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Old 27-09-2021, 03:04 PM
Startrek (Martin)
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Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,086
Quote:
Originally Posted by Stephane View Post
Thanks Martin! My focal length is 800 mm, so I guess that'll work fine.

I am thinking of getting a ZWO ASI120 mm.

Cheers,
Stéphane
Hi Stephanie,
Take this with a grain of salt if you wish but be advised that an f4 scope is not a beginner scope ( not quite sure of your experience) With fairly fast optics it will be more difficult to collimate and set up your imaging gear than an f5 which I use ( BT 200 f5 ) I also use use a Bintel 6” f6 which is gem to image with. I’ve been imaging for 4 years and would never consider using an f4 scope. My Bintel 8” f5 ( 1000mm focal length) is more than adequate to image most objects in the night sky and is ever so much more forgiving in regards to Collimation and set up of your imaging gear. At f4, Coma will be a struggle to correct as a beginner.
If you’ve had some experience in imaging then ignore my suggestions and recommendations above
Good luck and I hope it all works out for you in the end
Enjoy our amazing hobby
Clear Skies
Martin
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