sc001 constellation chart pdf

sc001 constellation chart pdf插图

Can the SC001 chart be used to learn the constellations?

It can be used by itself in learning the constellations, although it is not quite as convenient as the star wheel. The SC001 chart only goes up to a declination of 60 degrees.

What is the difference between the SC001 and sc002 charts?

It can be used by itself in learning the constellations, although it is not quite as convenient as the star wheel. The SC001 chart only goes up to a declination of 60 degrees. The part of the sky north of declination 60d to the North Celestial Pole is covered by the accompanying SC002 chart.

How does the SC001 show the magnitudes of stars?

The SC001 shows the magnitudes of stars by the size of the dot representing the star. The correspondence between the magnitude of a star and the size of its plotted symbol is shown in the scale on the lower right edge of the chart.

What is the difference between the star wheel and SC001?

The SC001 is useful for showing the coordinates and names of a large number of stars. It can be used by itself in learning the constellations, although it is not quite as convenient as the star wheel. The SC001 chart only goes up to a declination of 60 degrees.

What declination does the SC001 chart go to?

The SC001 chart only goes up to a declination of 60 degrees. The part of the sky north of declination 60d to the North Celestial Pole is covered by the accompanying SC002 chart.

How to tell the brightness of a star?

Brightness of stars are described by magnitudes. The smaller the number, the brighter the star. The SC001 shows the magnitudes of stars by the size of the dot representing the star. The correspondence between the magnitude of a star and the size of its plotted symbol is shown in the scale on the lower right edge of the chart. Note that the brightest stars like Sirius and Betelgeuse have magnitude around 0, while the faintest ones visible to the eye have magnitudes of about 5-6. The stars in the Big Dipper are second magnitude, meaning magnitudes between 1 and 2.

What is SC001 chart?

Background: The SC001 chart is a flat, long strip of paper that resembles maps of the world. Instead of the surface of the Earth, however, the SC001 shows the celestial sphere. The two coordinates on the SC1 are the celestial coordinates of Right Ascension (RA) and Declination (Dec). The SC001 is useful for showing the coordinates and names …

How to find the meridian at 8 pm?

The location of the meridian at later times on that date can be found simply by moving the ruler 1 hour of Right Ascension to the left for each hour of time.

How many hours of RA can you see?

Since the Earth is in half darkness and half light at any point of the day and there are 24h of RA, half of the sky (and stars) are visible at any given time. Thus, you can see 12h of RA at any given time of day.

What is the magnitude of the stars in the Big Dipper?

The stars in the Big Dipper are second magnitude, meaning magnitudes between 1 and 2.

What is the line that runs through the middle of the sky?

The heavy double line running horizontally through the middle of the chart shows the Celestial Equator. This is the line that defines a value of 0deg for the Declination. The curved line that looks like a sine function from trigonometry represents the ecliptic, which is an extremely important imaginary line in astronomy. This is the path along which the Sun, Moon, and planets move.