Custom auxiliary lens for CAT S60

[Vipitis]

here are some pictures of the printed model.

in the background you can see some parts that I printed out but don't work.

I will try to take this lens out in the following days, as it is winter, it should be nice to take some pictures of people.

[Fraser]

Good work 

[Vipitis]

I went around with it again, but I got trouble now. There seem to be vignetting at the top and some kind of leak at the bottom. The images are rotated so that corresponds to bottom and top of my design.

The easiest problem would be the rear element being to far and the tubes themselves blocking part of the image. 

Focussing with 10 rotations is difficult as well, the precision isn't needed and closeup is not so possible as the fov is really narrow already.

Attached are some images through the lens. You can see parts of my printer and some other things around the house.

[grythumn]

Note the absence of a thermal image of the moon. I wonder why

There was a LWIR camera on Clementine. Tiles are available on PDS, but I can't find a LWIR mosaic in a few minutes of googling. NIR, LIDAR, UVVIS, yes. There was also a radiometer on LRO.

LRO mosaic data:
ftp://public.sos.noaa.gov/astronomy/lro/diviner/

Mosaic'd image example (can't inline, ftp)
ftp://public.sos.noaa.gov/astronomy/lro/diviner/frames/tbol_global-23_lroc.jpg
ftp://public.sos.noaa.gov/astronomy/lro/diviner/scalebar.png

Clementine (lot of hot pixels and what look like compression artifacts)
https://pds-imaging.jpl.nasa.gov/search/?fq=ATLAS_MISSION_NAME%3Aclementine&fq=ATLAS_INSTRUMENT_NAME%3Alwir&q=*%3A*

-R C

[Fraser]

Hi,

Nice finds, but I should have said.... thermal imaging of the moon from the earths surface.

Fraser

[Vipitis]

http://www.montana.edu/jshaw/documents/IR%20moon%20imaging%20smoke%20layers%20-%20Shaw%20et%20al%20-%20AO%202015.pdf

If you can find he researchers of this paper, they have used the same setup to monitor other atmospheric phenomena as well. Not directly trying to image the moon, but did so I the process.

Using LWIR cameras

[IwuzBornanerd]

I noticed in that paper when you posted it before that even with all that big fancy apparatus they still only got 100 pixels across the moon.  Heck, I get 75-80 pixels with my little F/5.6 100mm ZnSe lens.  Ha, ha, ha...  BUT of course I CAN'T read the temperature of the cold space around it or much detail in temperature differences across the surface of the moon.  But for what I paid it's kind of cool.

I took some shots of the full moon last week and I think they would have been more interesting if the sky had been truly clear.  There was thin cloud cover as well as the ongoing haze.  I should have taken a visible shot to show the glow around the moon from the haze & cloud.

The first image below makes it look like the moon is melting & dripping. :~)  The last image is with one of the more common smooth palettes that everyone else uses.  It's easier to see "one bit" deltas with my palettes.  I should have gotten a couple with the smoothing off too...hopefully another time.

The temperatures, of course, are wrong due to the extra tight aperture of that lens.  What I don't understand is why the calculated temperatures don't end up far colder since the "radiance" hitting the sensor is so much lower than with the stock F/1.4 lens.  It must have something to do with how I determine the temperature but I have not figured it out yet & need to run some more tests.