ARISS is celebrating 40 years of human tended operations from space. STS-9 was the first time amateur radio was operated by a person while on orbit back in late 1983. To commemorate that beginning, an SSTV activity has been scheduled to start on Dec 16 about 10:15 UTC and run until December 19 around 18:00 UTC.
Operations will be on the standard 145.800 MHz downlink using SSTV mode PD120.
Received images can be posted at the ARISS Gallery. You can also apply for the an award at the ARISS SSTV award site.