The precision blackbody sources developed at the All-Russian Institute
for Optical and Physical Measurements (Moscow, Russia) and their char
acteristics are analyzed. The precision high-temperature graphite blac
kbody BB22p, large-area high-temperature pyrolytic graphite blackbody
BB3200pg, middle-temperature graphite blackbody BB2000, low-temperatur
e blackbody BB300, and gallium fixed-point blackbody BB29gl and their
characteristics are described. (C) 1997 Optical Society of America.