Equatorial telescopes; Filters for use in photography, namely, photographic filters; Lenses for astrophotography; Binoculars; Sighting telescopes for firearms; Telescopic sights for artillery; Microscope objectives; Reflecting telescopes; Body-tubes for telescopes; Magnifying glasses; Tripods; Lenses for telescopes; Oculars; Telescopes; Prisms; Telescopic sights