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1 vote
0 answers
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How can I estimate a stars surface temperature, luminosity, radius, and lifetime only knowing it's solar mass and peak wavelength? [duplicate]

For example: if a 10 solar mass star emits light at a peak wavelength of λ = 300nm. How can I calculate a stars surface temperature, luminosity, radius, and lifetime with this infomation?
R-802's user avatar
  • 57
3 votes
0 answers
693 views

DIY Sky Quality Meter: Conversion between Illuminance and Luminance

I am trying to create a homemade Sky Quality Meter (SQM) using a TSL2591 light sensor. This sensor measures Illumination (lux), but SQMs measure Luminance (mpsas). I have seen that there are many ...
Boube's user avatar
  • 31
2 votes
2 answers
2k views

Radiative Flux, Irradiance and Luminosity confusion

First of all I know there is a similar question here, but I feel is wasn't answered at all. My question is that I have seen many texts which says that Radiative Flux is equal to the Irradiance of a ...
Jotarata's user avatar
7 votes
1 answer
3k views

How bright would it be on the "face" of Titan

If you were planing a maned mission to Titan and wanted to find a landing site that would get the most visible light for the longest amount of time, your first logical choice would be the dark side of ...
Wayward Astronaut's user avatar
3 votes
2 answers
5k views

Difference between luminosity, luminous flux, and radiant flux?

I've looked this up, and was wondering the differences between them. Luminosity is the total energy emitted by a source, in watts. However, I'm confused about luminous flux and radiant flux. Since ...
user15819's user avatar
0 votes
1 answer
272 views

The relation between the light of full moon and the distance between the sun and the earth

If we want the full moon to be 2 times more bright,how we should change the distance between the sun and the earth? Thanks for your help.
Rsm's user avatar
  • 1