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EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12789
Loc: Cumberland, R I , USA42N71.4W
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Faint Binocular Doubles
Stf 232 Tri 8.0-8.0/6.6” RA 0215 +31
Sttf 26, Cas 6.9-7.4/63” RA 0220 +60 1° ne of oc Stock 2
B536 Tau AB-C 8.1-8.0/39” RA 0345 +24 in the center of M45, The Pleiades
Stf 485 Cam 7.0-7.1/18.2” RA 0410 +63 in ngc 1502
Stf 737 Aur 9.1-9.4/11” RA 0536 +34 in oc M36
10 Mon B-C 9.3-9.3/21” RA 0635 -4 in ngc 2232
Stf 953 Mon 7.2-7.7/7.1” RA 0640 +9
Stf 1035 Gem 8.2-8.7/8.7” RA 0715 +23
Stf 1089 Gem 8.9-8.9/7.2” RA 0726 +15
Stf 1121 Pup 7.0-7.5/7.4” RA0735 -14 in oc M47
23 Cnc 6.3-6.3/5.1” RA 0825 +27
24 Cnc 7.0-7.8/5.8” RA 0825 +24
Stf 1663 Com 7.0-7.1/9.0” RA1220 +27
61 Oph 6.0-6.5/21” RA 1740 +3
100 Her 5.9-6.0/14.2” RA 1810 +26
Stf 2486 Cyg 6.6-6.8/8” RA 1915 +50
h 1458 Aql 8.5-8.5/16.3” RA 2000 +12
B442 Cyg 8.5-9.0/18.8” RA 2017 +37 in IC 4996
Stf 2690 Del 7.0-7.2/16.7” RA 2030 +12
Stf 2718 Del 8.0-8.0/8.5” RA 2040 +13
These are all faint (mag6+) doubles that I observe with binoculars. I selected the more equal pairs here. Most need 20x or 25x. Three needed 31x to 37x. But a half dozen or so are good for 15x and even 3 or 4 can be seen by 10x and 12x.
Sttf 26 Cas, B536 Tau, 61 Oph, 100 Her & Stf 2690 Del
can all be seen or elongated at 10x or 12x.
Add Stf 485 and 10 Mon for a 15x70 and h1458 for a 16x70.
The faintest ones get more difficult. For instance, I could barely see h 1458 (mag8.5)(16.3") with 16x70, it was not seen in 15x70. Closer should mean more difficult, but 100 Her(mag6)(14.2") can be seen at 12x50 and is even suspected in a 10x50. In this case the mag6 stars of 100Her are so much easier to see that 2 arcseconds closer is less of an issue. Fainter stars are harder to see.
23 Cnc (5.1") in BT100 at 31x see deep notch. It was seen at 37x.
24 Cnc (5.8") in BT100 at 31x seen split.
Brighter (mag5) 95 Her (6.3") is seen with Oberwerk 25x100
Stf 232 (mag8) (6.6") only elongated with Oberwerk 25x100
Stf 2690 (mag7) (16.7") is seen very nicley with 15x70s and 12x50s.
h 1458 (mag8.5) (16.3") is very difficult in 16x70s, nice in a 20x80.
100 Her (mag6) (14.2") is seen in a 12x50 and suspected in a 10x50
Enjoy.
edz
Edited by EdZ (08/13/06 06:47 PM)
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grbrown
professor emeritus
Reged: 07/09/05
Posts: 643
Loc: Ampthill, UK, 52:02N 0:30W
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EdZ,
Great stuff, many thanks! 
It is broad daylight and throwing it down with rain, also lunch has just made into the oven to heat up! 
Perhaps later.... 
--------------------
Graham
"one eye good, two eyes better...the more I look, the more I see"
BT100-45 degrees, plus 35,24,17,13,9mm Sieberts
15x80, 7x50 Steiners
12x50, 10x42, 8x20 Leica Trinovids
7x35 Minolta
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Art Fritzson
sage
Reged: 01/29/05
Posts: 315
Loc: Northern Virginia, USA
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Ed,
Thanks for the list. I suspect you have better eyes and better skies than I - I could make out a few of these with 25x100s, but I couldn't split any in my 15x70s. Will try again tonight with the 15x70s on a better mount.
Thanks for always sharing these interesting challenges!
- Art
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2006 "Bagging on a Budget" Award for Excellence in Binocular Astronomy
Garrett 25x100 IF, Oberwerk 15x70, Celestron Noble 10x50, Meade 10x50 and 8x42 Travelviews
William Optics Zenithstar II 80mm APO
Teleport 10" - an incredible all-in-one Planetary/DSO/"Grab and Go"
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Glassthrower
Vendor - Galactic Stone & Ironworks
Reged: 04/07/05
Posts: 15021
Loc: Kuiper Belt
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EdZ -
I have to admit, I am getting curious about binocular doubles - in much the same way I eventually "came around" to appreciating open clusters. If for nothing else, it seems to be a good way to determine the resolution of one's optics and the acuity of one's eyes. Both of which I am interested in.
