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UHP light beam from afar Thanks to its tight and intense light beam, rich in blue and green, the light projected by the UHP lamp from [url=https://trad-lighting.net/gallery/displayimage.php?pid=1222]that system[/url] is quite visible from afar. Here we see its luminous streak across the night sky from one kilometer away and a hundred meters higher. Not bad for a 200 W spot! Keywords: Miscellaneous

UHP light beam from afar


Thanks to its tight and intense light beam, rich in blue and green, the light projected by the UHP lamp from that system is quite visible from afar. Here we see its luminous streak across the night sky from one kilometer away and a hundred meters higher. Not bad for a 200 W spot!
EEG.jpg IMG_9402.JPG IMG_9270.jpg IMG_9418.JPG IMG_9254.jpg
File information
Filename:IMG_9254.jpg
Album name:Max / Nightscapes and light art
Keywords:Miscellaneous
Filesize:1940 KiB
Date added:18 Apr 2026
Dimensions:1200 x 1800 pixels
Displayed:18 times
DateTime Original:2007:08:15 00:19:38
Exposure Time:30 sec
FNumber:f/2.8
Flash:No Flash
Focal length:17 mm
ISO:800
Model:Canon EOS 350D DIGITAL
Software:Adobe Photoshop 25.7 (Windows)
White Balance:0
URL:https://trad-lighting.net/gallery/displayimage.php?pid=1221
Favourites:Add to Favourites

Comment 1 to 4 of 4
Page: 1

AgentHalogen_87   [Sat 18 Apr 2026 at 14:57]
Just a searchlight beam smashing its way through the sky with absolute zero monkeys given. It looks quite cool Cool Is it just moisture in the air that's allowing the beam to be vivible?
Sammi   [Sat 18 Apr 2026 at 15:45]
What a wonderful sight.! Cool
Ria   [Sat 18 Apr 2026 at 16:01]
Our Louie (wherever he is Crying or Very sad) says you can't spell munkys Razz Wink
Max   [Sat 18 Apr 2026 at 16:13]
Tyler Durden doesn't agree with you, Ria. It's Space Monkey, not munky Wink

Sammi - It was even better in person, the beam was very clearly visible to the naked eye. Digital cameras at the time were way too noisy and had too little dynamic range to permit a proper rendition of such scene. I did my best in post prod to compensate for that though. Now I think I'll use this projector again this summer, I have a far better photographic equipment now (lens and camera). Or I'll make a new projector - I have more powerful UHP lamps with more efficient optics in stock now, maybe it's time for a new project involving condenser lenses and elliptical-mirrored lamps... I've always wanted to combine them in order to produce brighter and narrower light beams.

AgentHalogen_87 - The beam is visible due to a combination of processes such as the Mie and Rayleigh scatterings in the dry but a bit dusty atmosphere. The blue-rich light helps there as this results in a particularly effective Rayleigh scattering (i.e., what gives the clear daytime sky its blue color).

Comment 1 to 4 of 4
Page: 1