Quote:
Originally Posted by The Mekon
For discerning observers only!
I mentioned this group when discussing the main star in NGC 6193 in the observation report section. It is quite close to NGC 6193 in Ara.
Just north of the 6193 complex, is a small triangle of stars spanning around 0.4 degrees of sky. This group consists of the following double stars
HD 150040 mag 8.5/9.5 @ 2.6"
HD 150083 mag 7.4/9.4 @ 1.7"
HD 149901 mag 8.0/8.1 @ 1.4"
You will need a magnification of around 200x to resolve this group combined with a field of at least 0.4 degree, so a Nagler or Ethos type eyepiece is essential. I have found the best views were through my 132mm CFF at 184x in a 5mm Nagler yielding a .44 degree field. All the stars were distinctly split.
I first noted this group with my AP 130EDT using a 4.8 Nagler (212x). It was a real jiggle to get the three double stars in the field, a little less magnification is to be preferred along with good seeing and excellent optics.
If there is a better triple double, I would really like to know about it.
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Well you certainly have/had had some incredible scopes John.
I too prefer late nights ..not fond of 4am rises..
I really am looking forward to this John ..power , and a wide field needed simultaneously.
I may take some shots and post them , if good enough; something more of us should do. .This fabulous object looks like a top candidate for this..others just dont know what there missing out in this aspect of Astro.
And yes John.. may need Ethos or similar at 910 mm
bigjoe.