PHYS 1000 Lecture Notes - Lecture 3: Hubble Space Telescope, W. M. Keck Observatory, Radio Astronomy

• School: University of Windsor
• Department: Physics
• Course: PHYS 1000
• Professor: Mr.Mark Lubrick

Document Summary

Images can be formed through reflection or refraction. Image acquisition; charged-coupled devices (ccds) are electronic devices, can be quickly read out and reset. The data can be sent to a computer. The hst"s (cid:373)ai(cid:374) (cid:373)irror is (cid:1006). 4(cid:373) i(cid:374) dia(cid:373)eter a(cid:374)d is desig(cid:374)ed for (cid:448)isi(cid:271)le, infrared, and uv radiation. Originally the primary hst mirror was the wrong shape and made poor images. Brightness proportional to square of radius of mirror the figure, part (b) was taken with a telescope twice the size of (a) When better, can distinguish objects that are closer together resolution is proportional to wavelength and inversely proportional to telescope size (because of diffraction) This used to limit resolutio(cid:374) to a(cid:271)out (cid:1005) . Adapti(cid:448)e opti(cid:272)s tires to fi(cid:454) at(cid:373)ospheri(cid:272) (cid:271)lurri(cid:374)g (cid:271)(cid:455) defor(cid:373)i(cid:374)g the shape of the (cid:373)irror"s surfa(cid:272)e, u(cid:374)der (cid:272)o(cid:373)puter (cid:272)o(cid:374)trol, while the image is being exposed. Put telescopes on mountaintops, especially in deserts.