Questions tagged [light-pollution]

Questions regarding undesired brightening of the night sky inhibiting observation of astronomical objects.

Filter by
Sorted by
Tagged with
4
votes
2answers
484 views

How does the illumination of the sky from the sun compare to that of the moon?

I have trouble describing the questions but this is the best I can do. The sun lights up the sky, until it's about 18 degrees below the horizon. The moon also lights up the sky, and i'm wondering, how ...
1
vote
1answer
95 views

Light pollution and apparent magnitude of objects in solar system

Dust along the ecliptic scatters light, causing “light pollution” throughout the orbital plane of the solar system. If an object like, say, the sun's corona, had its brightness measured from above the ...
1
vote
1answer
89 views

What is the maximum Clear Sky Light Pollution rating to see the 2018 Perseid Meteor Shower?

I'm talking about the Light Pollution ratings on this page: http://www.cleardarksky.com/csk/faq/2.html I live in an area which is a 7 on the Bortle Scale ("red" on clearsky.com), but within 2 hours ...
2
votes
2answers
54 views

What is “class 4 light pollution” and could I estimate my own area's class visually?

This question currently asks I am living in the northern hemisphere in Greece and in class 4 area (light pollution scale).Is it possible to see the Andromeda galaxy with a naked eye? I'd never ...
5
votes
2answers
357 views

Is it possible to view the Andromeda galaxy with the naked eye in Greece?

I am living in the northern hemisphere in Greece and in class 4 area (light pollution scale). Is it possible to see the Andromeda galaxy with a naked eye?
3
votes
1answer
69 views

How will “modern equipment” allow the Royal Observatory to now avoid some of the effects of light pollution at Greenwich?

The article First Light: a new era for the Royal Observatory says (in part): 25 June 2018 The first modern, research-grade telescopes have just been installed at the Royal Observatory ...
2
votes
1answer
532 views

Does New Moon Affect Stargazing After MoonSet?

Referencing the following data for December 11th 2017. https://www.timeanddate.com/moon/@4799274?month=12&year=2017 To get a dark sky for stargazing does it matter if the moon is at 37.8% so ...
0
votes
1answer
26 views

What are reliable resources for weather and all other atmospheric obstructions?

Everyone knows you need clear skies to see what the stars or the Sun is doing. Weather is not too particularly hard to determine. There are many resources out there that will tell us the weather in ...
4
votes
4answers
5k views

What does the milky way look like from earth to the human eye without light pollution?

Cameras are great, they allow us to compress several seconds of light exposure into a single instant. This allows us to take amazing pictures of the night sky, like this one. Of course you can see we ...
1
vote
1answer
53 views

In an area with lots of light pollution, which clear sky clock parameter is most important?

I live on the periphery of a large light dome, looking towards the West. I get about 1/3 of the sky towards mountains that is darker. According to ClearDarkSky.com I live in an area with artificial to ...
1
vote
3answers
85 views

Is there any official star gazing location list?

I recall when I was a child (many years ago) my father taking us out to gaze at the starts. I remember being able to see the Milky Way with our naked eyes (North Central New Jersey). Nowadays living ...
2
votes
0answers
110 views

Convert RGB pixel value of an image to limiting magnitude

I have taken photos at different exposures from different places of the Orion constellation. I wish to find the effect of skyglow on the limiting magnitude of stars in the Orion constellation. How can ...
9
votes
2answers
214 views

In what parts of the world is it impossible to view the night sky due to light pollution?

Growing up far from any city, I have always been able to view the full night sky. It was just the way how things were. Of course, I knew that light pollution is a thing, and that the sky is a lot less ...
2
votes
0answers
38 views

Adverse effects of urban growth on old astronomy observatories? Need article/book [closed]

I am looking to get some information on the adverse effects of urban growth/light pollution on the oldest/traditional observatories of the world (europe). Can anyone recommend me books or articles to ...
1
vote
1answer
538 views

How high does light pollution reach into the sky?

I want to know how high does light pollution typically reach into the sky STRAIGHT UP? Has anyone ever researched this because I wonder if being at 10000ft elevation would reduce the amount of light ...
2
votes
1answer
55 views

Do Noctilucent clouds cause problems with telescopes?

Noctilucent clouds are at around 85km altitude and are formed of ice crystals. The ISS recently posted a number of photographs of these clouds and pointed out the key feature, which is the bright blue ...
2
votes
0answers
184 views

How long until the stars are no longer visible by the human eye due to light pollution? [closed]

I was curious to how long it will be until the stars are not able to be seen due to light pollution. I started wondering this after reading Yummie's Flash comic Knite.
3
votes
1answer
629 views

Sky view from Stellarium software vs. Sky view with naked eye

I'm slowly starting to interest in astronomy. Currently I'm enjoying in stargazing but unfortunately place where I live is very light polluted. I'm planing my vacation in a couple of months and one ...
5
votes
3answers
2k views

What would the night sky look like if Earth orbited an intergalactic star?

If the Earth and its host star were located exactly in-between the Milky Way and Andromeda would the night sky be completely void of light? Would stars be visible to the unaided eye? So there could ...
5
votes
1answer
452 views

How can I make Stellarium match the magnitude of stars visible in London, UK?

Can someone recommend some Stellarium settings to mimic the amount of light pollution, and magnitude of stars that should be visible on a clear night in London, UK?
4
votes
2answers
390 views

What range of exit pupils work for observing the full moon?

I'm observing the full moon, from a major city, with heavy light pollution and dust. The objective size is fixed, for this comparison, something between 4 and 6 inches. The question is about the ...
10
votes
2answers
434 views

Sky Glow calculations

I am leading a project for my High School NASA Club, and am looking for some advice. The goal of our project is to use a Raspberry Pi to control a camera that takes photos of the sky, and uses the ...
7
votes
1answer
84 views

Does the Perseid peak cause enough light pollution to be a problem?

The annual Perseid peak occurs between August 9-14. During this time, about one meteor burns up in the atmosphere per minute. When these meteorites burn up, they generate light. When you have one of ...
19
votes
1answer
422 views

I live in an area with a lot of light pollution, how can I view the stars without building an observatory?

I live in an urban area with a lot of light pollution and very little garden space. On a clear night I can see most of the sky and the brighter stars are visible. I can't build an observatory - I don'...