[Leica] Snow under the scope

[Don Dory]

You just need to keep a little dry ice around for the winter snow...

On Mon, Dec 5, 2022 at 10:13 AM Aram Langhans via LUG <lug at leica-users.org>
wrote:

> Thanks Don and Ric.  Snowed again last night but I slept through it.  I
> have a few other ideas on a background.  Read somewhere the best flakes
> are between 20 and -15F.  Still kind of warm at 28 this AM.
>
> Aram
>
> On 12/4/2022 4:34 PM, Don Dory wrote:
> > Really nice graphics.
> >
> > On Sun, Dec 4, 2022, 3:41 PM Aram Langhans via LUG <lug at leica-users.org>
> > wrote:
> >
> >> Well, finally some snow that looked good enough to try.  Nice looking
> >> flakes, but it is not much below freezing, so hard to keep then intact
> >> to put them under the microscope.  They survive OK, but the light from
> >> the scope takes its toll.  It is an overhead LED, but light is still
> >> light, and black is still black and absorbs light and heats up.  With
> >> only 2 degrees F leeway, it is not enough.  Will have to hope for more
> >> snow when it gets colder. Here are are a few first attempts.  I had to
> >> change background materials as the one I bought was too fibery and you
> >> could hardly see the flakes for the fibers.  These are just black matte
> >> board, all I could find that was handy.
> >>
> >> This one is not too bad as it was setting a bit above the surface of the
> >> board, so not too distracting.
> >>
> >> _DSC2588 (leica-users.org)
> >> <http://gallery.leica-users.org/v/Aram/w22_001/s/_DSC2588.jpg.html>
> >>
> >> This one shows the board texture and you can see where the flake is
> >> melting already.
> >>
> >> _DSC2598-Edit (leica-users.org)
> >> <http://gallery.leica-users.org/v/Aram/w22_001/s/_DSC2598-Edit.jpg.html
> >
> >>
> >> And this one had melted almost flat on the board so no real separation.
> >> The texture of the board is very evident, but still way better than the
> >> felt I had originally thought to use.
> >>
> >> _DSC2590-Edit (leica-users.org)
> >> <http://gallery.leica-users.org/v/Aram/w22_001/s/_DSC2590-Edit.jpg.html
> >
> >>
> >> I am thinking I will take some microscope slides, freeze them, then put
> >> them on the matte board.  They should hold the flakes far enough away
> >> from the board surface that the texture might not show up.
> >>
> >> These are all stacked images of 3-5 images for DOF.
> >>
> >> Comments and suggestions welcome.
> >>
> >> Aram
> >>
> >> --
> >> Aram Langhans
> >> (Semi) Retired Science Teacher
> >> & Unemployed photographer
> >>
> >> “The Human Genome Project has proved Darwin more right than Darwin
> himself
> >> would ever have dared dream.”   James D. Watson
> >>
> >>
> >> _______________________________________________
> >> Leica Users Group.
> >> See http://leica-users.org/mailman/listinfo/lug for more information
>
> --
> Aram Langhans
> (Semi) Retired Science Teacher
> & Unemployed photographer
>
> “The Human Genome Project has proved Darwin more right than Darwin himself
> would ever have dared dream.”   James D. Watson
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information



-- 
Don
don.dory at gmail.com