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Thread: Spectra for CPs

  1. #1
    Moderator Cindy's Avatar
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    Spectra for CPs

    Hi everyone,

    Thanks to Butch, I'll probably be blind with neck and spine problems by 2016.

    It is his fault he introduced this link to me...but then again I guess I cannot really blame him for getting hooked and be willing to struggle with the DIY spectrometer that may not work best with a Android Samsung Note 4.

    So here are the links to what I have recorded so far (until I figure out how to embed the pics directly here). These are different sets of spectra that I put together for comparison just for the fun of it, although I may find some correlation later on between the lights I am using (sunlight, white leds and red/blue leds in different ratio).

    SpectralWorkbench

    http:///spectralworkbench.org/sets/embed2/2999

    http://spectralworkbench.org/sets/embed2/2997

    SpectralWorkbench

    There is a clear plastic cover on the T5 HO light set which I thought may affect the recording...1313 is with the cover.
    http://spectralworkbench.org/sets/embed2/2995
    Cindy

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    Lotsa blue bluemax's Avatar
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    Cool stuff, Cindy! I was interested to see that natural sunlight contains more yellow-orange than red light. Not being one who thinks in terms of nanometers I found the chart on this page to be useful:Laser wavelength charts - Lexel Laser

    The white LEDs you used actually seem to be pretty decent in terms of red and blue light, naturally containing lots of green to make things look natural.
    - Mark

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    Nice! When I played with it, it was pretty tough to get a nice narrow slit (to get good resolution). I then made it with a Cheerio box, and it worked better. I think that it was because the distance between the slit and the DVD becomes longer.

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    Av8tor1's Avatar
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    Very nice work Cindy!

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    Av8tor1's Avatar
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    Dusted mine off and took some measurements.
    This is the from the LED my "pink" Cephalotus is growing under

    Due to over saturation issues, I captured the spectra after being reflected off of white paper

    but anyways, I used embed command in Spectral Workbench, then copy and pasted the code into Terraforums

    hth's
    Butch
    Last edited by Av8tor1; 12-31-2015 at 09:28 PM. Reason: changed images

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    nimbulan's Avatar
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    That's interesting, I wouldn't expect such a large spike in a green wavelength, nor one down near ultraviolet. I've only really looked at spectrographs for LEDs though.

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    Moderator Cindy's Avatar
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    Here are my latest sets after Butch helped me with the calibration of the T5 HO and CFL.

    Set 1
    SpectralWorkbench - Set 3044

    The white LEDs (Panel and Tank HL) are currently used for Nepenthes, VFT, Drosera, Heliamphora, Cephalotus, Byblis and Utrics. So far, all the plants are doing well with these lights.

    Set 2
    SpectralWorkbench - Set 3042

    Soon, the various genera of CPs wiil be placed under the following combinations of red/blue LEDs to see how they response.
    6R1B
    2B5R
    6B1R
    Last edited by Cindy; 04-06-2016 at 08:53 PM.
    Cindy

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    Av8tor1's Avatar
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    Cindy,

    Curious, are the panel and tank made by the same company?
    Their spectra is very similar
    Last edited by Av8tor1; 01-08-2016 at 06:16 AM.

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