Victor.. or anybuddy else...
 

Anyone know where to rent things such as a lux meter and devices such as that.

This whole Icecap thingy going on on RC has me wanting to settle this once and for all. In the new year I want to set up my 33 with three different ballasts. Icecap, LOA and a VHO from Albrite. I cna't find anywhere that someone has sat down and measured the lumens output on an icecap LOA and the others. I am sooo curious now. I will be buying the new ballasts in possibly feb or march. But I want it set up and ready to go before hand. I will run each ballast for about a month measuring data each day and recording it.

I'd just like to see some factual numbers. As it stands now I have only heard what people are assuming what is happeneing. No real numbers. And I dont assume. It makes and A$$ out of U and ME.

I know a lot of you here have loads of experience with lighting care to help?

nuff said.

Any input or help is welcomed. Assistance as well. [img]images/smiles/icon_wink.gif[/img]

[ 05 December 2001: Message edited by: DJ88 ]

Victor.. or anybuddy else...
 

Hi,

You can rent them from any professional camera place. Kerrisdale Cameras, Broadway Cameras and etc...might have them.

OR...if you have an SLR with a good fast lens...then you can use that. The thing you'll need a gray card to make an accurate measurement.

How about this...setup your camera to take a picture of your reef. Set the camera to be same for every shot...and just change the lights. Any "noticable" change in lighting should be seen in the pictures.

- Victor.

[ 05 December 2001: Message edited by: reefburnaby ]

Victor.. or anybuddy else...
 

Thanks Victor.

So everyone knows I am not looking to bash any one company.

I just want hard numbers I can look at.

Victor.. or anybuddy else...
 

Good idea Victor. I will do that to supplement the data collected.

Because I have seen posts where lighting was comparead and some people were so set in their ways they wouldn't see an obvious difference.

Victor.. or anybuddy else...
 

I am going to go look around for a light meter today to see if I can find one for cheep that will do the job.. if I find one I will let you know.

Steve

Victor.. or anybuddy else...
 

try a Hydroponic's company they have many devices such as light meters and pH testers, etc.

Patrick

Victor.. or anybuddy else...
 

DSP, FFT's

[img]images/smiles/icon_eek.gif[/img] [img]images/smiles/icon_eek.gif[/img] [img]images/smiles/icon_eek.gif[/img]

EEEEEEEK!!!!!!!!!!!!!!!!!!!


lol.. man I can cringe some days at those acronyms.. lol

Victor.. or anybuddy else...
 

Well guys,

I am gonna do it..

I will be buying a few ballasts over the next little while and am going to start measuring everything I can with them. I have access to a lot of equipment thanks to my instructors at BCIT. And will look into renting or buying a light meter of some sort. I just want to know what the real numbers are.. None of this guessing..

Anyone want in on this to help? I will probably be buying a PFO ballast soon as well as a couple from albrite. Victor cna you help me with those numbers I need?

I want to drive 3 95W VHO lamps. They will all be actinic. Or a combination of VHO lamps It will be the same for all ballasts.

Let me know.

Victor.. or anybuddy else...
 

You could always ask Dana Riddle. There is a very real chance he's already done this work. I don't think Sanjay messed around with any types of florescents but you never know. It wouldn't hurt to ask him as well. Sanjay often shows up on #reefs .

Victor.. or anybuddy else...
 

true.. very true.. I jstu want to see some numbers.. and once I get somethign in my head I cna't get rid of it till I know the answer..

grrrr..

Victor.. or anybuddy else...
 

Go for it, Darren! As you probably know, I want to add another actinic and make them VHO (like yers) I would be interested in some info too! Let me know if I can help.

Bruce

Victor.. or anybuddy else...
 

Hello Guys,

Just a thought. I'm not sure what's the spectral ranges the typical light meters are good at. I've never heard of having to worry about this while working on film sets but at the same time, I don't think we ever use anything close to 10k or 20k Kelvin lights as well. So it'll be a good idea to make sure the light meter you use is good for the bulb.
The best thing is if we can do some sort of an FFT on the light data we collect. Um....
Titus

Victor.. or anybuddy else...
 

FFT on the light...speaking like a true DSP engineer [img]images/smiles/icon_smile.gif[/img]


- Victor.

Victor.. or anybuddy else...
 

Here's some numbers for an Icecap driving VHO and NOs (from http://sites.netscape.net/douglxyzzy/light.htm )

- Victor.

[ 06 December 2001: Message edited by: reefburnaby ]

Victor.. or anybuddy else...
 

hmm at the bulbs surface.. make me glad I tried that also.. the problem is a no daylight is going to be higher lux than a actinic no problem.. as the way the meter pick up the light.
I guess I am going to have to get a daylight bulb and do this again

Steve