AstrOasis 7x2" Oasis Filter Wheel (USB-C, Flat 21mm, Clock-Level Precision) The AstrOasis 7x2" Oasis Filter Wheel was built with a simple goal: make a big-format wheel that’s thin, rigid, light-tight, and repeatably accurate—without the usual “filter wheel drama.” The result is a fully flat, 21mm-thick wheel that runs power + data over one USB-C cable, positions filters with a clever mechanical-switch base-position system, and seals against stray light like it takes the job personally. Completely flat, ultra-clean profile at 21mm thickness Motor is fully internal for a sleek, low-snag build USB-C handles power + data (no separate power input needed) High repeatability filter positioning for more consistent flat frames and calibration Uses mechanical switches to define each filter’s true base position Sensor layout focuses on reliable filter identification, not positional accuracy Special belt-like friction drive inspired by vinyl record players No gear backlash gaps to mess with accuracy Durable and reliable long-term Generates reverse tension after positioning to help “lock” the filter into its base position Large-diameter bearings for smooth, stable disc rotation without adding much weight Central rigidity screw (M4) ties front/back shells together at the center to increase stiffness Serious anti-light-leak design across all common leak paths Shell fitment designed like bottle caps for tight sealing USB-C socket selected to minimize light leak + blackout mat sealing at the port gap Unused screw holes can be sealed from inside with dedicated screws Elastic light-shielding spacer can seal the filter-window interface to camera/OAG Filter flexibility: supports 2" mounted filters and 50mm unmounted filters 2" mounted filters thread directly into M48x0.75 50mm unmounted filters use masks + gaskets Camera + OAG compatibility built in Works with ZWO / QHYCCD / ToupTek / Player One cameras Compatible with ZWO / QHYCCD / ToupTek OAGs No need to remove the filter disc to bolt it to the camera Access holes allow screws/screwdriver to pass through and mount cleanly Detection system is designed so these holes don’t affect filter ID accuracy Cold-weather capable: supports operation down to -30°C Modern control support: USB HID (driver-free), plus ASCOM and INDI options Built-in temperature sensor for monitoring your environment/hardware state Specifications Format / capacity: 7-position wheel for 2" class filters (7x2") Thickness: 21mm (flat profile, internal motor) Power & data: USB Type-C (single-cable power + communication) Positioning system: Mechanical switch base positioning + sensor identification scheme Drive method: Belt-like friction drive with reverse-tension stabilization Bearings: Large-diameter bearings for stable disc motion Rigidity feature: Central M4 screw locks front/back shells at center contact point Light sealing: Shell interface sealing, USB port blackout sealing, internal plug screws for unused holes, filter-window spacer sealing Filter support: 2" mounted filters via M48x0.75 threads 50mm unmounted filters via masks + gaskets Camera compatibility: ZWO / QHYCCD / ToupTek / Player One OAG compatibility: ZWO / QHYCCD / ToupTek Connection options: Screw mounting via M2.5 or M3 hardware through shell holes M48–M42 adapter for M42-threaded cameras/OAGs Included M48–M54 adapter (16.5mm thickness) for telescope-side connection solutions Operating temperature: down to -30°C Interfaces / control: USB HID (driver-free), ASCOM, INDI Sensor: Built-in temperature sensor What’s in the box? AstrOasis 7x2" Oasis Filter Wheel USB Type-C interface (single-cable operation) Filter mounting support for 2" mounted and 50mm unmounted filters (masks/gaskets method) M48–M42 adapter (for M42-threaded camera/OAG connection method) M48–M54 adapter (16.5mm thickness) for telescope-side connection Dedicated internal sealing screws (for unused mounting holes) Light-shielding spacer / sealing elements (for camera/OAG interface sealing) Software and Docs User Manual ASCOM Driver FirmWare
