SBIG STX Series Operating Manual page 4

Appendix B - Capturing a Good Flat Field .............................................................................................................27
B-1. Technique ......................................................................................................................................27
Appendix C - Camera Specifications.......................................................................................................................28
Appendix D - Connector and Cables.......................................................................................................................29
Power Jack .....................................................................................................................................................................29
Scope Port ......................................................................................................................................................................29
I2C/AUX Port ...............................................................................................................................................................29
Product Description
The SBIG STX Series represents the ultimate in astronomical imaging systems. The
integrated design allows the user to select either Ethernet or high speed USB 2.0 connection
to the control computer. The Model STX-16803 uses Kodak's KAF-16803 CCD with 16
million pixels at 9 microns. The sensor measures almost 37mm square. The built-in tracking
CCD is a Kodak KAI-340S with 640 x 480 pixels at 7.4 microns. The STX series has
superior cooling to -50 degrees C below ambient with air only. Water-cooling is also
possible.
Built-in Guiding CCD with Adjustable Focus: The guiding CCD in the STX cameras is a
KAI-340 CCD with 640 x 480 pixels at 7.4u. As the imaging CCDs get larger, the guiding
CCD gets pushed farther away from the center of the optical axis. Depending on the nature
of the optical system, this can cause the image on the guiding CCD to be slightly out of
focus when the image on the main CCD is in focus. To address this, STX cameras have a
user accessible adjustment for changing the focal point of the on-board guiding CCD.
For external guiding, the same same KAI-340 CCD is also used the optional Remote Guide
Head, and in the new STX Guider accessory for the FW7-STX filter wheel. The STX
Guider allows you to use the smaller, less expensive 50 mm square filters, and increases the
guider FOV with focal reduction optics. The smaller filters also mean that the FW7-STX
wheel can hold 7 filters instead of 5.
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