i have 4 blocks of Astronomy and astrophysics in my course. Each block has 4 units ,so a total of 16 units/chapters.I am through with the first block and came across observational astronomy,types of telescopes,absolute/apparent modulus,virial theorem..A good reference textbook is what i need THANX in advance(adsbygoogle = window.adsbygoogle || []).push({});

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# Need a good textbook for astrophysics

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