The SBIG 50mm Square Red Filter are compatible with FW7-STX filter wheels, which work with STX-16803 and Aluma AC4040 cameras. They are specifically built to SBIG's exact specifications. This filter is also parfocal, avoiding the need for unnecessary refocusing. Your night sky images with these filters will be the envy of even the most seasoned astrophotographers!
Red Filter only. All other pictured filters sold separately