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SBIG STF-8050 CCD Camera

Price: $3,895.00



STF-8050M, STF-8050C and STF-8050SC

The STF-8050 camera comes in monochrome (STF-8050M) and two color models.  The color models are available with either the standard Bayer Color FIlter Pattern (STF-8050C) or the higher sensitivity TRUESENSE Sparse Color Filter Pattern (STF-8050SC).  The KAI-08050 Image Sensor is an 8-megapixel CCD in a 4/3" (22 mm diagonal) optical format.  Based on the TRUESENSE 5.5 micron Interline Transfer CCD Platform, the sensor features broad dynamic range, excellent imaging performance, and a flexible readout architecture.  The TRUESENSE Sparse Color Filter Pattern provides a 2x improvement in light sensitivity compared to a standard color Bayer part. 

KAI-08050 CCD Key Features:

  • Available in Monochrome, Bayer Color Pattern or TRUESENSE Sparse Color Filter Pattern
  • Progressive scan readout
  • Flexible readout architecture
  • High frame rate
  • High sensitivity
  • Low noise architecture
  • Excellent smear performance
  • Package pin reserved for device identification

STF-8050 Highlights

  • Large, High Resolution 8.3 Megapixel CCD with 5.5 micron pixels
  • Fast, Dual Channel Read Out
  • Full Frame, High Res, Low Noise, 16-bit download in 0.5 seconds.
  • Electronic shutter for fast exposure times (0.001 sec to 3600 sec.)
  • STX/STXL style pin-fin heat sink and 70mm fan
  • Exceptional cooling delta greater than -50C with air only
  • Sapphire Chamber Window
  • Very Low Read noise ~ 9e-
  • Very Low Dark Current ~ 0.01e- at -20C
  • Antiblooming Protection
  • Uses STF 8-Position Filter Wheels and OAG
  • Accepts Nikon and Canon EOS lens adapters


Description of the TRUESENSE Sparse Color Filter Pattern.

The TRUESENSE Color Filter Pattern represents a new paradigm for obtaining full-color images from a single image sensor.  By adding panchromatic (or "clear") pixels to the standard red, green, and blue pixels traditionally used for color capture, image sensors can realize a significant increase in light sensitivity – between two and four times compared to standard designs – while retaining overall image quality and color fidelity.  Image sensors using this design allow end users to capture better pictures and video under low-light conditions.

In addition to the new color technology, the STF-8050 has been optimized for fast full frame download and maximum cooling in an STF sized package.  A high resolution 8.3 megapixel 16-bit frame will download in about 1/2 second using the dual channel readout mode.  Even at this rapid download rate, the read noise remains exceptionally low, about 9e-. The tables below show download times and frame rates for the STF-8050 camera measured using our high speed drivers:   

STF-8050 Download time in seconds for single frame  
  Full Frame Half Frame Qtr Frame Planet Focus
High Res 0.59 0.41 0.27 0.06 4.3 fps
Med Res 0.48 0.28 0.16 0.06  
Low Res 0.34 0.2 0.13 0.05  
Ultra Low 0.16 0.11 0.08    


STF-8050 Frames per second saved to disk using high speed drivers
  Full Frame Half Frame Qtr Frame Planet Focus
High Res 2 3.4 5.3 4.3 4.3
Med Res 3.4 5.3 7.5    
Low Res 4.5 6.6 8.6    
Ultra Low 8.1 9.5 10    


The astronomy customer will notice from the specifications that the STF-8050 is very similar to the STF-8300M in size and performance with the exception of the shutter and download rate.  The STF-8050 was developed primarily for the OEM market, particularly for microscopy applications where short exposures and high frame rates made possible by an electronic shutter are more desireable than having a mechanical shutter for automatic dark frames.  Because of this, the STF-8050 cooling design is very robust and the camera is capable of a cooling delta greater than -50 degrees C.  This means that the camera at room temperature can cool enough to reduce the dark current to 1/100th of an electron per pixel per second, or less.

The combination of a large 8.3 megapixel CCD, high resolution 5.5 micron pixels, low noise 16-bit images and fast exposure times make the STF-8050 camera ideal for solar and lunar imaging.  The image below is a portion of a single frame of the entire solar disk taken with the STF-8050M camera using a Lunt 80mm Solar Scope.    


Imaging CCD
Imaging/Pixel Array
3320 x 2496
CCD Size
18.3 x 13.7 mm
Total Pixels
8.3 Million
Pixel Size
5.5 x 5.5 microns
Full Well Capacity
Dark Current e/p/s at 0 C
< 0.02e-/pixel/sec @ -15C
Peak QE
0.001 to 3600 sec.
Correlated Double Sampling
A/D Converter
16 bits
A/D Gain
Read Noise
Binning Modes
1x1, 2x2, 3x3, 9x9, 1xn
Pixel Digitization Rate
10MHz / 20MHz
Full Frame Download
0.5 sec
Cooling Delta
Greater than -50C with air only
Temperature Regulation
+/- 0.1 deg. C
12V, 3.8A
Computer Interface
USB 2.0
Computer Compatibility
Windows, Mac
5 x 4 x 3 (+ 1 inch for fan)
2.1 lbs (0.96 kg)
0.69 inches
Filter Wheel Option
FW5-8300 or FW8-8300
Self-Guiding Filter Wheel
Uses ST-i with OAG-8300
Filter Size
Adaptive Optics Option
Remote Guide Head
Uses ST-i with OAG-8300
Lens Adapter
C-mount, Nikon, Canon EOS
OAG Option

KAI-08050 Mono
KAI-08050 Color

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