Thanks all that answered.

Reason asking is as many of you already know on Dish Network TV, they have this channel called Dish Earth, Basically it's a nice color camera looking back at the earth. it's full screen in size so I guess about a 20 degree field of view.

Part that is cool is to check it as the day goes by watching the phase of the earth change as the sun changes position.

And now thatwe are getting close to equinox the sun actually passes behind the earth at about 2:30 AM.

I taped it last nigh to see what happens as it passes behind, pretty cool looks almost like the last phases of a total solar eclipse with a diamond ring effect etc. And you can see just as it passes behind the gain on the camera opens wide open and lits of i'm assuming digital noise appears. or if not noise I'm thinking damaged pixles for they never change position.

But the bending of the sunlight is cool too the earth remains as a thin line around the horizion, way cool, and amazing how stable the orbit seems to be. if there is any wobble due to an elliptical orbit I can't see it, it must be extremely small.

Too bad we cant convince these geo bird people to share some of their power, imagine how wide of a linear transponder we could have for the same power this one camera thats running 24/7 has to consume. YIKES!

Joe WB9SBD

Ken Ernandes wrote:

The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from Geosynchronous Earth Orbit (GEO).

73, Ken N2WWD

-----Original Message-----

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From: Joe nss@mwt.net Sent: Sep 15, 2009 12:07 PM To: BB amsat-bb@amsat.org Subject: [amsat-bb] Geosyro orbit.

Hi All,

I have a couple of questions, How big is the earth from a geosyncronous (sp?) orbit.

Like the Moon from Earth is roughly 1/2 a degree.

What is the earth from a geo orbit? anyone know?

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