In keeping with this thread, I Googled some information on "colorful binocular doubles" (I don't use the CN search, too many irrelevant results) and came up with this excellent thread you posted in the Binaries forum :
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/176917/
Especially interesting is the list of links to binocular doubles and colorful doubles near the bottom of the list.
Thanks for sharing...clear dark skies...
MikeG
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Michael Gilmer - Member of the Meteoritical Society & Collector of Falling Stars.
Galactic Stone & Ironworks - Specializing in exotic and rare meteorite falls.
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EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12789
Loc: Cumberland, R I , USA42N71.4W
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Mike,
you have linked to my "best of" thread in the Double star forum. Not nearly as extensive as here in the Binocular Forum.
I've added a few to the list above.
Art, for 15x70s I would whittle that list down to just these
For 15x70s
Sttf 26, Cas 6.9-7.4/63” RA 0220 +60 1° ne of oc Stock 2
B536 Tau AB-C 8.1-8.0/39” RA 0345 +24 in the center of M45, The Pleiades
Stf 485 Cam 7.0-7.1/18.2” RA 0410 +63 in ngc1502 difficult
10 Mon B-C 9.3-9.3/21” RA 0635 -4 in ngc2232
61 Oph 6.0-6.5/21” RA 1740 +3 easy
100 Her 5.9-6.0/14.2” RA 1810 +26 easy
h 1458 Aql 8.5-8.5/16.3” RA 2000 +12 very difficult
B442 Cyg 8.5-9.0/18.8” RA 2017 +37 in IC4996
Stf 2690 Del 7.0-7.2/16.7” RA 2030 +12 easy
edz
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Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
member#21
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grbrown
professor emeritus
Reged: 07/09/05
Posts: 643
Loc: Ampthill, UK, 52:02N 0:30W
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Quote:
I've added a few to the list above.
"Now how did he do that, thought I?" 
I have just made an amazing discovery - I can edit my own posts! 
--------------------
Graham
"one eye good, two eyes better...the more I look, the more I see"
BT100-45 degrees, plus 35,24,17,13,9mm Sieberts
15x80, 7x50 Steiners
12x50, 10x42, 8x20 Leica Trinovids
7x35 Minolta
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grbrown
professor emeritus
Reged: 07/09/05
Posts: 643
Loc: Ampthill, UK, 52:02N 0:30W
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Quote:
Mike,
you have linked to my "best of" thread in the Double star forum. Not nearly as extensive as here in the Binocular Forum.
edz
Found them! That was sneaky Ed, not letting on where they are!
Unfortunately when I try to copy a link to it, something goes wrong, as it won't work. I assume Ed means his "Binocular Doubles - List of 60 Targets", which now extends to about 100.
Ed, can you give us a working link please? Ta!
--------------------
Graham
"one eye good, two eyes better...the more I look, the more I see"
BT100-45 degrees, plus 35,24,17,13,9mm Sieberts
15x80, 7x50 Steiners
12x50, 10x42, 8x20 Leica Trinovids
7x35 Minolta
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EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12789
Loc: Cumberland, R I , USA42N71.4W
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Link to Best of Lists in the Double Star Forum
many double star links to lists in the DS Forum including
BINOCULAR DOUBLES
List of 60 Binocular doubles binocs 10x50 to 25x100 updated added 15 doubles
Challenging Doubles for High Power Binoculars doubles mostly from 10" to 7"
Faint Binocular Doubles mostly even, but most need 20x - 30x
Four excellent binocular doubles
Seven More excellent binocular doubles
Ten Binocular Doubles seen with 15x70s
Binocular Viewing - Doubles in Pairs and Doubles in Clusters
COLORFUL DOUBLES
Colorful Double Star Table spreadsheet 50 doubles with all info
Ten Easy Colorful Double Stars spreadsheet
Common Doubles with Significant Color Contrast
DOUBLES IN OPEN CLUSTERS
Doubles in Open Clusters and Nebula about 20 doubles
DOUBLES IN SOUTHERN SKIES
another link in the DS Forum
LINKS to Double Star Resources, posts and articles
provides links to all sorts of online doubles star catalogues and lists and links to articles in the CN Forums.
edz
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Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
member#21
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milt
sage
Reged: 09/13/04
Posts: 440
Loc: Arizona
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Thanks, Ed. I have observed a few of these and will add the rest to my list. During monsoon season in Arizona I spend more time making lists than observing. 
Milt
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grbrown
professor emeritus
Reged: 07/09/05
Posts: 643
Loc: Ampthill, UK, 52:02N 0:30W
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Ed,
Many thanks! And congratulations on producing such a comprehensive set of lists. 
Now if only I could improve my modest star-finding skills.... 
--------------------
Graham
"one eye good, two eyes better...the more I look, the more I see"
BT100-45 degrees, plus 35,24,17,13,9mm Sieberts
15x80, 7x50 Steiners
12x50, 10x42, 8x20 Leica Trinovids
7x35 Minolta
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