Telescope filter (1.25") to 52mm filter ring adapter

This is an adapter, after the failure to be able to use a clip in filter (https://www.thingiverse.com/thing:3695976) I made, for H-alpha and other narrowband filters. To put it on the other end.

It is not threaded, and I had a 52mm filter that broke which I mounted it in. If you carefully screw a filter in the first time, it will act as it's own tap, and subsequent filters will screw in easily.

It works for my 55-200, and a 50mm and a 28mm, with a astro-modified/full spectrum D5300. Note that some lenses like the 50mm will not reach focus with longer wavelength reds like H-alpha, but can work with shorter ones like OIII. I'm guessing it may have something to do with the Nikon coatings, and at least for that lens it's an older one, so newer ones may work better, but the 55-200 has some issues as well.

The image is was taken with the 55-200mm at "f/4" (realistically, that drops a lot, so it's probably closer to f/8 at a guess based on the lens size of about 50mm, and the restriction due to the filer size at abut 27mm) on a tracking OnStep mount, stacked with Siril and with some level adjustment via Gimp and exported as jpeg.