Author Topic: The size of the sun  (Read 2150 times)

0 Members and 1 Guest are viewing this topic.

Marco2001

  • Mission Commander
  • *****
  • Posts: 353
The size of the sun
« on: November 12, 2010, 03:51:33 PM »

This is how the sun looks right now in MCO: http://img294.imageshack.us/img294/636/tapetapulpituq.jpg
Note that the sun size is the same as viewed from earth.
Becouse Mars is futher away than Earth, the Sun's radial size is much smaller.
How much?
Quote
Since the average orbital distance of Mars is 1.5 AU, the change in apparent size of the sun would be 1/(1.5^2) = 44.4% the size as viewed from Earth. That is the apparent surface area of the sun; the radius would be 2/3 the size we are used to.

Becouse of that - Sun from Mars looks reely tiny.
Here are some photos of the Sun from Mars:
http://photojournal.jpl.nasa.gov/jpeg/PIA07453.jpg
http://www.nasa.gov/images/content/140154main_image_feature_481_ys_4.jpg
http://local.wasp.uwa.edu.au/~pbourke/miscellaneous/mars128/mars1.jpg

Poland here. My time: GMT + 1h
Writing a book about Mars. Any ideas? Type to me.
I'am an Astrobiology/Biology student.

thedubman

  • Mission Commander
  • *****
  • Posts: 416
Re: The size of the sun
« Reply #1 on: November 12, 2010, 04:00:06 PM »
Agree It seems a little large in the sim but i guess all that will change,.. great photos the last one is amazing and reminds me of MCO Mars:surveyor..

..Anything that makes the sim more martian looking is a good thing :)

Marco2001

  • Mission Commander
  • *****
  • Posts: 353
Re: The size of the sun
« Reply #2 on: November 12, 2010, 04:14:13 PM »
The last photo is fake ;D (made with "Bryce" propably)

I realize that It will most propably be modified later-on but I was thinking that at this stage of developement of MCO it's worth mentioning - just for noting it for the future.  ;)
The same goes with terrain texture, topography, natural light brightness, air colour and horizon depth.  :)

Poland here. My time: GMT + 1h
Writing a book about Mars. Any ideas? Type to me.
I'am an Astrobiology/Biology student.

thedubman

  • Mission Commander
  • *****
  • Posts: 416
Re: The size of the sun
« Reply #3 on: November 12, 2010, 05:21:01 PM »
I agree, to simulate the envoirment and its difficulties (light and shadow for example) should be close as poss,..

I remember distinctly on the demo My first ever attempt of leaving the crater on foot- and still recall the vista I got and realising the landscape was large and forboding- thats what got me interested.. I 'felt' like I was 'there' and the atmoshpere stuck..

pad69

  • Mission Commander
  • *****
  • Posts: 142
  • The Robe Rules
Re: The size of the sun
« Reply #4 on: November 16, 2010, 04:41:59 AM »
I agree, to simulate the envoirment and its difficulties (light and shadow for example) should be close as poss,..

I remember distinctly on the demo My first ever attempt of leaving the crater on foot- and still recall the vista I got and realising the landscape was large and forboding- thats what got me interested.. I 'felt' like I was 'there' and the atmoshpere stuck..

I agree
Murphy's Law applies "Anything that can possibly go wrong, does." or some say it this way "If anything can go wrong, it will.