View of Earth and Jupiter from Mars

[THT]

It's amazing how something always picks up my space cadet enthusiasm after being beaten down.


Earth, Moon, and Jupiter, as Seen From Mars (http://www.msss.com/mars_images/moc/2003/05/22/)

What does Earth look like when viewed from Mars? At 13:00 GMT on 8 May 2003, the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) had an opportunity to find out. In addition, a fortuitous alignment of Earth and Jupiter---the first planetary conjunction viewed from another planet---permitted the MOC to acquire an image of both of these bodies and their larger satellites.

Earth as seen from the Mars Orbiter Camera:
http://www.msss.com/mars_images/moc/2003/05/22/earth_200.jpg

[thuh Freak]

reminds me of a bit of brian regan (daap://66.108.19.106/)'s jokes. kind of interesting. i'm surprised that nasa couldn't afford color cameras.

[Aquafire]

Is this really news ?http://www.fortunecity.com/tattooine/bester/250/images/marvinth.jpg

[ena]

Originally posted by aquafire
Is this really news ?http://www.fortunecity.com/tattooine/bester/250/images/marvinth.jpg


"...oh, the earth will be gone in just a few seconds----it obstructs my view of Venus"

[Aquafire]

Originally posted by ena
"...oh, the earth will be gone in just a few seconds----it obstructs my view of Venus" :lol: :lol: :lol:

[BuonRotto]

Man, I was at least hoping for a nice desktop. :( ;)

[Mac OS X Addict]

Cool, but very hard to see. :D

[curiousuburb]

that's pretty sweet.

maybe if the australians flick their lights again we could be a signal lamp sending pan-galactic morse

Voyager 1 was tasked to shoot the view home as it left our neighbourhood
the result is described as a Solar System Family Portrait (http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-solarsystem.html)
alternative download/caption from APOD (http://antwrp.gsfc.nasa.gov/apod/ap020214.html)

details of the Mars Global Surveyor MOC camera subsystem are here (http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1996-062A&ex=1)

as for black&white -vs.- colour sensors, it's partly a matter of available technological capabilities (which curiously mimic some human capabilities)

a nice intro to colour in the eye is here (http://www.abelard.org/colour/col-hi.htm) including footnotes on the evolution of colour vision and evolution of the eye (for those who frequent the evolution threads)

clever interactive colour explanations [click R-G-B or C-M-Y-K] here (http://www.soc.soton.ac.uk/JRD/SCHOOL/mt/mt001a_2.html)

colour CCDs are less sensitive than b&w due to alignment of sensor grid in filtered RGB where 50% green gets picked up, but only 25% red and blue

Hubble is only grayscale, but a combination of wavelengths gets colourized (http://heritage.stsci.edu/commonpages/infoindex/ourimages/color_comp.html)

[SledgeHammer]

quick exp. of color astrophotography:

use a b&w ccd camera to take 4 pictures 1 each through a clear, a red, a blue, and a green filter. Then combine 'em (you can do it in PS). That's how all the color pics here (http://eastern.edu/academic/trad_undg/sas/depts/physsci/index.html) were done.

[Aquafire]

Originally posted by curiousuburb
.....maybe if the Australians flick their lights again we could be a signal lamp sending pan-galactic morse
We did..ages ago..Via Parkes & Woomera....
We sent the following:

"dot dot dot........dot..........dash dot.........dash dot dot.......

dash dash.......dash dash dash.......dot dash dot....dot.......

dash dot dot dot.........dot.........dot......dot dash dot....."

Reply received ...as follows.....






:http://www.fosters.com.au/beer/images/home_beer_image.jpg

Order recieved by galactic bar..it's on its way mate !:D

[curiousuburb]

not bad...

but IIRC, the critical signal in old school science fiction was:
--_.-_.-._..._/ _-._._._-.._..._/ _.--_---_--_._-.

(where the / represents a word break and the underscore separates letters)

[ThunderPoit]

i think a combination of the two plus a little extra will work:

.-- . / -. . . -.. / .-- --- -- . -. --..-- / -... . . .-. --..-- / .- -. -.. / -- --- -. . -.-- .-.-.-

[curiousuburb]

.--_.-_.-._.--._/ _-.._.-._.._...-_._--..--_/ _..-._.-.._-.--_.._-._--._/ _-.-._.-_.-._..._/
_.-_-._-.._/ _-._._.-_-_---_/ _--._.-_-.._--._._-_..._/ _.-.._.._-.-_._/ _...._.-_-._-.._/
_.--._...._.-_..._._.-._..._/ _.-_.-.._..._---_/ _.-_-.-._-.-._._.--._-_._-.._

edit: line breaks added to help page fit

[Aquafire]

Somehow I suspect that they be loking for more sophisticated signs of life.
So maybe we should send .....http://www.atarimagazines.com/v6n3/asciiart.jpg

[Aquafire]

Or Even Better !!!!!http://www.cs.northwestern.edu/~franklin/images/hitch-hiker.jpeg