|
I'm afraid that aluminium is just not reflective enough for your needs. According to Sidgwick (Amateur Astronomers Handbook p111) Al has a reflectance of 89% in the uv, 88% in blue/green and 87% in red.
Geoff
PS: You could DYI and try silver like we used to do in the old days. Gets up to 96% in the red.
Last edited by Geoff45; 17-06-2008 at 06:47 PM.
|