The big limitation was a lack of telescopes.
joe
The telescope wasn't invented until about 1604, so "early" astronomers had no telescopes.
EARLY astronomers primarily used mathematics; that's why so many "early astronomers" are described as "mathematician and astronomer". Until the invention of the telescope in the early 1600's, there were no astronomical tools beyond the octant.
Some astronomers from the early 1400s include Regiomontanus, Copernicus, and Purbach. These astronomers made significant contributions to the understanding of the cosmos and laid the foundation for future astronomical discoveries.
Juno was the third asteroid to be discovered by astronomers early in the 19th century.
The "Martian canals" originally thought to be evidence of a complex network of waterways were later found to be an optical illusion. These features observed by early astronomers were likely due to limitations in their equipment and interpretation of what they were seeing on the Martian surface.
geocentric theory
Early astronomers observed that Mercury had two distinct elongated appearances: as a morning star and as an evening star. They mistakenly believed these were two separate planets when, in fact, it was due to Mercury's proximity to the Sun causing it to be visible at certain times from Earth.
jupiter,saturn, uranusan neptune are called
Mary Ackworth Orr has written: 'Dante and the early astronomers'
Because there is a belief that the galaxies move away from you once you walk
All astronomers are scientists.All astronomers are scientists.All astronomers are scientists.All astronomers are scientists.