Filter Slider - Filter Blank (FS-BLANK)

Finally, a solid blank that actually blocks all light instead of those flimsy plastic caps. I just screw it into the filter slider and take perfect dark frames without any light leaks around the edges. Exactly what my mono CCD needed for clean calibration.

Had the perfect weight and fit to slide right into my slider, and it completely blocks the light path for crisper calibration frames. Exactly what I needed.

Finally, a simple way to cap my filter slider for dark frames without fumbling with a lens cap. The solid blank fits perfectly and stays secure, making calibration frames much faster to shoot.