Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Astronomy Picture of the Day -- Multicolor Venus
NASA ^ | March 01, 2012 | (see photo credit)

Posted on 02/29/2012 9:13:06 PM PST by SunkenCiv

Explanation: Brilliant Venus now shines in western skies at twilight. Seen as the prominent evening star, the planet is a tantalizing celestial beacon even for casual skygazers. Venus can offer less than satisfying telescopic views though. The planet is shrouded in reflective clouds that appear bright but featureless at the eyepiece. Still, careful imaging with a series of color filters, as used in these composite images, can reveal subtle cloud patterns. Captured early last month from a backyard observatory in Manchester, New Hampshire, USA, the images are based on video camera frames. The data was recorded through near-ultraviolet, green, and near-infrared filters (left), and red, green, and blue filters while Venus stood high above the western horizon just before sunset. This season's evening apparition of Venus is the best one for northern hemisphere observers in 7 years. It will ultimately end with a solar transit of the planet, the last one to occur in your lifetime, on June 5/6.

March 01, 2012

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; science; venus
[Credit & Copyright: Sean Walker (SkyandTelescope.com, MASIL Astro-Imaging)]

1 posted on 02/29/2012 9:13:10 PM PST by SunkenCiv
[ Post Reply | Private Reply | View Replies]

To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...

2 posted on 02/29/2012 9:14:06 PM PST by SunkenCiv (FReep this FReepathon!)
[ Post Reply | Private Reply | View Replies]

To: SunkenCiv

If you can observe Venus setting on a clear horizon, using a medium magnification telescope, you will see it display itself as a psychedelic candle flame. This is a unique experience to be had only at the eyepiece, AFAIK, although I suppose it would be possible to capture some intimation of it with sophisticated video equipment. So far though, I’ve never seen any video of this nature.


3 posted on 02/29/2012 10:02:11 PM PST by dr_lew
[ Post Reply | Private Reply | To 1 | View Replies]

To: dr_lew

It’s mostly because of persistence of vision, and infrared, visible and ultraviolet light over-saturating your retina.


4 posted on 03/01/2012 2:12:33 AM PST by James C. Bennett (An Australian.)
[ Post Reply | Private Reply | To 3 | View Replies]

To: James C. Bennett; dr_lew

Don’t listen to him dr_lew.

It is because of magic.


5 posted on 03/01/2012 5:24:20 PM PST by bigheadfred
[ Post Reply | Private Reply | To 4 | View Replies]

To: bigheadfred

LOL!


6 posted on 03/01/2012 5:46:23 PM PST by James C. Bennett (An Australian.)
[ Post Reply | Private Reply | To 5 | View Replies]

To: bigheadfred

It’s atmospheric refraction. The resemblance to a flame is not accidental, but due to the physics of turbulent thermal convection.

If it’s not magic, it’s certainly a magical experience.


7 posted on 03/01/2012 6:16:23 PM PST by dr_lew
[ Post Reply | Private Reply | To 5 | View Replies]

To: dr_lew; James C. Bennett
NOOOOOO!!!!

IT IS MAGIC!!!!

Now ya got me all worked up!

8 posted on 03/01/2012 7:11:20 PM PST by bigheadfred (teehee)
[ Post Reply | Private Reply | To 7 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson