Overlapping Galaxy Colors…

This  link piqued my interest= The Color of Overlapping Galaxies and the explaination of the color filters used to take the pictures is fascinating posted by Bill Keel … “For most of these galaxies, we took images in two filters – the B band (blue), which lies between the SDSS u and g filters, and the I filter, which used to stand for infrared but nowadays (with the proliferation of genuine infrared imagers at much longer wavelengths) we think of as a red just a bit too deep for our eyes to see. Making a color image takes three filters, not just two. Fortunately, the colors of most galaxies are so well-behaved that we can synthesize the middle filter (green) from the two we have; this is something done pretty often with Hubble images as well. I then pasted the three colors ether using a brightness mapping that is logarithmic starting slightly below the sky-brightness level and consistent across the various galaxies – this ends up much like the familiar SDSS color display.”

…and why does this remind me of “Blows Against the Empire” by Jefferson Starship? is  this because of the concert I went to in 1972 or the overlapping colored galaxy effect? IPOD, Google and light gentle breezes? Have a great day and spend some time out on the “Stardeck”!

Advertisements

0 Responses to “Overlapping Galaxy Colors…”



  1. Leave a Comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s




Welcome

Thanks for visiting my blog where you'll find my latest news, class details, and new tips and tricks. You'll find more information about my work at my website. Come back often.

Calendar

June 2008
M T W T F S S
« May   Jul »
 1
2345678
9101112131415
16171819202122
23242526272829
30  

%d bloggers like this: