Stadium light [was: trans material file]

Tim. I hope you are looking just for a way to import distribution data
into Ecotect.

In that case, IES is your friend. IIRC you define it as a type of
material in Ecotect. If you go through the materials you should find
some examples for "light materials" which should get you going.

If you want to roll your own IES file ...

Are you sure about this? If you have a fitting that's safety-tested
enough to go in a stadium you should be able to get an IES file. If
not I would still look for a distribution file of a similar fitting
before I start to hack together my own IES file.

If you really want to dive into it I recommend "Thinking
Photometrically (II)" by Ian Ashdown as first start:

http://www.dial.de/CMS/German/Articles/Licht/Service/Downloads/Thinking_Photometrically_II.pdf

Good luck,
Thomas

···

On Mon, Jan 31, 2011 at 6:41 AM, Tim Metcalfe <[email protected]> wrote:

Hello all,

I am looking to write a file to import in Ecotect for a 75 fc electric
stadium light.

Since electric lights are not my usual I am at a loss. Any suggestions?

I don't think it's all that difficult to create an IES file from scratch
(assuming one has a proper test report and either IES LM-63 or Ian's great
paper that Thomas cites below). Lighting Analysts has a nice piece of
software called "Photometric Toolbox" that guides you through the process
of generating your own IES file as well. But again, this assumes you have
a photometric test report with all the candela values in hand. If you
don't have that, Thomas' suggestion of trying to find a similar product
that has been tested is the way to go.

Rob Guglielmetti IESNA, LEED AP
Commercial Buildings Research Group
National Renewable Energy Laboratory
1617 Cole Blvd MS:RSF202
Golden, CO 80401
T. 303.275.4319
F. 303.630.2055
E. [email protected]

···

On 1/31/11 6:31 AM, "Thomas Bleicher" <[email protected]> wrote:

On Mon, Jan 31, 2011 at 6:41 AM, Tim Metcalfe <[email protected]> >wrote:

Hello all,

I am looking to write a file to import in Ecotect for a 75 fc electric
stadium light.

Since electric lights are not my usual I am at a loss. Any suggestions?

Tim. I hope you are looking just for a way to import distribution data
into Ecotect.

In that case, IES is your friend. IIRC you define it as a type of
material in Ecotect. If you go through the materials you should find
some examples for "light materials" which should get you going.

If you want to roll your own IES file ...

Are you sure about this? If you have a fitting that's safety-tested
enough to go in a stadium you should be able to get an IES file. If
not I would still look for a distribution file of a similar fitting
before I start to hack together my own IES file.

If you really want to dive into it I recommend "Thinking
Photometrically (II)" by Ian Ashdown as first start:

http://www.dial.de/CMS/German/Articles/Licht/Service/Downloads/Thinking_Ph
otometrically_II.pdf

Good luck,
Thomas

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general