Click for a larger image (60%)
| Catalogue and alternative designations |
M101, NGC 5457, Pinwheel galaxy |
| Type | Galaxy |
| Position | 14 03 12.6, +54 20 57 |
| Constellation | Ursa Major |
| Camera and Telescope | QSI 583 WSG, 20cm Maksutov Newtonian courtesy Dean Salman |
| Focal Ratio | F4 |
| Exposure Details | LRGB 130:180:180:130 with Astrodon series 2 filters |
| Description | This
a large (28.8' x 26.9') and
bright galaxy (magnitude
7.86) that would rank as one of
the northern hemisphere's
signature objects. It is
about 70% larger than the milky
way and quite close at about 21
million light years. There
is much interesting detail, some
of it visible with quite small
telescopes.
|