What is the Baader FCCT Filter Holder designed for, and which size do I need?
It is specifically designed to hold unmounted Baader filters for use within the Baader FCCT (Filter Changer Camera Tilter) system. Choose the version that matches your filters: 31mm or 36mm round filters with a 2mm thickness, or 2-inch filters with a diameter of 47.4mm.
How does the magnetic system on the FCCT Filter Holder work?
The holder uses built-in Neodymium magnets to securely lock it into the FCCT housing. This prevents it from falling out and ensures it seats in the exact same position every time for consistent optical alignment and reliable flat-field calibration.
Can I use mounted filters with this FCCT holder?
No. Each version is purpose-built for unmounted Baader filters of a specific diameter (31mm, 36mm or 47.4mm). Filters that are pre-mounted in threaded cells, such as standard 1.25" or 2" mounted filters, will not fit.
Why is this FCCT filter holder 3D-printed?
The 3D-printed construction allows for a precise, lightweight, and cost-effective design tailored specifically for each unmounted Baader filter size and the FCCT system. It is a specialized part for a very specific application.
If I'm taking flats with my telescope, why is the repeatable positioning of this FCCT holder important?
Consistent, repeatable positioning is critical for accurate flat-field calibration. The magnetic seating ensures that any dust motes or imperfections on the filter return to the exact same spot in the optical path, allowing your calibration frames to perfectly subtract them from your light frames.
Is this FCCT holder compatible with filter drawers from other brands?
This filter holder is specifically designed for the Baader FCCT system. It is not intended to be compatible with the Baader UFC (Universal Filter Changer) or with filter drawers or filter wheels from other manufacturers due to its unique shape and magnetic retention mechanism.
