Cosmos 1401

The Resurs-F1 (17F41) was one of three subseries of the Soviet Resurs-F1 film-return earth observation satellite family. They were a follow-on to the Fram (Zenit-4MKT) series. The Resurs-F1 satellites were based on the Zenit-4 reconnaisance satellites. They featured a Zenit/Vostok type 2.3 m spherical reentry capsule, which housed the cameras and film, a service module and a orbital maneuvering module. It was battery powered allowing for 14 days of operations, although up to 10 days on stand-by could be added. The differences between the 17F40, 17F41 and 17F43 versions is not clear. The Priroda-4 imaging system consisted of a three channel multispectral system that includes two KFA-1000 cameras and three KATE-200 cameras. The KFA-1000 (SA-20M) cameras with 1000 mm focal lenght provided stereo images of up to 5 m resolution with a 60 km swath width. It had a capacity of 1800 frames.