testing spectrum

[foxhuntr]

can anybody a good way of testing spectrum of Led's ????? is there a meter i can use ????

 

[Onedesign1]

not a good way that is inexpensive. Google colorimeter and spectrometer....and then there's these guys but I don't know anything about it but it can't be cheap

 

[ReefLEDLights]

We had to send ours checked by the University of Heidelberg in Germany for one of their research projects.

Here are their results.

XML High Noon

XP-E Premium Royal Blue

XPG Premium Cool White

 

[CJO]

It's hard to tell for certain, but the seneye monitor with the light meter upgrade appears to do this:
seneye light upgrade

CJ

 

[Onedesign1]

It's hard to tell for certain, but the seneye monitor with the light meter upgrade appears to do this:
seneye light upgrade

CJ

Oh you just had to find that now didn't you....another toy I'm going to have to buy! Nice find

 

[foxhuntr]

what is this seneye ???? i heard others talking about it .....can it be used like the apogee par meter ??? is it water proof ??

 

[reefkoi]

The Evolution factory has their own testing equipment and software, its very expensive and not something the end user can test for unfortunately because of cost.

 

[Onedesign1]

what is this seneye ???? i heard others talking about it .....can it be used like the apogee par meter ??? is it water proof ??

click on the link fox...its a probe that sits in your tank and connect to either a wireless router or a dedicated PC via USB....and takes a number of different readings including PAR, Kelvin temp, Lux, temp, PH, No3....sounds too good to be true...mainly because its inexpensive and everything else I've researched you are talking starting at $800 for a handheld point and shoot gun

 

[CJO]

Here are some other options that won't give you a curve, but will give you an indication of the spectrum covered by your lights:
Feature Article: Poor Man's Spectrometer: Estimating Lamp Spectral Quality for Less Than $30 — Advanced Aquarist | Aquarist Magazine and Blog

I have the Project STAR one, but have never actually gotten around to trying it out!

CJ

 

[Onedesign1]

Here are some other options that won't give you a curve, but will give you an indication of the spectrum covered by your lights:
Feature Article: Poor Man's Spectrometer: Estimating Lamp Spectral Quality for Less Than $30 — Advanced Aquarist | Aquarist Magazine and Blog

I have the Project STAR one, but have never actually gotten around to trying it out!

CJ

thats a neat device. I think I'd also like to determine Kelvin as well because my use of LEDs

 

[mcarroll]

Ressurrecting an old thread....

Anyone ever try one of the Public Labs spectroscopes (needs to be calibrated in a real lab apparently?) or one of the handheld analog scopes like the one I use? I definitely recommend at least the handheld!

CJO?

I don't have an adequate camera to get good, accurate photos from it (need to remove/disable the >650nm IR filter and color-correction at minimum) but I did post these photos a while back - around the time of this thread, actually - to give people the idea of what you can see with it. I did a B&W conversion of each one to (hopefully) show relative wavelength intensity a little better.

A warm-white GU10 LED bulb:

A nicer-than-average-looking warm-white CFL bulb:
https://www.reef2reef.com/forums/attachment.php?attachmentid=104304&d=1384194241