I purchased a 0.20x fisheye adapter for my DSLR. It threads on to the lens and for once it appears to be what I wanted. I haven’t measured the results but this appears to as close to all sky as I’d want. This is about 2.5 hours of one minute images at ISO 800 & f/4 with my full spectrum Canon T5i with kit 18-55mm zoom and the fisheye adapter. There’s a glitch toward the end where I replaced the battery. Not too many meteors but I think it turned out pretty good for a first try.
