| Subject: Re: new Groom Lake hangar |
| From: miso@sushi.com |
| Date: 15/11/2007, 19:28 |
| Newsgroups: alt.conspiracy.area51 |
On Nov 15, 5:12 am, "Dave Bethke" <m...@work.org> wrote:
"røBstëR" <thedeerhunter...@gmail.com> wrote
I'm still not convinced about the asymmetry of the structure - the
more I look, the more symmetrical the building looks.
That was my thought, until miso posted the better photo this morning. Now I
see the asymmetry. As Lumpy noted, the NE side is extended as though
there's room for offices/shops/etc.
Just for yucks or more images of the same thing, here are all the
"color corrected" images of the hangar with info on the filtering
scheme used.
kr1.5 and a 450nm lowpass:
www.lazygranch.com/images/a51pan/november2007/kr1p5_450.jpg
kr1.5 and a 420nm lowpass
www.lazygranch.com/images/a51pan/november2007/kr1p5_420.jpg
kr1.5
www.lazygranch.com/images/a51pan/november2007/kr1p5.jpg
no filter
www.lazygranch.com/images/a51pan/november2007/nofilt.jpg
The images without the lowpass filters are not as sharp as the rest.
This is probably due to the difficulty in focusing without these
filters present. I don't believe the filters sharpen the image.
I suppose I should go back and document the histograms versus
filtering. Some filtering is required because the blue channel is
about two stops brighter than the red and green channels due to the
amount of atmosphere between the lens and target. You simply run out
of dynamic range of the image sensor, in this case slide film. The
kr1.5 is enough to get R, G & B close enough that dynamic range isn't
an issue, bui blue still dominates. Most of the time, I just shoot
with the 420nm longpass filter and the kr1.5. Because of the severe
haze, I also shot with the 450nm longpass filter instead of the 420nm.
Pretty much 450nm is as far as you can go and even pretend to get a
color image.
