The Swarovski ATX/STX spotting scope is Swarovski's flagship modular spotting scope kit. The ATX/STX is available in an angled or straight eyepiece . The eyepiece and objective bell are interchangeable, giving you the option to create a bunch the perfect setup for a variety of hunts -- from backpack hunts where ounce counting is critical, to vehicle hunts where you appreciate the big glass without care of weight, and everything in between, the Swarovski X series will excel. Features Swarovski's well known optical peak performance in twilight/low light conditions, viewing in shadows and excellent edge to edge clarity. The objective pieces for the ATX/STX spotting scope will also fit the Swarovski BTX eyepiece.