Equipment for determining double star PA

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lone77star
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Joined: Tue Jul 26, 2011 1:17 pm
Location: Cebu, Philippines
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Equipment for determining double star PA

Post by lone77star »

Hi, I'm hoping to get a new scope, soon for some serious double star observing.

Does anyone have any experience determining PA and sep between primary and secondary. Any help would be appreciated. Thanks!
David Frydman
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Post by David Frydman »

Dear Carl,
I used to use a filar micrometer using spider web cross wires.
Some had position angle measures, mine did not.
I think other methods are used by amateurs nowadays but I cannot remember the details although I did read about it.

Regards, David
Brian
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Location: Wellingborough
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Post by Brian »

Hi Carl.

Have you seen this website:

http://astrosurf.com/hfosaf/

Florent Losse uses a webcam to do accurate DS measurements. The site is presented in French, English and German versions.

HTH,
Brian
52.3N 0.6W
Wellingborough UK.

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