If you are ever out under the stars and want to look at a star chart, find an eyepiece or other accessory, or find something you maybe have dropped, the last thing you want to do is to use an ordinary white light torch – you’ll ruin your dark adaption in an instant! Furthermore, it will take you 20-30mins to get fully dark adapted again! So if you want to “see” or find things in the dark a red light torch is what you need to avoid destroying your dark adapted vision. For an interesting article on dark adaption see >>here<<.
Celestron offer such a red torch, called the Night Vision Flashlight, that is small and lightweight, and uses two red LEDs for illumination. A thumb wheel on the top of the unit is for switching the torch on and off, and is also use to vary the brightness of the LED’s to suitable level.
The flashlight is square in shape rather than round (typical shape of a torch). This is to prevent the unit from rolling off a table, or other surface where your accessories are placed. The torch also comes with a pre-fitted lanyard so it can be hung around your neck or around your wrist to stop it accidentally dropping to the ground. The Night Vision Flashlight is powered by a single 9V battery (already included).
A red torch one of the most useful and also most used accessories you can have to go alongside your other astronomical equipment and certainly worth having in your “astro kit”. Furthermore, if you do go to astronomical events, like organised star parties for example, you will be required to use one as its an important part of good “star party etiquette”.