|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
It's robbing me blind!
Although my yard serves up a fairly nice hunk of the night sky for viewing,
there is one major problem. . .a shopping center about 2 miles away severely impacts my southern sky. NELM is cut by about three magnitudes for a swath of the horizon perhaps 35 degrees wide and 20 degrees high. This time of year, the goodies of Orion, Canis Major, and Lepus all suffer to some extent and a trip to another location is a necessity for inspiring views of most of the objects behind the "curtain of light." I am thankful for the relatively good condition of the majority of my sky but it sure would be nice if that shopping center was not there. A tree? A billboard? A building? What is it that is robbing you blind from your observation spot at home and how much is the loss? --- Martin Remove "ilikestars" from email address |
#2
|
|||
|
|||
It's robbing me blind!
"Martin R. Howell" wrote in message
ink.net... A tree? A billboard? A building? What is it that is robbing you blind from your observation spot at home and how much is the loss? A prison to my south. The limiting magnitude on all but the most transparent nights is less than 4 below -25 degrees declination. That's why I was okay with building on the northern slope of the primary hill in town. I effectively eliminated everything below -35 degrees declination (my southern tree line) from view (about 10 degrees of southern exposure), which is awash in the glow; maybe magntiude 3 down there. Still, I can observe and image all of the Messier objects from my backyard. So as far as things go, I won't complain too much. To put that into perspective, the ZLM is sometimes as good as magnitude 6, and I can almost always see the magnitude 5.7 star on the line between Eta and Zeta Ursae Minoris when the transparency is good. So, those numbers in the south are dismal. I am also seeing an increase background sky brightness to my east and west. This is now reaching above the tree lines and encroaching on zenith, which is most distressing. Fortunately, I should have a good long run on zenith at magnitude 5.5 or so, as light pollution is highly localized and there's 100's of acres of pristine land here in the local area. Some of it privately owned and some of it conservation land that belongs to the town. There is however a lot of development going on in the larger area proper. There's no escaping the escalating light domes all around me. Bummer. |
#3
|
|||
|
|||
It's robbing me blind!
You should try my neighborhood, lights in every direction, mag 2-3 on a good
night.(near the zenith, BTW) Orion "Martin R. Howell" wrote in message ink.net... Although my yard serves up a fairly nice hunk of the night sky for viewing, there is one major problem. . .a shopping center about 2 miles away severely impacts my southern sky. NELM is cut by about three magnitudes for a swath of the horizon perhaps 35 degrees wide and 20 degrees high. This time of year, the goodies of Orion, Canis Major, and Lepus all suffer to some extent and a trip to another location is a necessity for inspiring views of most of the objects behind the "curtain of light." I am thankful for the relatively good condition of the majority of my sky but it sure would be nice if that shopping center was not there. A tree? A billboard? A building? What is it that is robbing you blind from your observation spot at home and how much is the loss? --- Martin Remove "ilikestars" from email address --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.613 / Virus Database: 392 - Release Date: 3/4/2004 |
#4
|
|||
|
|||
It's robbing me blind!
On Mon, 08 Mar 2004 17:16:18 GMT, "Martin R. Howell"
vaguely proposed a theory .......and in reply I say!: remove ns from my header address to reply via email The Sun bothers me most. The only time it's not there, it's cloudy! G A tree? A billboard? A building? What is it that is robbing you blind from your observation spot at home and how much is the loss? Actually, trees are our biggest problem, but also shield the area from light. ************************************************** ** sorry ..........no I'm not! remove ns from my header address to reply via email Spike....Spike? Hello? |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Just How Blind is the Human Race? | David Hamilton | Policy | 32 | July 22nd 04 06:35 AM |
NASA's Space X-Ray Telescope Going Partially Blind | JimO | Policy | 0 | November 6th 03 06:38 PM |
Who Are the Three Blind Mice? | John Maxson | Space Shuttle | 7 | August 14th 03 07:00 PM |