Mid-IR sky monitor (MISM)
• “Warm” CVFs for 4.3 - 7.7 mm and 7.7 -
14.1 mm, plus fixed filters
• NEFD:  27mJy/square arcsec/ΦHz
• Chopping frequency: 1 kHz
• Cooler:  Inframetrics RC-1
• Detector:  Judson HgCdTe @ 77K
• Instrument kept at -30° by heat-pipe