In Addition to Its Capability of Being Stored, an Ordinary

question 224

Multiple Choice

In addition to its capability of being stored, an ordinary (nondigital) photograph has what major advantage over the unaided human eye for astronomical observations?

• A) The photograph is sensitive to 70% of the photons that land on it.
• B) The photograph can easily be enhanced by feeding its pixels electronically into a computer.
• C) The photograph responds to a long exposure time by producing higher resolution.
• D) The photograph can be used in conjunction with a filter to observe only certain colors.