Hi, my first thread here...
For an upcoming event in my community, where the public is encouraged to decorate their gardens with various light effects, I have got the idea to make a spotlight pointing straight up from my backyard. It shall be presenting a beam of light that is clearly visible for by-passers at a distance (say up to 500-1000 meters). Also, it should be safe to have it illuminated for 3-4 hours unattended.
Because of a limited budget, I first thought of just putting out a 1 kW PAR64 VNSP halogen spotlight but it has a beam divergence of 12° and 9° in X and Y, respectively, and I'm not sure if that it will be percieved as a "beam of light" fom a distance, also, the warmer output from the halogen is not as eye-catching as the blue light of an arc-based lamp.
So, since the reflector is a major cost in such a project, I wonder if it could be worthwhile scavenging the parabolic reflector from a VNSP PAR64 lamp and combining it with a short arc lamp? I'm kind of hoping that the reflector is well made and that the 12° and 9° divergences are due to the filament size.
Anyone have any thoughts about this approach?
Also - any tips on how to make the spotlight stable and safe for extended outdoor operation are appreciated.
Cheers, Jens.
For an upcoming event in my community, where the public is encouraged to decorate their gardens with various light effects, I have got the idea to make a spotlight pointing straight up from my backyard. It shall be presenting a beam of light that is clearly visible for by-passers at a distance (say up to 500-1000 meters). Also, it should be safe to have it illuminated for 3-4 hours unattended.
Because of a limited budget, I first thought of just putting out a 1 kW PAR64 VNSP halogen spotlight but it has a beam divergence of 12° and 9° in X and Y, respectively, and I'm not sure if that it will be percieved as a "beam of light" fom a distance, also, the warmer output from the halogen is not as eye-catching as the blue light of an arc-based lamp.
So, since the reflector is a major cost in such a project, I wonder if it could be worthwhile scavenging the parabolic reflector from a VNSP PAR64 lamp and combining it with a short arc lamp? I'm kind of hoping that the reflector is well made and that the 12° and 9° divergences are due to the filament size.
Anyone have any thoughts about this approach?
Also - any tips on how to make the spotlight stable and safe for extended outdoor operation are appreciated.
Cheers, Jens.