M71 in Sagitta
Orion 8" f/4 Astrograph
Optics: 8" f/4 Newtonian Astrograph w/Baader MPCC Coma Corrector
Platform: Homemade GEM with Byers Starmaster Drive
Camera: Hutech Modified Canon XTi @ ISO800
Exposure: 3 x 5m
Location: Happy Jack, Arizona
Elevation: 6850 ft.
Sky: Seeing 9/10, Transparency 7/10
Outside Temperature: 35F
Processing Tools: Photoshop CS2, Images Plus 3.82
HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS
GLOBULARS OPEN CLUST PLANETARIES LINKS
areas of the Milky Way that are so dense in stars that deep images
of those regions show apparently more stars than sky in between!
The field around this rich open cluster M71 is such a field.
Easily seen in binoculars as a faint misty patch in the Arrow
constellation, zooming in reveals a rich assemblage of multi
hued stars, with little gaps between them. While there are no
galaxies visible in the background here, spend some time with
the larger image and see all the spectral types you can see.
The cluster itself is a yellow and blue rich cluster, and there
seems no definite edge to its realm.
From a technical
point of view, the Baader coma corrector is working great here,
pinpoints right to the edges with a f/3.9 parabolic mirror.