Quote:Where I live, the sky doesn't feel dark for quite some time after the sun goes down. In fact, it doesn't feel dark until after midnight. This darkness persists until the sun comes up. Is this the effect of light pollution and people finally turning off lights as it gets later?
First and foremost observing love: naked eye.
Last but not least, telescopes.
And I sometimes dabble with cameras.
Orion XT12i with Swayze-refigured primary & Protostar secondary
Televue NP101 refractor
William Optics Megrez 90 refractor
Universal Astronomics Deluxe Mounts
Quote:Another significant factor where the light dome of a metro area is visible is that a significant-enough portion of commercial lighting in many areas switches off (at least partially) sometime between 11pm and midnight to make a noticeable difference in sky darkness.
14" Strut; 10"XT; 102ES; 22 in Process; 3.5,5,7,10,14,20mm Pentax XW; 17.3 & 12mm Delos; 27mm Panoptic; 20&24mm ES 68; 24mm ES 82; 30mm ES 82; 6&10mm BCO;
Quote: The other truly huge individual contributions to light pollution -- the only ones that have grown significantly over the past decade in my part of the world -- are lighted outdoor ball fields.
Quote:Nevertheless, I cannot help but think about the conflict every time I step into a lighted facility to do a game. Even on the clearest nights only one or two of the brightest stars and perhaps Jupiter are visible at best from the nearby vicinity of a lighted field.
Quote:As long as the lights are shielded to cut off unwanted light, and the fields are not lighted when not in use, I see no problem. It's unreasonable to expect amateur astronomy or a simple preference for a dark sky to everywhere override all other human activities.
Teeter 15" Dob ReflectorSky Watcher Pro 120 ED RefractorCelestron AVX Equatorial MountExplore Scientific 82 deg N2 eyepiecesBinotron Binoviewer... Yeah Baby!Love my eyepatch when not binoviewing!
Quote:Living in Boston there is a HUGE difference when there is a ball game at Fenway....... Fortunately they aren't on every night and are dark all winter.
George N Obsession 20 Optical Guidance Systems 10" F/9 R-C Cass 6" F/5 & 8" F/8 home-made Newts Explore Scientific 127mm ED MI-250 mount Denk II bino-viewer, with PowerX and Newt reducer, Member, International Dark-Sky Association
Quote:Quote:Living in Boston there is a HUGE difference when there is a ball game at Fenway....... Fortunately they aren't on every night and are dark all winter. Of course if you live were I do, in ski country, the ski resorts have their mountain sides lit at night, and those bright lights are shining down on artificial snow even when there generally is none. There is one ski center in northeast PA that can be seen for many miles when driving on I-81 thru the mountains.