|
Junn Chavez
member
Reged: 02/24/09
Posts: 29
Loc: Sands of Arabia
|
|
Occasionally, when I view lunar craters they seem to appear "embossed" or convex. If I look away and go back to the view, the craters return to their normal appearance.
Is it an optical illusion? or something's wrong with my eye 
|
vennard
member
Reged: 12/29/08
Posts: 47
Loc: Montana
|
|
Your brain decides to understand from a different perspective. You can do this on purpose if you want. Like looking at the black and white vase or face profiles...
mike
|
dan777
member
Reged: 11/16/07
Posts: 79
Loc: Michigan
|
|
Junn, I had never experienced this phenomenon UNTIL someone here on CN made the same inquiry that you did. Wouldn't you know it, the next time I was doing some lunar observing I had the same experience. My wife has more of an issue with this than I do.
Dan
--------------------
Orion XT8i
Tasco 60 mm refractor
Nikon 8x21 binoculars
|
starrancher
professor emeritus
Reged: 06/09/09
Posts: 574
Loc: Northern Arizona
|
|
Quote:
Occasionally, when I view lunar craters they seem to appear "embossed" or convex. If I look away and go back to the view, the craters return to their normal appearance.
Is it an optical illusion? or something's wrong with my eye
I've seen the same thing . It's in the brain . I've also done this with M31 . I.E. Which is the far side & wich is the near side of the galaxy & what is the top & what is the bottom ?
--------------------
LXD75 AR5
LXD75 SN8
Series 4000 Plossls
Misc. other stuff
Fort Rock , Az .
|
star drop
Guilty as Charged
Reged: 02/02/08
Posts: 16172
Loc: Snow Plop, WNY
|
|
One of our textured ceilings gives me a similar illusion. My brain interprets the ceiling shadows from an oblique light source in two different ways.
Another illusion I encounter happens every time I view Tycho's ray system. To me the rays look like they are gouges in the lunar surface.
--------------------
Ted
|
ColoHank
professor emeritus
Reged: 06/07/07
Posts: 507
Loc: western Colorado
|
|
I've noticed this phenomenon while looking at some aerial photos. Apparently, and for reasons I don't understand, the mind may be somehow conditioned to expect that the terrain should be illuminated from a source to the upper left. When the light source lies in some other direction, objects in relief may appear inverted. With aerial photos, the remedy is easy; just rotate the photo top to bottom until things look right. Good luck trying that with the Moon.
--------------------
---------------------
Questar 3.5 standard - pyrex and BB coatings
Powerguide II
8mm, 12mm, 16mm, 24mm and 32mm Brandons
modified Bogen 3030 w/ homebuilt wedge
Homebuilt Galileo scope and very large and ugly homemade tripod
other odds and ends, including iPod Touch with StarMap Pro (what a marvelous combo)...
---------------------
"Nothing exists but atoms and empty space. Everything else is opinion."
Titus Lucretius Carus 99-55 B.C.
|
|
1 registered and 2 anonymous users are browsing this forum.
Moderator: desertstars
Print Thread
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Thread views: 186
|
|
|
|
|
|
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
[Re: 