MCBB                         MSBB

Cavity                 Baffled, retro-cone base      Baffled, V groved base

Cavity Surface         MM enhanced optical black     Aeroglaze Z306 diffuse black

Temperature Range (K)  T1  230-350K, T2  440-520K    80K

Base Temp Spatial      T1 <= ±50mK, T2 <= ±100mK     <= ±100mK
     Uniformity (K)

Base Temperature       T1 <= ±30mK, T2 <= ±30mK      <=±100mK
     Gradients (K)

Baffle and Aperture    T1 <= ±2K,   T2 <= ±5K        <=±5K
     Temp Grad (K)

Estimated Emissivity   T1 >= 0.999,  T2 >= 0.97      >=0.99