Caption: Constellation Pisces (the Fish) on a sky map of a portion of the celestial sphere.

Features:

1. Pisces is a traditional zodiac constellation and one of the IAU-defined 88 constellations.

2. The International Astronomical Union (IAU) is the international organization of astronomers which has arrogated to itself the right to name things in the sky.

3. The IAU-defined 88 constellations are actually patches on the celestial sphere which tile it completely without overlap.

   Thus, all astronomical objects can be located by constellation: e.g., astronomical object X is in Pisces.

4. Pisces is crossed by the celestial equator and the ecliptic.

   Where these two great circles intersect in Pisces is the vernal equinox.

5. The Sun moving eastward on the ecliptic (which to the left on the sky map) is at the vernal equinox on approximately Mar21: the exact date varies by a day or so.

6. The event of the Sun being at the vernal equinox is also called vernal equinox in a second meaning of the expression.

7. The Sun is in Pisces in the time interval Mar12--Apr18 (38 days) (see Wikipedia: Zodiac: Table of Dates).

8. Marked galaxies on the sky map:
   1. M74 (NGC 628, type SA(s)c, RA = 01h36m41.8s, Dec = 15°47'01') is a face-on spiral galaxy in constellation Pisces. It is shown as a red dot.
   2. The Andromeda Galaxy (M31, NGC 224, type SA(s)b, RA = 00h42m43.3s, Dec = 41°16'9'') is in constellation Andromeda. It is shown as an unlabeled red oval.
   3. The Triangulum Galaxy (M33, NGC 598, type SA(s)cd, RA = 01h33m50.02s, Dec = 30°39'36.7'') in constellation Triangulum. It is shown as an unlabeled red oval.