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DJB
Pooh-Bah
Reged: 02/23/05
Posts: 1267
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Hi CESD,
I am curious. Why do you wear tinted contact lenses, which I have tried before.
Is it a medical requirement, for sun protection, or none of my business. Just curious. Thanks.
Best regards,
Dave.
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MIKADO
member
Reged: 03/21/06
Posts: 52
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Without wanting you offend which is the relationship with the binoculars ? 
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EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12581
Loc: Cumberland, R I , USA42N71.4W
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most of my observing session was with 15x70s
edz
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Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
member#21
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Tony Flanders
Carpal Tunnel
Reged: 05/18/06
Posts: 2098
Loc: Cambridge, MA, USA
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Quote:
Bear in mind people, that Edz is reporting from *very* dark skies ...
Just to clarify: If I'm right that this site is in the yellow zone, that's really not very dark at all. Our Western friends would no doubt consider it unacceptably light-polluted. The only spot in NY State that might reasonably be called very dark is the center of Adirondack State Forest, which is hard to reach without a canoe.
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Tony Flanders
eyeglasses
6x15 and 8x32 monoculars
8x25, 7x35, 10x30 IS, 10x50, and 15x70 binoculars
70mm and 100mm achromatic refractors
4.5", 7", and 12.5" Dobs
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Special Ed
Post Laureate
Reged: 05/18/03
Posts: 3531
Loc: Greenbrier Co., WV 38N, 80W
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Quote:
Quote:
Bear in mind people, that Edz is reporting from *very* dark skies ...
Just to clarify: If I'm right that this site is in the yellow zone, that's really not very dark at all. Our Western friends would no doubt consider it unacceptably light-polluted. The only spot in NY State that might reasonably be called very dark is the center of Adirondack State Forest, which is hard to reach without a canoe.
Good point, Tony. "Very dark" is relative. But don't forget this other point which you also made--the direction Edz was looking:
Quote:
Quote:
since Glens Falls, the major light polluter, is to the south and there's nothing at all to the north, the sky to the north should be darker than normally expected in the yellow zone.
this exactly reflects my experiences for the two nights. the sky to the nnw, n, ne, e was much darker. Not sure how this fits in, but M13 glow was easily seen naked eye.
Another variable which affects the visiblity of objects hasn't been mentioned--transparency. Our friends out West often benefit from dry air to go with their dark skies. Here in the East, the amount of water vapor in the air can be a real limiting factor.
Here's an example from my own experience. I live on the left leg of the large crosshair on this light pollution map from CSC. My skies are dark, but on nights when the transparency is poor, I have had a hard time seeing 3rd magnitude stars 50° above the horizon, let alone faint fuzzies (I don't even try). Edz didn't mention the transparency, but if he had transparent conditions, that would have enhanced the dark skies he was experiencing. 
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Michael Rosolina
8" f/10 Orange Tube SCT
4.25" f/4.2 Astroscan Reflector
SVP 3.6" f/13.6 CA Reflector
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery
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CESDewar
GorillAstronomer
Reged: 01/16/05
Posts: 1811
Loc: Morganton, GA, USA
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Quote:
I am curious. Why do you wear tinted contact lenses, which I have tried before.
Uhhh, because when I drop them in the sink I can at least find them 
Actually, I recently got a pair of clear contacts to see if the tinting was significant in terms of astronomical viewing. Main impression was that it really did not make an observable difference. And then one lens "disappeared" - so back to the tinted one's 
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DNTash
professor emeritus
Reged: 09/02/07
Posts: 635
Loc: New Delhi, India
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Great report Ed. Makes me want to look into getting a pair of those Oberwerks...
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WO 66 Doublet
Meade ETX-90PE
WO "Crayford-ed" Orion 120ST
SkyMaster 15x70's, Meade Safari Pro 8x42's, Nikon Monarch 10x42's
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DJB
Pooh-Bah
Reged: 02/23/05
Posts: 1267
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Hi CESD,
Yep, I can understand how one can get away from you. For what it is worth, I NEVER saw any difference between the tinted and clear contact lenses, when using any optical equipment.
I believe that our eye-brain circuitry accommodates quite well in these situations. Thanks for the clarification.
Best regards,
Dave.
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