In the mid-nineteenth century, astrophotography was widely anticipated to eliminate human bias from astronomical observations by providing objective visual records of celestial phenomena. Early daguerreotypes of the Moon demonstrated that silver plates could capture topographical features far more accurately than hand-drawn illustrations. However, early photographic plates required exceptionally long exposure times, during which atmospheric turbulence often blurred fine details. Consequently, astronomers continued to rely on direct visual observations through telescopes and hand-drawn sketches to record rapidly changing or minute planetary features, such as the surface markings of Mars. Although photographic techniques improved significantly over subsequent decades, early astronomical photography served primarily as a supplement to, rather than an immediate replacement for, observational drafting.
Which of the following can be inferred from the passage regarding nineteenth-century astronomers studying minute planetary features?
- They found hand-drawn sketches more effective than early photographs for recording fine details that were obscured by exposure-related atmospheric blurring.Cevap
- BThey completely abandoned direct telescopic observation once silver-plate daguerreotypes were introduced for lunar mapping.
- CThey believed atmospheric turbulence exerted a far greater blurring effect on hand-drawn illustrations than on photographic exposures.
- DThey preferred photographic plates primarily because long exposure times permitted faster and more convenient documentation of surface markings.
- EThey asserted that hand-drawn sketches were inherently superior to daguerreotypes for depicting static lunar topographical features.