Quote:
Originally Posted by Stonius
Is there a way for the home user to measure this and generate a sensitivity curve for their own eyes? I'd be curious to be able to test in a setting that is not dependent on other variables such as transparency, filters, etc...
It's kind of a good thing to know, same as knowing your maximum pupil dilation.
Has anyone done this?
Markus
|
Hi Markus,
I don't think this would be something easy to do at home. I may be wrong. It would be very easy to do in a laboratory that could emit light at various wavelengths and measure the response. Similar to doing a hearing test where they measure your ability to detect sound at a whole range of wavelengths and measure the lowest db level you are able to detect each of those frequencies.
I know its a real life thing because I have seen instances under very good conditions with large aperture, where a couple of observers have been able to observe the horsehead unfiltered very easily, yet a couple of other very experienced observers have not been able to detect it at all, due to their own eyes inability to detect the high red wavelengths emitted by IC434. However, on targets which emit at lower frequencies, they can go just as deep as the others.
Cheers
John B