I searched for a thread here on the general topic of "mirror lenses" and couldn't find one, so I thought I'd go ahead and start one. Feel free to post photos and comments on your favorite light buckets (a little astronomer lingo there). I've owned quite a few different mirror optics over the years, ranging from your typical 500mm mirror to a couple of different 10" diameter f/10 (2540mm) telescopes. My first mirror lens was a Sigma 600mm f/8 I bought back in about 1984. At first, I thought it was junk, but that was before I learned how to use it properly. Once I had learned what it took to take good pics with a long telephoto, I changed my mind. It was actually an excellent optic. One of the best I've ever owned, in fact. Here are some old pics taken with that lens. They are film based images, so there will be grain. This is actually a Kodachrome slide, but the sunlight on the water was so intense, it washed out all color. Canon A-1, Sigma 600mm f/8 mirror. This is a 100% crop of a portion of the above image: Canon FTb, Sigma 600mm f/8, Kodachrome 64: A 100% crop of the above image: Tamron 55BB SP 500mm f/8 with Sony NEX 7 @ ISO 100 My most recent mirror acquisition -- a Meade 1000mm f/11 lens/spotting scope/telescope -- sort of a triple purpose optic. It came with a nice aluminum case, a camera adapter with T-mount, two eyepieces of respectable quality, and an erecting prism for the eyepieces. The lens has an integral fixed tripod mount. It takes decent pics too. The resolution is good. Under strong lighting conditions, it exhibits a LOT of purple CA, but under the overcast conditions I had when I took the following shots, the CA stayed away. This is a section of worn-out fencing, about 40 meters from the camera/lens: A pole-mounted transformer, located about 60 meters from the camera/lens. First the transformer, second is a crop of the label on the transformer. The label exhibits excellent detail. Okay, it's your turn.