
22-08-2008, 09:52 PM
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Loves Staring Into Space!
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Join Date: Jul 2007
Location: Hervey Bay QLD Au
Posts: 493
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Learner Needs Help…ED 80mm or ED 100mm or Equinox series
Hi...I need
I am still learning about all this stuff, so please forgive my ignorance. I am starting to feel more at ease with the idea of buying an ED Refractor for Astrophotography and skipping the idea of a bigger aptature on a Newtonian. It sounds like a night mare for a beginner using a reflector.
Basically out of the SKYWATCHER PRO ED SERIES I could afford to get the 100mmX900 which is currently on discount with the aluminum carry case and accessories. (Mount separate) However I was wondering how the focal difference between it & the 80mmX600mm might affect what photos I can & can’t take for Astrophotography.
Or to put it another way…Is the difference between the focal lengths of the Pro ED 80mmX600mm & Pro ED 100mmX900mm that much of a difference. Will I have to track twice as long??? Would the 100mmX900mm be better for more variety of shots, however require me to be more experienced.
And one last thing…I notice there is also another series called “Equinox”, which in the case of Andrews Communication are charging $450-$500 more.
What is the difference between the “Pro ED” series and the “Equinox APO ED” Is the difference worth it, that I should consider giving the Pro ED 100mm a miss and go for the Equinox 80mm regardless of F/ratio because of the quality???
I am just unsure of how to decide between the PRO ED 80mm or ED100mm or the Equinox 80mm… I do believe though; that one of those three, will be a good learner scope for astrophotography…Don’t ya think?
Any comments would be greatly appreciated
Thank you.
Dave
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