Advanced Question Local light source attenuation calculation

DaveS

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I'm trying to fix up the payload bay flood lights in SSU and have hit a bit of stumbling block when it comes to the attenuation variables. I can't seem to get my head wrapped around how they work. Could someone help me here? I've attached two tables that show the specs of the exterior payload bay lighting. FC is Foot-Candles and BCP is Beam Candle Power in both tables. BCP is average candle power over 50% of the peak intensity.
 

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jarmonik

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This isn't exact science. Human eye response to a light plays a major part. So, without a human eye model those numbers doesn't really mean very much.

att0: This parameter is usually 0.01
att1: This parameter is usually 0
att2: This parameter is what actually matters. att2 = 1 / d^2, where "d" is the distance where the light intensity equals sun-light.

The docking light in DeltaGlider is somewhere 10kW-100kW, and the landing light is s giga-watt grade light source. So, not exactly with in a realistic range.
 
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DaveS

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Thanks for the reply, that makes it much simpler to understand. One final question: Is there anyway to calculate the color specs for a local light given a certain color temperature?
 

Arvil

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Try ‘Color temperature’ at Wikipedia. It has several equations related to black body color responses by temperature including for incandescent lighting and toward the end treats more modern applications such as LED lighting. Hope that helps.
 

4throck

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Google showed me this:
color-temp.jpg

From https://www.premiumbeat.com/blog/understanding-set-lighting-and-color-temperature/

The temperatures look correct. Actual RGB values will depend on intensity, but I think you can make an educated guess based on this image.
 
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