[ATMoB-discuss] Visible dust lanes in Milky Way?
Bern Kosicki
kosicki at verizon.net
Tue Aug 22 20:20:14 CEST 2006
Paul,
What is your Dark Sky Meter? Is it one you made yourself, or purchased?
Does the club have access to one of these also?
Bernie
At 01:16 AM 8/20/2006, valleli at rcn.com wrote:
>Jesse,
>Adding to what others have already commented on your Milky Way
>observation, I was also stargazing from Meredith Neck, NH on Wed. night
>and also noted an unusually clear night.
>The largest, darkest section in the region of Cygnus and east of Aquila is
>unofficially known by galactic astronomers as "The Great Rift". George
>Lucas must have picked up on this for Star Wars.
>I have been observing from this area for many years but get discouraged by
>the light domes over the Weirs and Gunstock areas. They were there, but
>not as bright as usual.
>Luckily I had my Dark Sky Meter with me and took some readings. Under
>thick evergreens it was 23.00, the same as a photographic darkroom. Out on
>the dock it was 21.46 away from the Milky Way, and 21.06 directly at it,
>slightly to the East of the zenith.
>The best readings at Stellafane, VT have been numerous at around 22.45 and
>about the same at the Winter Star Party in the Florida Keys.
>The units are a logarithmic scale in units of stellar magnitude per square
>arc-second. They can be converted to Candelas using a light calculator on
>the Dark Sky Meter web site. For comparison, a brightly lit parking lot
>can be about 10.00 to 15.00.
>Paul
>
>
>_______________________________________________
>ATMoB-discuss mailing list
>ATMoB-discuss at atmob.org
>http://lists.atmob.org/mailman/listinfo/atmob-discuss
More information about the Atmob-discuss
mailing list