FOV calculations ?

[omegacrux]

Just wondering how do they calculate fov eg 60* or 100* thanks for any info another head-scratcher for me . :confused2:

[mikerr]

David, this calculator should do the trick.

http://www.atmsite.org/contrib/Prewitt/fieldOfView/


Michael.

[omegacrux]

Thanks for that Mike

[Jan Masu]

Hi David,

If you have a 12mm ep with 65 fov and on a scope with 600mm focal,
then,

Mag= 600/12 or 50x
afov = fov/mag or 65/50 or 1.3 deg

The higher the mag, the lower will be the afov.

hope this help

[mikerr]

Another one.....

http://www.telescope-simulator.com/index.php?option=com_content&view=article&id=45


Michael.

[Barrykgerdes]

And yet another one.
The *.BAS source will run in Qbasic
and a compiled QB 64 program that will run on Windows 7
http://barry.sarcasmogerdes.com/qb64/lensFOV.zip (http://barry.sarcasmogerdes.com/qb64/lensFOV.zip)

Barry

[omegacrux]

Thanks Barry & Mike that simulator is handy for newcomers give them an idea what would be a good ep for different apitures (i think that's how its spelt) and lengths an ed80 world be way different than a 12in mak thanks again