To find use the following equation
object size = distance x (smallest angle/57.3°)
Since Arecibo is on Earth, to find the distance take the distance between the sun and Earth (in AU) and subtract the distance between the sun and Venus (in AU). Then multiply the AU by 1.5 x 108 (or the number of kilometers in 1 AU)
1 AU - 0.72 AU = 0.28 AU
0.28 AU x 1.5 x 108 = 4.2 x 107 km
For 1'
object size = 4.2 x 107 x (1/60°/57.3°)
object size = 12216.4 km
For 1"
object size = 4.2 x 107 x (1/3600°/57.3°)
object size = 203.6 km
The Arecibo telescope was built between the summer of 1960 and November 1963.
The Arecibo Observatory is in the United States of America. It is in the municipality of Arecibo which is in Puerto Rico. It is a very famous radio telescope.
The Arecibo radio telescope is the largest radiotelescope in the world. It is suspended in a valley in the Puerto Rican mountains.
Arecibo
It i detects Radio waves.
The Arecibo telescope was built between the summer of 1960 and November 1963.
Arecibo hosts the largest radio telescope in the world, filling a mountain valley in Puerto Rico. Perhaps you saw it pictured in the James Bond movie "Goldeneye".
The Arecibo Observatory is in the United States of America. It is in the municipality of Arecibo which is in Puerto Rico. It is a very famous radio telescope.
YerkesHale/PalomarHubbleGordon/Arecibo
Arecibo, VLA
The Arecibo radio telescope is the largest radiotelescope in the world. It is suspended in a valley in the Puerto Rican mountains.
The Arecibo radio telescope is the largest radiotelescope in the world. It is suspended in a valley in the Puerto Rican mountains.
Arecibo
Arecibo
It i detects Radio waves.
The William E. Gordon Radio Telescope at Arecibo in Puerto Rico stays where it's at, permanently. Its 'dish' reflector is 305 meters ( 1,000 feet ) across, and it's built into a valley in the ground.
Arecibo Radio Telescope is in Puerto Rico at 18 degrees 20 minutes north, 66 degrees 45 minutes west. It's plainly visible on Google Earth, for example.