A zoom into the Orion Nebula starting with images made from Akira Fujii, David Malin and into the Hubble's Advanced Camera for Surveys mosaic revealing...
M42 Duster 40 mm self-propelled antiaircraft guns in service with the US National Guard. M42 Dusters shoot down an RCAT (Remote Controlled Aerial Target).
www.robnunnphoto.com dSLR's are great, but lenses are expensive, even second-hand ones. If you buy a M42 lens mount adapter on eBay, you've then got access...
