Zane has a plethora of OTAs. The observatory seems to have grown organically, akin to cell-division. The closest dome houses an 18" Dob on a tracking mount, primarily for visual use, the smaller dome at the rear houses a 10" Newt on a G11, primarily for imaging, a roll-off behind my rental car houses a 10" LX-200 on a wedge. There's another 10" LX-200 somewhere, an H-alpha solar OTA, a newly acquired 4 or 5" APO... You get the drift. But the major attraction is that the site is very dark, horizon to horizon. Goulburn and Canberra sky-glow are almost irrelevant. Recall that superb Oz transparency? Anyway, there was this dude named Guy, from Newcastle (not the UK one! but the one to the north of Sydney) who had brought along a 20" Dob for the weekend. Aperture fever? Guy uses an 8x10" view camera for his daytime hobby photography... I thoroughly enjoyed the superb visuals that 20" gave. Nebulae show up like well-exposed H-alpha monochrome images. Thanks Guy!