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EdZ
Professor EdZ
   
Reged: 02/15/02
Posts: 15350
Loc: Cumberland, R I , USA42N71.4W
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Re: Follow the celestial path
08/31/09 07:34 PM
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Quote:
Ron, that's not a sketch and it's not a depiction of what it looks like visually. The scale is that of Cartes du Ciel's catalog parameters. I see an irregular smudge; it's elongated - could this be due to its close neighbours Berk 58 and NGC7788? If the sky clears in the next New Moon period, I'll attempt a sketch.
Well, I don't think so.
Be58 Achinal and Hynes list it as 5 arcmin with a Br* of mag 15. K&S observed it with a 12" scope. I've never seen it in my 6" refractor.
NGC7788 is said to have a 9th magnitude star. The cluster is about 5 arcmin i dia, of a dozen mag9 to mag 12 stars. A&H list it as 4 arcmin. That minght be seen under mag 6.5 skies. I've never seen it.
NGC7790 is said to have 10 stars of mag 11 and mag12. 30 stars that make up the dense part of the cluster are compacted in a small 4' x 2' area. Under mag 5.5 skies, I recorded it as very small at 100x in my 6" refractor.
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