Flashcards
Chapter 4: Astronomy, A Physical Perspective
Cards in this deck (6)
- 1Light GatheringDetermined by the diameter of the lense.
We use the formula below to determine how many magnitudes fainter stars a diameter d_2>d_1 can see. - 2Angular resolution
- 3Focal lengthThe distance from the lens at which a bundle of rays are gathered
- 4Focal ratiof = aperture on a camera.
Each f-stop on a camera changes the brightness by a factor 2. Therefor each f-stop is a factor √2.
- 5Linear seperation, xThe linear distance between two objects that form an angle theta with the lens/film-axis.
- 6Angular magnificationThis is how much the angular size of an object will increase. On binoculars or telescopes it can be 10x or 25x etc.
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- University Astrophysics Flashcards on Chapter 4: Astronomy, A Physical Perspective, created by Wilhelm André on 03/05/2016.
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- Wilhelm André
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