SBIG FW5-8300 Filter Wheel

• Holds five 36mm drop in filters for un-vignetted imaging at any f/ratio with the ST-8300 or ST-4000XM cameras.
• Small footprint: 5 x 7 inches.
• Thin design - adds only 20mm backfocus (Total backfocus for ST-8300 with FW5-8300 is 38mm).
• Allows the use of an optional Nikon lens adapter with the filter wheel.
• Uses the camera's I2C port for power and commands. No additional cable to computer or power supply is required.
• Weighs only 22 ounces (632g) without filters.