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FirstSight
Post Laureate
   
Reged: 12/26/05
Posts: 3871
Loc: Raleigh, NC
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Re: ZLM required to see Milky Way?
07/01/09 05:13 PM
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As I was reminded vividly on a recent trip to one of the relatively un-light polluted out-islands in the Bahamas, and comparing it to plainly being able to "see" the Milky Way from the beach in North Carolina -
There's an ENORMOUS difference between being able to easily, plainly see a mostly homogeneous-looking white stream of the Milky Way over roughly a 90 degree band from Sagittarius up through Cygnus (North Carolina beach site compromised by light pollution)
- versus being able to vividly see the detailed structure of the Milky Way from below Sagittarius, up through Cygnus, and continuing through Cassiopia - including well-defined individual dense strands and clouds of starlight clearly separated by well-defined dark streams and bands, especially between Ophiuchus and Sagittarius (very dark site on Bahamas out-island). There's quite a difference in what you see between partial mag 5.0 skies (mainly directly overhead and running down directly south) and mag 6-plus skies completely uncompromised by any light pollution in any direction.
I can only imagine it gets even better if you can see the Milky Way from a southerly location with a dry climate and a few thousand feet of altitude.
-------------------- Chris M., aka "First Sight"
Orion XT12i Dob with Moonlite CR-2 focuser
WO Megrez 90 refractor on UniStar Light mount
Nikon 10x50 Binoculars
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