Take your astrophotography and astronomy to the next level with the Starlight Xpress USB Filter Wheel. This configuration of the wheel features a massive rear 72mm male thread adapter that allows direct mounting of their large-format TRIUS SX-35, TRIUS SX-36, and TRIUS SX-46 and TRIUS SX-56 cameras. The larger adapter enables unimpeded light throughput, even at fast focal ratios, to ensure full coverage of the imaging sensor to capture full-frame shots without vignetting. Complementing the rear mounting adapter is a 5-position carousel that accepts large 50.8mm round and unmounted filters, further ensuring full throughput. The front mount is a standard female Schmidt-Cassegrain telescope (SCT) mount adapter so it can be securely attached to your telescope without the need for additional adapters so the back focus distance is minimized.
Sub-miniature DC gear drives make quiet and vibration-free filter changes and each position is programmable within the control software that is available as a free download from the SX website. The wheel is also compatible with many popular third-party astronomy and imaging software such as AstroArt and MaximDL. The wheel is connected to a computer via a USB 2.0 port for software control and conveniently is powered by the USB cable. For those who don't want to or can't tether the wheel to a computer, there is an optional handbox control unit and independent power supply. Additionally, a standard serial port allows another computer control option, but power is not supplied, so a separate power supply will be needed.
If your rig or need changes, the front and rear adapters can be swapped for other optional mounting adapters and the carousel can be switched out for others that are available separately that accept different size filters—eliminating the need to purchase an entirely new wheel. This is just the filter wheel and carousel; you need to provide the filters of your own choosing.