° at 5° intervals, 2 azimuthal planes. Not an ISO 17025-accredited service. 1.3 Polarisation sensitivity (radiance) from 0° to 360° rotation angle at 15° intervals for each pixel central wavelength from 350 nm to 950 nm. Not an ISO 17025-accredited service. 1.4 Thermal characterisation at 5 temperature points: (+5, +10, +20, +30, +40) °C. Not an ISO 17025-accredited service. 1.5 Straylight distribution function for 2D matrix of excitation and emission wavelengths corresponding to each detector central wavelength from 350 nm to 950 nm. Not an ISO 17025-accredited service. 1 University of Tartu SeaBird/TriOS Sensors Absolute Radiometric Calibration Hardware Service 1 University of Tartu SeaBird Angular Response (Irradiance) Hardware Service 1 University of Tartu SeaBird/TriOS Polarisation Sensitivity (Radiance) Hardware Service 1 University of Tartu SeaBird/TriOS Thermal Characterization Hardware Service 1 University of Tartu SeaBird/TriOS Straylight Distribution Function Hardware Service -- 1 of 2 -- 3. Place of Performance Antonio Mannino - antonio.mannino-1@nasa.gov NASA Goddard Space Flight Center (GSFC) 8800 Greenbelt Road Greenbelt, MD 20771 4. Period of Performance NASA to Provide Shipping Schedule ARO 5. Notes Invoicing schedule shall proceed as follows: 25% - Payment August 31, 2026 25% - Payment December 31, 2026 25% - Payment March 31, 2027 25% - Payment at the conclusion of calibration services -- 2 of 2 --