Spectral lightmeter Gigahertz-Optik MSC15

[JorgeGonzales]

Malocan. If you could by chance do a simple test with only a few metering points
Of any difference from a fully reflective area vs anything less.

Fully reflective as in white or silver floor ceiling and walls vs the normal non reflective floor and ceiling. Facing the meter up of course. Just interested to know actual numbers benefit of a high reflection ceiling and floor and walls.

By eye fully reflective ceiling and floors seems super bright. But knowing plants light receptors are only on the top of the leaves I wonder if there's much benefit.

Leaves act as diffusers. There is definitely a point. Any light not being reflected is converted to heat, and that's a real shame. Actually any light being reflected is also converted to heat, just not as much.

 

[BM9AGS]

Leaves act as diffusers. There is definitely a point. Any light not being reflected is converted to heat, and that's a real shame. Actually any light being reflected is also converted to heat, just not as much.

Hmm. Interesting.

 

[nevergoodenuf]

If you put a leaf over/above the sensor, what does the reading look like.

 

[JorgeGonzales]

If you put a leaf over/above the sensor, what does the reading look like.

Actually, that's something I want to see. Sensor on the floor, under the canopy. Or outside, under a plant. Or under a leaf.

 

[Malocan]

If you put a leaf over/above the sensor, what does the reading look like.

Hello,
Yes i will do that test, but i have to say that leaf will be not from weed plant. just from a normal plant with a bit bigger green leaf.
Atm i dont have any weed plants:/

 

[weed-whacker]

Hello,
Yes i will do that test, but i have to say that leaf will be not from weed plant. just from a normal plant with a bit bigger green leaf.
Atm i dont have any weed plants:/

dont matter

this is a fantastic test that has been highly debated so so so much


please do this with the same cobs you already tested so we can see the dif and know what makes it through
1 leaf
2 leaves

3 leaves?




virtual hugs my brother!

 

[Malocan]

I'd love to see a test with no reflectors too.

should i remove the reflector adapter too? if i remeber right, the reflector adapter act like a reflector.

 

[JorgeGonzales]

should i remove the reflector adapter too? if i remeber right, robincnn told us that the reflector adapter act like a reflector.

That sounds like too much work. Did you go with Ideal or BJB? Only the BJB focus the light a little. I'm just curious what the footprint looks like without them at all from 24 inches. Maybe they are unnecessary? I have the same reflectors.

Are you typing in that footprint data manually? Or is that something your amazing miracle machine stores for you? I had to do some copy and pasting and searching and replacing to get it into excel.

 

[Malocan]

Did you go with Ideal or BJB

ideal

Are you typing in that footprint data manually?

yes

I'm just curious what the footprint looks like without them at all from 24 inches.

i will beginn in 1hour

 

[weed-whacker]

ideal

yes

i will beginn in 1hour

oh ill have to stay up for this

 

[guod]

If you put a leaf over/above the sensor, what does the reading look like.

less blue and red, all sucked up by chlorophyll a and b
minimal change in far Red. leaves are transparent for this wavelength
also less green but this depends on the number of leafs between the light-source and the sensor

 

[JorgeGonzales]

less blue and red, all sucked up by chlorophyll a and b
minimal change in far Red. leaves are transparent for this wavelength
also less green but this depends on the number of leafs between the light-source and the sensor

That's what charts I saw looked like online. Here: http://www.edaphic.com.au/knowledge-base/articles/light-articles/spectrometers-reveal-how-plants-detect-their-neighbours/

But I'd still like to see it done personally, because @Malocan has an awesome new toy to play with. I'm sincerely jealous.

 

[Malocan]

Here the footprint without reflector.
Leaf test coming soon, need to smoke first

 

[BM9AGS]

Wow those are great numbers for 18"(60cm) no lens

 

[JorgeGonzales]

Just to match charts, here is the original footprint with title and same color scheme.

And I hate to say it, but...does the non-reflector version look better?

 

[JorgeGonzales]

Actually, an average PPFD should provide some clarity...I get 629 PPFD average for reflector test.

 

[Malocan]

i wonder if a reflector is even necessary at a 30cm distance, i think better without.
But i will do tests with reflector and without, but tomorrow.

Actually, an average PPFD should provide some clarity.

yeah thats the way, how we should compare, i think

 

[Malocan]

If you put a leaf over/above the sensor, what does the reading look like.

 

[Zulunature]

@Malocan Just want to give out a shout to you for doing this and sharing it with us in the community.

Fantastic and very interesting charts showing reflector v non reflector...

Looking forward to more data from you at various heights and amps, this information is really helpful to those of us without PAR meters.

 

[Malocan]

Next footprint is ready. Again same watt, without reflectors and distance is around 31cm