Monday, March 21, 2011

Cerco lens does Perigee Moon UV-VIS-IR

Well on March 19th, the moon was at its Perigee, closest to earth until 2029 and very bright, so I took a few shots using that CERCO 94mm lens here on my BLOG .

[click on image to see a larger one]

UV image:


VIS image:


IR image:


And after some multispectral processing using the images of above, one gets that "false color" image:


NASA and other agencies are using these types of false color images to display results of their satellite imaging.

Some better processing even gives it a more 3D appearance:


Here now a simulation, how an UV-Moon would look like as seen from Earth (Weinheim Castle "Windeck"):


Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos

Friday, March 11, 2011

CERCO f4.1/94mm VIS lens test

Well, I recently bought that lens made by SODERN in France (type 2085) and had reported about it here on my BLOG . It is no longer available on stock (but on special order from 10 onwards) and has been superseded by the faster 2.8/100mm type 2178. Manufacturer site is linked here.

Now a few images of some early flowers taken a few days ago on a cold, but very sunny spring day.

[click on image to see a larger one]

















Images are straight from the UV sensitive camera, uncropped. I have used a very deep sunshade and also only stopped down to about f5.6 because of that previously mentioned hotspot when stopping down too much. So under controlled lighting conditions, that lens is a decent performer and shows no hotspot issues for closeup work and also for infinity. Quite nice I have to say.

More testing has to be done of course...


Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos