Apparent magnitude - Wikipedia, the free encyclopedia
|
|
The apparent magnitude ( m ) of a celestial body is a measure of its brightness as seen by an observer on Earth, normalized to the value it would have in the absence of the atmosphere. The bri...
en.wikipedia.org/wiki/Apparent_magnitude
|
|
|
The chart shows the faintest star that may be seen through a given size telescope, and estimates the total number of stars that can be seen through that telescope, and how far back into time that particular telescope can see.
|
www.vaughns-1-pagers.com/science/star-magnitude.htm
www.vaughns-1-pagers.com/science/star-magnitude.htm
|
|
|
|
In the mid-1800's astronomers made a more precise definition of magnitude, determining that the intensity difference between magnitudes was 2.512. This means that a second-mag. star appears 2.5 times as bright as a third-mag.
|
members.ncats.net/astro/reference/mag.html
|
|
|
Around 120 BC, a Greek astronomer named Hipparchus created the first known catalogue of stars. While his star catalogue does not survive today, it is believed that he included around 850 stars. ... Related resources to Star Magnitudes...
|
space.about.com/od/basics/a/starmagnitudes.htm
space.about.com/od/basics/a/starmagnitudes.htm
|
|
If it were exponential, it would still depend on distance, but the difference between the two magnitudes would be very great. To find out how bright or dim a star is compared to a star of the first magnitude, take 2.5x, x being 1 less than the magnitude of the star.
|
hs.riverdale.k12.or.us/~dthompso/math/starmag.html
hs.riverdale.k12.or.us/~dthompso/math/starmag.html
|
|
Supernova 2006aj Comparison Star Magnitudes See GCN 4898 ... All stars except for star 7 are also SDSS stars. We hope that these magnitudes are useful to the SN and GRB communities. You are welcome to use these for your research. In any publications using these magnitudes, please cite Hicken et al.
|
cfa-www.harvard.edu/oir/Research/supernova/sn2006aj_com...
cfa-www.harvard.edu/oir/Research/supernova/sn2006aj_compstars.html
|
|
NightSky Friday: Star Ratings: The Astronomers' Magnitude Scale ; By Joe Rao; SPACE.com's Night Sky Columnist; posted: ... Sixth magnitude stars shine 1/100 as bright as first magnitude stars -- a difference of five magnitudes corresponds to a difference in brightness of a factor of 100. The scale is logarithmic.
|
www.space.com/spacewatch/star_magnitudes_040213.html
www.space.com/spacewatch/star_magnitudes_040213.html
|
|
A text file summarising IZYJHKL'M' standard star magnitudes is available. ... The publication, JHK Observations of Faint Standard Stars in the Mauna Kea Near-Infrared Photometric System , details the standard star magnitudes and comparisons with other photometric systems. These data include results on some...
|
www.jach.hawaii.edu/UKIRT/astronomy/calib/phot_cal/2002...
www.jach.hawaii.edu/UKIRT/astronomy/calib/phot_cal/2002_mags.html
|
|
Absolute magnitudes are how bright a star would appear from some standard distance, arbitrarily set as 10 parsecs or about 32.6 light years. Stars can be as bright as absolute magnitude -8 and as faint as absolute magnitude +16 or fainter.
|
www.astro.wisc.edu/~dolan/constellations/extra/brightes...
www.astro.wisc.edu/~dolan/constellations/extra/brightest.html
|
|
