Requirements:
1. Weighted or attached to a clamp for hands-free use, with a
long gooseneck or adjustable arm at least 1' long, for
use with large atlas pages
2. Brightness control--for matching to ambient light conditions
and conserving batteries
Would be nice:
3. Uses standard batteries, preferably D or lantern
4. Removable red filter--can be used as a trouble light
5. Spot/flood adjustment: wide area for locating stars,
narrow beam for destroying less dark adaptation
Here's an opening for you astro-entrepeneurs! If I get
any response at all, (a) I'll post a summary to the net,
and (b) I'll be surprised.
--
John Shipman/Zoological Data Processing/ucbvax!unmvax!nmtvax!shipman