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| Catalogue and alternative designations |
IC 1276, Palomar 7 |
| Type | Globular Cluster |
| Position | 18 10 46.6, -07 12 32 |
| Constellation | Serpens |
| Camera and Telescope | STXL6303E and 36.8 cm Ritchey Chretien |
| Focal Ratio | F9 |
| Exposure Details | A LRGB image with luminance = 120 minutes, red = 120 minutes, green = 100 minutes and blue = 110 minutes. Astrodon filters. |
| Description | IC1276
is also known as Palomar 7. The
Palomar globular clusters are a
set of clusters discovered from
the first Palomar sky survey.
There are 15 of them but it was
not realized at the time that
two appeared in other
catalogues. Palomar 9 is NGC
6717 and as noted above, Palomar
7 is also IC1276. The region of
Palomar 7 is subject to
significant interstellar
absorption and the stars are
thus strongly reddened. The
total magnitude of the cluster
is 10.3 and it is 7.1 arcminutes
in diameter. Visually, many of
these clusters are difficult but
Palomar 7 is one of the easier
ones. It is just visible in 20
cm.
|