I found, at an astronomy supplies for amateurs shop, an Orion Red Beam II Variable Brightness Astro Flashlight , which has two red leds and no filter, and a rheostat (?) to wind up the level from dim to fairly bright, all with one hand.
It has a lanyard to hang it around your neck, possibly just long enough at full extension to dip it into your tray-full of chemistry if you are careless! It uses one 9v battery of the common kind.
Made in (where else?) China.
I like it very much.
Regards - Ross
Last edited by Ross Chambers; 02-08-2008 at 05:44 PM. Click to view previous post history.
Online source for the Orion astronomy flashlight: http://www.telescope.com/control/cat...C1D629.ivprod1
Rigel Starlite models (google for retailers) are similar.
scopestuff.com has a few choices under "red things" at their site: http://scopestuff.com/#Red%20Things
I'd recommend the torches/flashlights and replacement bulbs at http://superbrightleds.com/flashlights.htm as well. They are more reasonably priced than many other places.
BTW, you can easily and permanently diffuse an LED by roughing up its surface a bit with a fine synthetic abrasive pad. I do this so that it's easier to read star charts with red LEDs and more even illumination over a broader angle.