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STC-428-M provides extremely high sensitivity, low noise 7-megapixel imaging in a compact package.
The STC-428-M features:
For years mature CCD sensor technology, embodied in our venerable STF-83ooM camera, set the standard for high sensitivity, low noise, high dynamic range, and images free of pattern noise.
The new STC-428-M scientific CMOS camera represents a major improvement over CCD technology. Compared with previous CCD models, the STC-428-M features higher sensitivity (78% QE versus 56%), significantly lower read noise (2.5 e- versus 9.3 e-), and 20X faster readout.
While a single exposure on the IMX428 sensor can equal CCD dynamic range, the combination of fast readout and very low read noise allows for stacking many shorter to produce a greater dynamic range than previously possible. The built-in StackPro™ capability can automatically divide your exposure into up to 16 shorter sub-exposures, and stack them inside the camera prior to download. This increases dynamic range without imposing greater processing requirements on the host computer.
Our SmartCooling™ active regulation maintains the sensor temperature to within 0.1ºC, and minimizes fan speed based on heat sink temperature for longer life and quieter operation.
The STC-428-M supports several optional gain modes:
The STC-428-M scientific CMOS camera features StackPro™, a revolutionary feature that performs image stacking inside the camera.
While the IMX428 sensor has a dynamic range on a par with its CCD predecessor, it is limited to 12-bit data (0-4095). At the same time, it also has far lower read noise, which means you can stack many more shorter exposures without degrading signal-to-noise ratio. As great as this sounds it does result in a lot of extra disk usage and post-processing.
StackPro™ performs the stacking automatically, inside the camera. It automatically subdivides your exposure into up to 16 individual sub-exposures and stacks them inside the camera prior to download. This eliminates the excessive amounts of data cluttering up your hard drive.
As an example, by stacking 16 sub-exposures inside the camera you can get:
For comparison, our STF-8300M CCD camera sports typical read noise of 9.3 e-, with a full well depth of 25,000 e-. In the medium gain 16X stack mode, the STC-428-M has similar read noise and yet has over six times the dynamic range!
An optional internal mechanical shutter is available, to aid in acquiring calibration dark frames.
Our products are compliant with CE, FCC, and IC requirements. RoHS, REACH, and conflict mineral compliance documentation is available.
Diffraction Limited has been certified by British Standards Institution (BSI) to ISO 9001:2015 Quality Management under certificate number FM 719560.
| A/D Converter |
12-bit with High Gain / Low Gain modes |
|---|---|
| Sensor Size |
14.4 mm X 9.9 mm |
| Computer Interface |
USB 3.0 (USB 2.0 compatible) |
| Cooling Delta |
30 °C |
| Dark Current e-/p/s |
typical 0.1 e-/p/s at -5C |
| Exposure |
0.001 – 3600 seconds |
| Full Frame Download |
90 ms typical |
| Imaging Sensor |
IMX428 |
| Imaging / Pixel Array |
3208 x 2200 pixels |
| Peak QE |
78% typical |
| Pixel Size |
4.5 x 4.5 micron |
| Power |
12VDC, 4A max |
| Read Noise (typ) |
1.9 e- High Gain, 2.5 e- Med Gain, 5 e- Low Gain |
| Temperature Regulation |
Yes |
| Total Pixels |
7.1 megapixel |
| Shutter |
Global Shutter (electronic) |
| Weight |
1.7 lbs |
| Binning Modes |
1×1, 2×2 |
| OS Compatibility |
Windows 7, 8, 10 x86/x64, MacOS 10.14 “Mojave” x86 binaries, Ubuntu 18.04 LTS x64, Raspbian Buster armhf, Ubuntu MATE arm64 |
