Index of /light/luminance/sqm/glass_ball

	Name	Last modified	Size	Description
	Parent Directory		-
	800/	2006-11-10 21:48	-
	320/	2006-11-10 21:48	-
	sqm_ball.zip	2006-11-10 21:48	1.0M
	selected.txt	2006-11-10 21:43	294

components: a glass ball, O-ring, slice of a rubber pipe; a complete adapter assembled in a cut film can; SQM:

plain SQM with a cut O-ring, glued to the plexi, and with a bit cut rim:

adapted SQM (field of view is some fifteen degrees, readings are getting just about 0.2 mag larger):