A red light flashlight will allow you to have illumination out at the telescope without ruining your night vision (dark adaptation). A green, nor any other color but red, will work for this. While LED flashlights have been showing up on the market recently, my recommendation would be to get a Mini-Maglite and the red filter for it. The Maglite is more durable and has an adjustable beam, the flashlight will cost you about $15 from most any hardware store and most places also have the accessory kit that includes the red filter (if you get a red and orange filter use them both) for about $5. You can also make a filter out of red plastic or paper (plastic is better) for any flashlight, but of course this is makeshift and a real filter is better. Hope this helps.

-Paul

: in laws just bought a new telescope,,,, should be lots of fun,, howver thats not my question,,,,, my question : is,,,, do astronomers prefer LED flashlights such as red or green over conventional flashlights ? : i would appreciate you help on this. : thanks : mark : earthparts@aol.com