This request is a little tardy as there have been a couple of other
topics that have taken center stage. Moving on here's the list of
objects for September's column - straight from the August issue. Where
should we start with Sagittarius, our September constellation selection? It is difficult to contain myself; so many
objects so little space. Rick, if
observations warrant can we do 4 pages?
One of the easier to find in this month’s selection is the open
cluster M23,
a long time personal favorite of mine.
Of the many easy star hops to get there I’d suggest a 4° hop to
the
north of northwest from M20 (the Trifid Nebula). After
soaking up all the photons you want, the next object is a
little more than 2° southwest to NGC6440 and NGC6445. These two are less than 30’ apart and will
fit in the same field of view and along with the Milky Way is a
gorgeous
view. Spend a few moments enjoying this
view. Our next two are the globular
clusters NGC6522 and NGC6528.
They are also in the same field of view and are located between
gamma-1
and gamma-2 Sagittarii. They are not
showpiece globular clusters but are visible through what is called
Baade’s
Window, a hole in the obscuring galactic clouds that permit us to peer
to the
other side of the Milky Way. These
spherical balls of stars are in the neighborhood of 60 thousand light
years
distant. Again, spend another few
moments enjoying and contemplating this view.
The next to last entry on our list is a 2° hop to NGC6520 and
B86. Check out the colored star just
across the
dark nebula. The last one is well to
the west and is found a little more the 2° north of northwest from
lambda
Sagittarii. It is the planetary nebula NGC6629. If you are doing, or contemplating doing,
the Herschel 400 list all of these objects for this month are there
with the
exception of M23. Thanks and clear skies, aj |