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Infra red cameras
From: Chris.Rennie at blueyonder.co.uk (Chris) on 2008.05.25 at 13:55:14(17619)|
Hi Gary, Steve.
My suspicion's raised when the spadix takes ~8 hours or so to move into
a position (which appears to be the focal point of the spathe) and
*only* then heats up.
The interior of the spathe is also coloured white, better to reflect
than the green outside of it?
The thermal imaging camera I'm now thinking of hiring produces real time
images. So it should be easy to move around and see whether the spathe
appears brilliantly illuminated from the front.
I also want to do another timelapse, but in infra red. I want to see
what the whole things looks like as it lights up.
Thanks very much for the link. That hack certainly looks interesting.
The way I'm now thinking is that I should 'bite the bullet' be done with
it and hire a thermal imaging system for three days.
Assuming, my other avenues of enquiry prove fruitless. Best quote I've
got so far is ?250 which isn't too awful (relatively speaking)
Couple of questions:
Is it possible that there may be other pollinator insects for this plant?|
Are there any methods of predicting the flower is going to open the day
before it does? (hire company needs advance notice of a day)
Steve, I remember you saying it slightly opens up beforehand, but are
there any other indicators I could look for as well?
(it would be a real pain to hire the camera and then nothing happens!)
> I know of no inexpensive way to do this so your suggestion is
> certainly valid. As for the parabolic reflector, I find that
> extremely interesting. I'm now certain infrared plays some role. It
> is simply up to the scientists to verify what that role may be since
> the actual insects involved will need to be tested. I had only
> considered the possiblity the insect could "see" the spadix but the
> idea of their seeing the entire spathe is even more interesting.
> ----- Original Message -----
> *From:* Gary
> *To:* Chris.Rennie at blueyonder.co.uk
> ; Steve Lucas
> *Sent:* Sunday, May 25, 2008 2:51 PM
> *Subject:* Infra red cameras
> Hi Chris and Steve,
> Below is a link to a simple method of hacking an inexpensive video
> camera (or a still camera) that would allow at least a cursory
> record of the Aroid's heat emission. Steve, as a professional
> photographer can correct me if this would not work or a better
> method at a reasonable price would be better.
> I think that Chris has hit upon something with his observation
> that the spathe acts as a parabolic reflector. If, in fact, the
> hacked camera would work, I can think of some test setups that
> would be illuminating as well.
> I liked this one because of the chart of brand name cameras he
> lists and the procedure to hack them. The author is in
> Nottingham. There is also a link at the bottom of the page to
> macro photography with a cheap hacked camera that is worth looking
> Also try: Goggling: hack a video camera to infrared
> Good luck and I hope this proves to be helpful.
> Gary Meltzer in Hilo, Hawaii
> doji at hawaii.rr.com
From: gibernau at cict.fr (Marc Gibernau) on 2008.05.26 at 02:50:29(17625)|
I agree with many of you about the fact that the spathe interior wall is
clear, whitish. I'm almost sure that this clear color contrast with the
dark environment and as you may be on the figure posted in my last e-mail
some reflection occurs (the zone around the constriction) is clear blue
(about 2?C degrees ) of the rest of the spathe certainly increasing the
bright/clear aspect of the interior spathe wall both in normal and IR light.
But the spathe being not thermogenic its attractive effect may be minimal
comparing to the bright spadix (in IR wavelenghts).
All the best,
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