Alcor and Mizar - focus test (Bradley Watson)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: 79 UMa) · The star Alcor (80 UMa) · The star Mizar (ζ UMa

Alcor and Mizar - focus test, Bradley Watson

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Alcor and Mizar - focus test

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Alcor and Mizar - focus test

I turned my telescope to this pair of stars to fine tune my RC scope manually, to my frustration and a loooooong while later, no matter what I tried I could not get the star spikes to line up................can anyone guess what the problem was?
It turned out that Mizar is a binary star system so no matter what I tried physics wasn't going to allow me to get those sharp aligned star spikes. In fact it turns out that Alcor and Mizar together form a quadruple star system, but I am not able to resolve Alcor.

The moral of the story is that you should research what you are imaging and in this case I liked what was a test and turned it into a mini project from which I learned something.

CS
Brad

Ritchey Chretien telescopes GSO Family
Broadband under Bortle 7/8/9
Imaged with N.I.N.A.
N.I.N.A. Users
Gimp Processing

TS Optics RC 154/1370

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Alcor and Mizar - focus test

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