Daystar Quantum Front Flat Plate - 1.375"x24TPI (F)

It is the front (Gold side) plate for a Daystar Quantum filter. Its female 1.375"x24TPI threads accept the Daystar GM1D1 1.25" drawtube snout, so the filter can be fitted to a 1.25" focuser.

This plate is designed specifically for the Daystar Quantum series of H-alpha filters. It is not intended for use with Daystar Quark or other filter models.

You would replace the original front plate if you need to mount the filter to an optical system that doesn't match the stock adapter. This plate provides a 1.375"x24TPI thread that accepts the Daystar GM1D1 1.25" drawtube snout. A flat plate goes on the Gold side for on-axis refractor applications and the wedge plate for off-axis SCT applications.

Remove the existing front (Gold side) plate from your Daystar Quantum filter and fit this plate in its place. Daystar's Quantum Gold side plates such as the Q34XGF attach with three screws to the filter's 3-hole pattern; contact Daystar if you are unsure how your filter's plate is fitted. The process should be done in a clean, dust-free environment.

The Daystar Quantum Front Flat Plate has female (internal) 1.375"x24TPI threads. It is designed to screw onto a corresponding male thread.

Not directly. This plate takes the GM1D1 1.25" drawtube snout. For a 2" focuser, use the Q3GFTF Front Flat T Plate, which accepts the GM2DT 2" drawtube snout (discontinued, limited availability).