Card Lighter Handcrafted out of hardwood, the Card Lighter makes using AstroCards even more convenient with adjustable red LEDs. The Card Lighter backlights the AstroCards allowing the observer to adjust the light intensity to the level of the eye's dark adaption (Card Lighter is powered by a 9 volt battery). With a star chart inserted in the Card Lighter, you have everything needed for starhopping in one hand, freeing the other hand for other tasks such as writing, focusing, or in the case of larger scopes, simply holding onto a ladder. The Card Lighter also allows one to read larger star maps by removing the chart from the holder and holding the empty unit over the map, thus taking advantage of the Card Lighter's intensity adjustment that other lights don't offer.