ZWO 2" Filter Drawer (M42)

Solid all metal design, drawer has a very small amount of play when seated. I would recomend getting a second filter mount so when you want to use different filter or none at all you don't have to unscrew the filter as this can be quite a pain. Not sure if you can purchase that separately.

Very well built, easy to use makes changes of filters much practical

All metal very nice and fits my 2 inch filter perfectly. I like how it kind of locks in place when you push it in and you don’t necessarily have to tighten the knob

Bought this to add to the SpaceCat - DSLR combo I'm using. It's hard to get good focus with something like an HA filter or even a try-band filter screwed into the SpaceCat. Just not enough light gets through in Live Mode and it is a slow and tedious and error prone process to remove the filter, focus, and then put the filter back. I wanted to swap in a simple LP filter for focus and then put in my imaging filter. But the filter drawer, though it's only a few mm wide, pushes the DSLR back far enough it can't achieve focus. I need an adapter of some sort to deal with this. Still looking. The focus is fine with non-DSLR cameras. So take this as a newbie gotcha. Starizona seems to offer an option to remove the tilt plate on the Space Cat and connect the filter drawer closer to the scope. Will try that next.