Visit the Cellar!

The Cellar Image of the Day is just a section of a larger web community: bright folks talking about everything. The Cellar is the original coffeeshop with no coffee and no shop. Founded in 1990, The Cellar is one of the oldest communities on the net. Join us at the table if you like!

 
What's IotD?

The interesting, amazing, or mind-boggling images of our days.

IotD Stuff

ARCHIVES - over 13 years of IotD!
About IotD
RSS2
XML

Permalink Latest Image

Mar 24th, 2017: Propaganda Posters

Recent Images

Mar 23rd, 2017: Bubbles
Mar 22nd, 2017: Reindeer Can Fly
Mar 21st, 2017: The Meeting
Mar 20th, 2017: Hellé Nice
Mar 19th, 2017: Rabbit Hole
Mar 18th, 2017: Evidence
Mar 17th, 2017: Leslie Spit Brick Beach

The CELLAR Tip Mug
Some folks who have noticed IotD

Neatorama
Worth1000
Mental Floss
Boing Boing
Switched
W3streams
GruntDoc's Blog
No Quarters
Making Light
darrenbarefoot.com
GromBlog
b3ta
Church of the Whale Penis
UniqueDaily.com
Sailor Coruscant
Projectionist

Link to us and we will try to find you after many months!

Common image haunts

Astro Pic of the Day
Earth Sci Pic of the Day
We Make Money Not Art
Spluch
ochevidec.net
Strange New Products
Geisha Asobi Blog
Cute animals blog (in Russian)
20minutos.es
Yahoo Most Emailed

Please avoid copyrighted images (or get permission) when posting!

Advertising

Philadelphia Pawn Shop
The best real estate agent in Montgomery County
The best T.38 Fax provider
Epps Beverages and Beer, Limerick, PA
Sal's Pizza, Elkins Park
Burholme Auto Body, Philadelphia
Coles Tobacco, Pottstown
ERM Auto Service, Glenside
Glenside Collision
Moorehead Catering, Trappe
Salon 153, Bala
Dominicks Auto Body, Phoenixville

   xoxoxoBruce  Monday Jul 12 12:02 AM

July 12, 2010: Anamorphic Art

I'm no artist. Oh, I can sketch a fair representation of a mechanical linkage or something simple. But making a drawing/sketch of something like a still life, or a person, you wouldn't know what I was trying to illustrate when I was done.

Making these sketches, so distorted they are almost undecipherable, until you drop a cylindrical mirror in the right spot, just boggles my mind.



link



Gravdigr  Monday Jul 12 04:56 AM

Well, that's fairly awesome.



Griff  Monday Jul 12 07:49 AM

Gonna have to show this to lil' Pete...



glatt  Monday Jul 12 08:26 AM

In the link, my favorite images are the ones that are camouflaged to look like they are paintings of something else, and then you put the mirror in place and suddenly see a portrait.

Like this one.



classicman  Monday Jul 12 08:46 AM

Just sent that link to a few friends - that is really amazing. I have zero artistic ability. I can appreciate it, but creating it is beyond me.
That is simply awesome.



casimendocina  Friday Jul 16 08:51 AM

Incredible.



Lamplighter  Tuesday Nov 3 03:35 PM

OK, if you start with this:



.

... and you get a little closer to understanding the "Adaptive Optics" technologies
that are coming to maturity in astronomy, particularly at the Keck Observatory in Arizona...

Here is distorted infrared light coming from Uranus (left) improved via "AO" (right)
For Sharpest Views, Scope The Sky With Quick-Change Mirrors
NPR - June 24, 2013

Attachment 54032

.

... and that lets you see the super-massive black hole at the center of the Milky Way galaxy.

Attachment 54033


.

Actuallly, the technical development was the reverse, starting with the US military wanting
to actually "really see" Russian satellites in case they were carrying weapons.
The AO technology was declassified so astronomers could take advantage of it.


.



Gravdigr  Tuesday Nov 3 05:09 PM

There's light coming outta my anus?!?!?



No wonder it's distorted.



xoxoxoBruce  Tuesday Nov 3 09:05 PM

How do they know they've rearrange it right, and not well we have this, and want that, so build a system to make this that?



Lamplighter  Tuesday Nov 3 09:50 PM

Maybe you have seen pics of a lazer beam aimed into the sky at the Keck Observatory.

Attachment 54038

The article describes that beam as activating the sodium atoms that are at the bottom of the trophosphere.

By measuring the distortion of that lazer beam, a correction factor is calculated and
applied to the flexible secondary mirrors in the telescope that are collecting the light image from the target star(s).

I can't say I really understand all that, but that seems to be the gist of it.

.



xoxoxoBruce  Tuesday Nov 3 10:23 PM

That seems like a viable way to measure the distortion of any spectrum coming through our atmosphere. But it's a long way from the source of most of the things their looking at, to our thin candy shell. I guess they know enough about the properties of the whole spectrum, including how they travel, so correcting for our atmosphere they can determine if anything else along the path is affecting it.



Lamplighter  Wednesday Nov 4 12:01 AM

Exactly so, xoB.
Once our atmospheric distortions are resolved by adaptive optics systems,
other distortions would require explanation and/or involve further research.

Even the governmental funding of the Keck Observatory's installation of
Next Generation of Adaptive Optics (NGAO) equipment was justified, in part,
on the detection and precise measurements of dark matter affecting light
passing by or through gravitationally lensed galaxies.
(This was only one of a number of top priority studies - described here)

,



Your reply here?

The Cellar Image of the Day is just a section of a larger web community: a bunch of interesting folks talking about everything. Add your two cents to IotD by joining the Cellar.