ASP3231 students are using a new telescope at Monash’s Hutton-Westfold Observato

Question

ASP3231 students are using a new telescope at Monash’s Hutton-Westfold Observatory that has an aperture of 336 mm and a focal length of 3910 mm. At the focal plane of the telescope is a 3326 × 2504 pixel CCD camera, where each of the pixels is 5.4 µm. The telescope tracks celestial objects using a computer-controlled equatorial mount.

(d) (8 marks) Using the CCD, we take an image of a G2V star tens of parsecs away. Can it be resolved with our equipment? (Provide a numerical justification for your answer.)

Explanation / Answer

we know that Dawes limit is given by

P = 120/D

Where P = resolving power of telescope

and D = diameter of telescpe aperture

P = 120/336

= 0.357 seconds of arc

since resolving power of telescope is very fine , we can resolve G2V star with this telescope

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