I have a strange attraction to small aperture, long-focus refractors. I have a 50mm f/20 cemented doublet refractor that I dearly love, and am currently building a 60mm f/15 doublet tube assembly. I just bought a vintage 1975 60mm JCPenny "Penncrest" of 1000mm focal length (that's f/16.7, folks!), on equatorial mount with all accessories, on eBay. I have an identical equatorial mount made some years later, with clock drive, that I've used as my astro-camera tracking platform for some years, and will steal the drive from it and install it on the Penncrest scope after I fully restore it. I love to use my small refractors in the backyard in summertime, pushing them to their limits. I wait until after midnight, when most cars are off the road, and the limiting magnitude from the valley can improve by 1 or more. With patience, you would be amazed at what you can tease-out of a small aperture from a light-polluted site, and the nostalgic feeling recaptures the wonder I first experienced in my parent's backyard, some 42+ years ago, with my first 3-inch telescope. What's your Dirty Little Astronomy Secret?