星等 [
xīng děng]
{天} magnitude
star magnitude
stellar magnitude
brightness
- 问题1:为什么星等可以代替哈勃图表中的距离?
Question 1 : Why can magnitudes be used as a substitute for distances in the Hubble diagram? - 例如找到了猎户座之后,与此图作比较,得出你能见到的极限星等。
For example, compare the Orion you seen with this map and find out the limiting magnitude. - 在天文上,本术语指的是观测的参考星的位置(或星等)与星表上的该星的位置(或星等)的差值。
In Astrometry, the term is applied to the difference between the observed position (or magnitude) of a reference star and the position (or magnitude) listed in the star catalog.