I do not know how much can be competent this resource, provided that all information about satellites, their number and type in Russia is traditionally secret. Besides If you compare features of digital cameras with capabilities of film cameras, film is usual response in ISO 100 consists of 60 million light-sensitive grains in a single frame of 35mm film. This means that sensor is the best digital SLR cameracan record only about 20% of what film can capture.