Difference between revisions of "December 23, 2004"
(Created page with "__NOTOC__ =Double Rings= <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> <tr> <td width="50%"></td> </tr> </table> <table width="85%" bord...") |
|||
| Line 1: | Line 1: | ||
__NOTOC__ | __NOTOC__ | ||
=Double Rings= | =Double Rings= | ||
| − | |||
<table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
| − | + | <tr> | |
| − | + | <td width="50%"><h2><nobr>Double Rings </nobr></h2></td> | |
| − | + | </tr> | |
</table> | </table> | ||
<table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
| − | + | <tr><td colspan="2" valign="top"><div align="center"> | |
| − | + | <img src="archive/2004/12/images/LPOD-2004-12-23.jpeg" border="0"> | |
| − | + | </div></td> | |
| − | + | </tr> | |
</table> | </table> | ||
<table width="80%" border="0" align="center" cellpadding="8"> | <table width="80%" border="0" align="center" cellpadding="8"> | ||
| − | + | <tr><td><div align="center" class="main_sm">Image Credit: [mailto:digidodi@yahoo.com Dominique Dierick, aka Dodi]</p> | |
| − | + | </div></td> | |
| − | + | </tr> | |
| − | + | </table> | |
<br> | <br> | ||
<table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | <table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | ||
| − | + | <p align="center"><b>Double Rings </b></p> | |
| − | + | <p align="left">When I see a [http://www.lpod.org/archive/2004/01/LPOD-2004-01-22.htm halo] around the Moon I feel lucky at witnessing such a magical sight. And I usually explain to someone that its due to sunlight, bounced off the Moon and refracted thru ice crystals in the atmosphere to our eyes. But this wonderful picture is not of a halo, nor even two halos. A halo is a ring 44 degrees wide, but these rings are much smaller - the inner one is 2.5 degrees in diameter, and the outer is 5 degrees. Such small circles are called coronas, and the small size results from the light being diffracted by water droplets or small needles of ice. The color sequence from the inside out is blue, yellow, red. Multiple coronas occur when water drops of different size are present. The next time thin clouds obstruct your view of the lunar surface check to see if there is, no not a silver lining, but diffraction ring or corona. And also pay attention when thin clouds cloak Venus, Jupiter and Sirius, for small and faint coronas have been occasionally seen around them! </p> | |
| − | + | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | |
<p align="left"><p><b>Technical Details:</b><br> | <p align="left"><p><b>Technical Details:</b><br> | ||
Nikon 180mm and Nikon D70</p> | Nikon 180mm and Nikon D70</p> | ||
| Line 31: | Line 30: | ||
<p><hr><center> | <p><hr><center> | ||
<b><FONT COLOR="#FF0000">VOTE FOR YOUR FAVORITE LPODs!</FONT></b><br> | <b><FONT COLOR="#FF0000">VOTE FOR YOUR FAVORITE LPODs!</FONT></b><br> | ||
| − | During Dec 25 thru Dec 31 LPOD will feature LPODs from the past year that visitors like best. Send [mailto: | + | During Dec 25 thru Dec 31 LPOD will feature LPODs from the past year that visitors like best. Send [mailto:tychocrater@yahoo.com me] an email with your favorite seven LPODs - include their titles and the dates they appeared. Thanks! </center> |
| − | |||
| − | |||
</p> | </p> | ||
| − | + | </tr> | |
| − | |||
</table> | </table> | ||
<br> | <br> | ||
<table width="100%" border="0" cellspacing="2" cellpadding="4"> | <table width="100%" border="0" cellspacing="2" cellpadding="4"> | ||
| − | + | <tr> | |
| − | + | <td><hr></td> | |
| − | + | </tr> | |
| − | + | <tr><td> | |
| − | + | <p align="center" class="main_titles"><b>Author & Editor:</b><br> | |
| − | + | [mailto:tychocrater@yahoo.com Charles A. Wood]</p> | |
| − | + | <p align="center" class="main_titles"><b>Technical Consultant:</b><br> | |
| − | + | [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p> | |
| − | + | <p align="center" class="main_titles"><b>Contact Translator:</b><br> | |
| − | + | [mailto:pablolonnie@yahoo.com.mx" class="one Pablo Lonnie Pacheco Railey] (Es)<br> | |
| − | + | [mailto:chlegrand@free.fr" class="one Christian Legrand] (Fr)</p> | |
| − | + | <p align="center" class="main_titles"><b>[mailto:webuser@observingthesky.org Contact Webmaster]</b></p> | |
| − | + | <p align="center" class="main_titles"><b>A service of:</b><br> | |
| − | + | [http://www.observingthesky.org/" class="one ObservingTheSky.Org]</p> | |
| − | + | <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br> | |
| − | + | [http://antwrp.gsfc.nasa.gov/apod/astropix.html" class="one Astronomy] | [http://www.msss.com/" class="one Mars] | [http://epod.usra.edu/" class="one Earth]</p> | |
| − | + | </td></tr> | |
</table> | </table> | ||
| − | |||
<p> </p> | <p> </p> | ||
| − | |||
| − | |||
| − | |||
| − | |||
---- | ---- | ||
===COMMENTS?=== | ===COMMENTS?=== | ||
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | ||
Revision as of 18:28, 4 January 2015
Double Rings
<nobr>Double Rings </nobr> |
<img src="archive/2004/12/images/LPOD-2004-12-23.jpeg" border="0"> |
Image Credit: Dominique Dierick, aka Dodi
|
|
Double Rings When I see a halo around the Moon I feel lucky at witnessing such a magical sight. And I usually explain to someone that its due to sunlight, bounced off the Moon and refracted thru ice crystals in the atmosphere to our eyes. But this wonderful picture is not of a halo, nor even two halos. A halo is a ring 44 degrees wide, but these rings are much smaller - the inner one is 2.5 degrees in diameter, and the outer is 5 degrees. Such small circles are called coronas, and the small size results from the light being diffracted by water droplets or small needles of ice. The color sequence from the inside out is blue, yellow, red. Multiple coronas occur when water drops of different size are present. The next time thin clouds obstruct your view of the lunar surface check to see if there is, no not a silver lining, but diffraction ring or corona. And also pay attention when thin clouds cloak Venus, Jupiter and Sirius, for small and faint coronas have been occasionally seen around them! Technical Details: Related Links: Tomorrow's LPOD: Introducing PlanetWarp! VOTE FOR YOUR FAVORITE LPODs! |
|
Author & Editor: Technical Consultant: Contact Translator: A service of: Visit these other PODs: |
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
