Scientific research and laboratory apparatus, namely telescopes, observatories, spectrographs, binoculars, spotting scopes, cameras, all for use in the field of astronomy; educational apparatus and simulators, namely telescopes, observatories, spectrographs, binoculars, spotting scopes, cameras, all for use in the field of astronomy; optical devices, enhancers and correctors, namely filters, eyepieces, polarizers, corrector lenses, all for use with telescopes, spectrographs, binoculars, spott...