Moon in colours

mymoon · Post by **mymoon** » Mon Oct 20, 2008 7:46 am

inspired by the website click here

I took this moon photo with my workhorse a 5inch f4

this time I did not convert to monochromatic image for the moon contains distinct tone of varying hues due to the presence of minerals and variations in geological age formation.

So here I have carried out some colour enhancement to the moon by increasing the saturation of the image using the "Hue and Saturation " tool of Photoshop

WOW. a bit overcook.

Any chemist or geologist that can decipher what minerals by the colour?

cheers

Dragon Man · Post by **Dragon Man** » Mon Oct 20, 2008 11:13 am

Very nicely done.

I did the same thing about 2 years ago and it is amazing the amount of different minerals that show up.

Good stuff [smilie=good-job.gif]

Dragon Man · Post by **Dragon Man** » Mon Oct 20, 2008 11:24 am

Just found my old image:

Post by **Airconvent** » Mon Oct 20, 2008 11:28 pm

haha..nice moon images, guys!
I prefer the moon in its original colour, though! [smilie=ahaaah.gif]

and welcome to singastro, aziz! [smilie=cute.gif]

zackae · Post by **zackae** » Tue Oct 21, 2008 12:34 am

Minerals: Lunar Rock. LOL.. I know its lame.

Post by **Airconvent** » Tue Oct 21, 2008 1:16 am

Not very good at astro photo myelf but here is an old moon photo taken using a Pentax K100D + Sigma 600mm mirror lens during one of those rare "enthusiatic" moments.. [smilie=angel2.gif]

Dragon Man · Post by **Dragon Man** » Tue Oct 21, 2008 9:54 am

That's quite a good image, Richard!!!

Yours even shows a slight hint of colouration near the terminator [smilie=good-job.gif]

Dragon Man · Post by **Dragon Man** » Tue Oct 21, 2008 9:56 am

Airconvent wrote:haha..nice moon images, guys!
I prefer the moon in its original colour, though!

and welcome to singastro, aziz!

I agree, the Moon does look better in it's natural greys.
But it is fun to be able to bring out the minerals.

Dragon Man · Post by **Dragon Man** » Tue Oct 21, 2008 12:00 pm

Here is a mineral breakdown of the colours:

Iron absorbs light preferentially around 1000 nm while titanium absorbs preferentially at around 415 nm. Thus both maturation and mafic composite ratio images will show strong iron based mafic signatures as being greenish. Mafic materials with high titanium content (like clinopyroxene or ilmenite) will appear bluish on a mafic composite ratio image. Low titanium pyroxenes such as orthopyroxene (like norite) will appear reddish, violet or purplish on a mafic composite ratio image. Ancient exposed lunar surfaces can also be differentiated from more recently created surface features based upon their increased concentration of glasses as a consequence of long term micrometeorite bombardment. Such surfaces appear reddish or orange red on maturation composite ratio images. Pyroclastic flows containing orange glasses appear deep red on maturation composite ratio images.

[smilie=good-job.gif]

boothee · Post by **boothee** » Tue Oct 21, 2008 9:02 pm

Wow . . . Nice one . . .
I should try with my old moon pictures . . . .
Thanks for sharing . . .

boothee