Artificial Star

[MarkS]

My completed artificial star based on a sawn off key chain diode laser.



You all laughed at the prototype at Deep Sky Camp but now it's mounted in a proper box with two 1.5v batteries, a switch and a potentiometer for adjusting the brightness.  The pin prick of light is slightly less than 0.1mm

See also http://www.oldham-optical.co.uk/Red_Light_Source.htm, from where I got the idea.

Mark

[Mac]

very good.