Five parts to this question (will award best answer today!) 1 - the light gather
ID: 2302684 • Letter: F
Question
Five parts to this question (will award best answer today!)
1 - the light gathering power of a telescope compared to the human eye can be determined using the equation LGP = 25d2. How many times greater is the LGP of a 3 meter telescope compared to a 10 meter telescope? Show all logic and work.
2 - Write a relationship statement describing how the diffraction size of the image depends on the wavelength of the light. Please do this in a complete sentance.
3. The angular resolution of a telescope can be determined using the equation: RP = 4.6/d, where d is the diameter of the objective in inches and the angular resolving power is in seconds of arc. If the diameter of the human eye is 1/5 of an inch, what is the angular resoltion of the human eye? What is the angular resolution of the 10-meter Keck telescope? Show all logic and work.
4. List all the pats of the electrrmagnetic spectrum that can be studied from space (satellite)
5. If you plot LGP vs. d2, what does the graph look like? Make a sketch. (Please describe how it would look)
Explanation / Answer
Resolution is another vital telescope function. Simply put, telescope resolution limit determines how small a detail can be resolved in the image. Generally assumed to be 13 (at the wavelength you spedify) / diameter in cm, so 13/40 = 0.3 arc seconds. They don't. In fact with two telescopes of the same aperture, the refractpr will gather more light than the reflector for two reasons. The refractor's aperture is unobstructed by a secondary mirror, and there is light loss in the reflective coating of the mirrors. The advantage of a reflector is that it is less expensive to construct than a refractor of the same size. Thus for a given price, you can get a reflector with twice as much aperture than the refractor
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