Night Vision Flashlight (93588)

OVERVIEW Keep your night vision intact by using a red flashlight when observing! The Night Vision Flashlight uses two red LED's for even illumination. An easy-to-use thumbwheel adjusts the brightness. Square shape keeps the Night Vision Flashlight from rolling away. Powered by an included 9V battery. DESCRIPTION A red flashlight is one of the most beneficial accessories you can own as an amateur astronomer, no matter how occasional your night sky observations may be. Also, if you plan to observe with other people, whether at a star party or in your own neighborhood, a red flashlight is an important part of good star party etiquette. When you are outside doing astronomy, or any night-time activity that requires you to see as well as possible, any white light is a detriment. Every time you use white light, your eyes react. The pupils contract, making their aperture smaller, and a smaller aperture always means less light-gathering, whether we are talking about your eyes or your