The USDA-ARS, SJVASC, Parlier, CA has a requirement for a Gatan CCD SC200 Camera part # 830.10U3.

Instrument to be served: FEI Tecnai 12 operated routinely at 120kV.

Minimum resolution required: 2k x 2k pixels.  CCD Active area: minimum of 15mm x 15mm.  Scintillator: High-resolution phosphor optimized for kV.  Coupling: Fiber optics 1:1.  Binning: 1x 2x 4x.  CCD readout: Full or sub area.

Magnification to film: 1.3-1.4x Readout speed: 30MHz / 5MHz. Dynamic range: 14-bit. Frame rate: > 30fps @ 4x binning, full CCD area. Peltier cooling: 10°C. Dark current: < 2 counts / pixel / sec (1x binning). Readout noise: < 10 counts. Mounting position: On-axis TEM bottom port (retractable).

Gain uniformity: Transparent gain correction and dark subtraction; better than 10% r.m.s. in uncorrected images; better than 0.5% r.m.s. in gain corrected image.

Conversion efficiency: > 6 counts / primary electron (100kV) Resolution (Nyquist freq.): > 0.4 @ 100kV with 1x binning. Full Well: > 65,000 e-. Non-linearity: < 2%. Exposure setting: 1msec-30min.

This is not a sole source purchase and is not a small business set aside.