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#1
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"Binocular Albireos"
Hi,
One of the things that gets me about binocular books is their emphasis on telescope targets. Something on the lines of "... but to really appreciate this target you will need a telescope." Granted, not many DSO are truly within binocular reach. However, three years ago I was scanning Bootes with my 9x60 when a pair of stars got me: it was nu Bootes, two close stars with a striking color difference. Something like a "binocular Albireo." I spent a great deal of time looking at them, it was very pretty. When I came home I searched for references to nu Bootes. I found not many, and none mentioning the color difference. I then went to my atlas and started looking for similar configurations, but was not so successful (my notebook says, for example, that b Gemini was not as striking). SO, I wonder if anybody has noticed nu Bootes the same way, and if there is a list somewhere of similar targets. Are there any other binocular Albireos? Best, - Cesar |
#2
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SO, I wonder if anybody has noticed nu Bootes the same way, and if
there is a list somewhere of similar targets. Are there any other binocular Albireos? Well, there is alway Albireo itself, do able with a 6x30 finder on a good night... Sorry I cannot help you otherwise... jon |
#3
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wrote:
SO, I wonder if anybody has noticed nu Bootes the same way, and if there is a list somewhere of similar targets. Are there any other binocular Albireos? One of my favorites is omicron Cygni. I stumbled across this in some large binoculars at Fremont Peak one night. 7x might not do it justice, but 10x or 15x will. Mojo -- Morris Jones * Monrovia, CA http://www.whiteoaks.com |
#5
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There is a nice one in Canis Major. I don't recall the designation
however. It may be more of a small telescope double. I don't recall if it's splitable in small binoculars or not. I've heard it refered to as "the southern Albireo". -Florian |
#6
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Are there any other
binocular Albireos? There are very few Albireo-class bino-doubles, but here's a good list to check out: http://www.carbonar.es/s33/binodoubles/Binodoubles.html SSX |
#7
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That would be h3945, I believe. What a beauty!
Best regards, Bill "Florian" wrote in message ... There is a nice one in Canis Major. I don't recall the designation however. It may be more of a small telescope double. I don't recall if it's splitable in small binoculars or not. I've heard it refered to as "the southern Albireo". -Florian |
#8
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Just found this great list (while searching for h3945):
http://dvaa.org/AData/Colored Doubles040403.pdf Still no nu Bootes (maybe too wide a pair...) - Cesar |
#9
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wrote in message roups.com...
snip [i]s a list somewhere of similar targets. Are there any other binocular Albireos? If you mean visually striking color pairs suitable for binoculars, I do not have a compiled list, only notes. My current favorite published list of bright multiple stars with magnitudes (8.0v) and separations (30"300") suitable for binoculars, is the USNO's Bright Doubles List, Appendix H in the USNO's online Astronomical Almanac - http://asa.usno.navy.mil/SecH/2005/doublestar_2005.pdf http://asa.usno.navy.mil/index.html (Main page) One minor problem with the USNO list is the authors do not cross-reference each star's Bayer name. For example, HR382 on the list is simply phi Cass. These cross-references can easily be decoded using Simbad at: http://simbad.u-strasbg.fr/sim-fid.pl The Astronomical League's Double Star list, although partially telescopic, is very useable for binoculars. Just exclude any row with a separation below 30" or 50" depending on your binocular's magnification: http://www.astroleague.org/al/obsclu.../dblstar2.html Otherwise, I build binocular double and multi-star observing lists using Phil Harrington's lists in _Touring the Universe with Binoculars_. http://www.philharrington.net/sw8.htm Maybe others here can suggest a list of pairs with wide-separation and good color contrast. - Canopus |
#10
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Still no nu Bootes (maybe too wide a pair...)
nu1 and nu2 Boo are a white and yellow-gold 5th mag. optical pair with a sep. of 10'. SSX |
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