Originally posted by Freezer
I wonder if its enough to capture the UFO's which are said to be visible in the UV spectrum?
I'm guessing that UFO's would be bright in the UV spectrum, so a little sensitivity should/might be enough.
- thanks for sharing, and yes I agree that web cams are probably best left just for playing around with. I had a look and found
some bullet cams. How does 550 lines sound?
.001 LUX sounds pretty good, but I have yet to see any LUX ratings where I've been looking.. I'll have to look a bit harder. High sensitivity is
usually a good thing to have
There was mention of using a "ARCHOS personal DVR recorder" for recording on this
page, which sounds like a good solution, but I'll look into getting a second hand camcorder too.
I'm not sure if I'll go through with this, but there's no harm in exploring the possibility.. perhaps I'll treat myself if my new business venture
takes off.. more lightly, I'll wait till one of my DSLRs is no longer needed and have a look if I can mod that instead.
- thanks for the input. Perhaps we could put together a list of CCD devises that are easy to mod, and those that are not, providing
theres enough interest (I think there is, but let's see if any others are willing to sacrifice an old camera in the name of science, or if there are
others who already have).
A "1-5" rating system could tell people how easy a camera was to mod, and also its suitability for use as camera for trying to capture UFOs. Some
may turn out to be more suitable than others, and with resolutions going up all the time.. I'm sure some good solutions can be found, given time.
I'm glad you brought up the subject of lenses.. what, may I ask, is the problem with it?
I had a sneaky suspicion lenses could be a problem in some cases. My understanding is that, providing the lens actually lets through the frequency of
light you want (some won't, especially at the UV end I'm guessing), and your filter only lets a narrow band spectrum of light through, you should be
ok. Problems arise if you have a filter that lets more than one frequency through, in the form of chromatic aberrations, which I suppose would just
look like loss of detail/blurring of the image.
- I think you'll find that conventional photography filters, like the 18A remove the UV spectrum and let the visible light through
rather than the other way around.
You are right though, getting a good UV lens could be a real problem - as far as I can tell, all the UV-Nikkors lack the ability to focus @ infinity.
The 160 mm f/5.6 FAX-Nikkor might be able to, but I'm not sure..