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Old 16-01-2009, 02:13 PM
Zuts
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Join Date: Mar 2007
Location: sydney
Posts: 1,830
Quote:
Originally Posted by prova View Post
Wondering if the need for guiding is an absolute must for deep-space astrophotography? I want to start imaging galaxies but wondering if I get my polar alignment and drift "bang-on" upto around 4-5mins (unguided) will this exposure time suffice if there are 2+ hours of data?
Hi,

Unfortunately I wouldnt think a HEQ5 pro could go for more than a minute unguided. The reason is PE. No matter how well polar aligned you are the machining errors in your gears will give you around 30 to 50 arcseconds error.

Try it and see, basically though you will get sick of egg shaped stars and eventually fork out for a guide scope and camera.

Cheers
Paul
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