In the clouds of Rho Ophiuchi - a photo on Flickriver

[description borrowed from apod.nasa.gov/apod/ap070903.html]
The many spectacular colours of the Rho Ophiuchi (oh'-fee-yu-kee) clouds highlight the many processes that occur there. The blue regions shine primarily by reflected light. Blue light from the star Rho Ophiuchi and nearby stars reflects more efficiently off this portion of the nebula than red light. The Earth's daytime sky appears blue for the same reason. The red and yellow regions shine primarily because of emission from the nebula's atomic and molecular gas. Light from nearby blue stars - more energetic than the bright star Antares - knocks electrons away from the gas, which then shines when the electrons recombine with the gas. The dark regions are caused by dust grains - born in young stellar atmospheres - which effectively block light emitted behind them.

Details for the astronerds:

I've always struggled with LRGB imaging -- the light pollution gradients are painful. And of course from my latitude (44deg), the gorgeous Ophiuchus clouds are very low in the soup of the horizon. But I ventured to darker skies this weekend, used a LP filter for Luminance, and hammered away at the gradients with Gradient Xterminator (a PS plugin that's worth every penny).

FSQ-85 & STL-11000M
LRGB (minutes) = 65:50:50:60

Some rights reserved

Taken on: May 11, 2011

Tags:

outer

space

astronomy

astronomie

astronomia

astrophotography

telescope

deep

sky

dark

night

ciel

heavens

celestial $Everybody's photos tagged with refractor$ refractor

hydrogen

alpha

nebula

nebulae

nebulosity

fsq85

stl11000

observatory

wide

field

widefield

panorama

lrgb

rho

ophiuchus

ophiuchi

IC4604

Sh2-9

Antares

Astrometrydotnet:version=14400

Astrometrydotnet:id=alpha-201105-47876168

Astrometrydotnet:status=solved

competition:astrophoto=2010

deepspace « less

Sets appears in: • recent and decent • Nebulae more » • Galaxies & Star Clusters « less

Groups appears in: • Night Images • Astrophotography - Astronomy - Astrophysics more » • Sky • !Catchy Colors • Skyscapes • After Dark - Night Photography • Astronomy • Flickr Wow (2 posts per day please) • WOW: commented with wow • Gazing Into Outer Space • Nature - Astronomy • AMAZING: commented with amazing • Space And Weather • Night Sky, The • Galaxies & Stars Group ( Planets, Moons & Comets too!) • *amazing nature* • Astro Art • SPACE LOVERS • Deep Space Astrophotography • Astronomia • Amateur Astronomy • Astronomy 123 • Space for All • Sky Shots # 1 • Pro Account Members • Astro-Photography and Similars • astrometry • Astronomy, Stars, Planets and Space • So Intergalactic! • Messier Objects • "Unlimited Photos: No Rules" • The Universe • astrophotoinsight • Astronomy for all • Parallel Universe • Insight Astronomy Photographer of the Year • Universe II • Astronomy Photos • Astronomers Talk • Astrofotógrafos del Mundo / World´s Astrophotographers « less

Stats: 20,986 views / 34 comments

go back

close tools panel

Badge creator

Use Flickriver Badge Creator to create a badge linking to your photos, your group or any other Flickriver view.

You can place your badge on your Flickr profile, Blog or Website.

Add to your iGoogle or Netvibes page

Flickriver widget for iGoogle or Netvibes can display almost any Flickriver view - most interesting today, by user, by group, by tag etc. Once added to your personalized homepage, just edit widget settings to select your desired view.

Clickr on one of the buttons below to install:

Embed on your Web site

To embed this view, Copy and Paste the following HTML code:

Black background (preview):

White background (preview):

Firefox and Chrome addons

Adds a 'Flickriver' button to your browser. While viewing any Flickr photos page, click on this button to open the same view on Flickriver.

Install in Firefox
Install in Chrome

Search plugin

Add 'Search on Flickriver' to your browser's search box. Works with Firefox and Internet Explorer. Install search plugin

"View on Flickriver" Greasemonkey script

A Greasemonkey script that adds Flickriver links to various Flickr photo pages - user photos, favorites, pools etc, allowing to quickly open the corresponding Flickriver view.

Also, allows quickly viewing any Flickr photo on black background in large size.

Install "View on Flickriver" script

Bookmarklet

While viewing any Flickr photos page, click on the bookmarklet to open the same view on Flickriver.

To install: drag and drop the following link to your Bookmarks toolbar.
IE users - add the link to your Favorites under the Links folder