Dark Water 1000nm with converted Sigma fp.

Started 3 months ago | Discussions thread
xpatUSA
xpatUSA Forum Pro • Posts: 19,560
Re: Dark Water 1000nm with converted Sigma fp.
1

SigmaTog wrote:

D Cox wrote:

Maybe you could photograph CO2.

A container full of dry air, and the same after you drop a lighted match or a small candle in before closing the lid.

Don Cox

I tried this out Don, but I didn't get anything exciting.
Perhaps it is a very narrow band, or I need some more details ?

Col

Have a look at this, Col:

Note: 1 micron = 1000nm

CO2 appears to be only absorbant at much higher wavelength than your 1000nm filter.

Not sure what Don was expecting ...

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