WK3HW - JO

# WK3HW - JO - Homework(Due Tuesday Please show your...

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Homework (Due Tuesday. .. Please show your calculations for your answers ): 1) What are the benefits and drawbacks of using space based telescopes? BENEFITS: * They can be used 24-7. * They can be used for extended periods of time. * You don’t have to wait for night. * You are able to see further. * There is no atmosphere to distort an image. * Almost no dust or condensation to worry about. DRAWBACKS: * They are complicated to install. * They are expensive to purchase. * Maintenance takes a long time and is more complicated. 2) Compare the lighting gathering power of the NASA IRTF (3m) and with that of a small telescope with a diameter of 70 mm. LGP A /LGP B = (D A /D B ) 2 3m = 3*100 = 300cm 70mm = 7cm 300/7 = 42.86 42.86 2 = 1836.98 The NASA IRTF gathers 1836.98 times more light than the smaller telescope. 3) The surface temperature of the Sun is 5800K. What iwavelength of maximum intensity does the Sun emit? λ

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WK3HW - JO - Homework(Due Tuesday Please show your...

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