| Rafael Barberá | ||||
| Star:
68 Tauri (Kui 17)
Date & Time: 23/11/2001, 22:30 and 23:30 UT Seeing: 6-7 <1-10 Seeing Scale (10 best)> Transparancy: --- <1-10 Seeing Scale (10 best)> Location of site: Manises (Valencia - Spain) Site classification: Urban - Suburban Sky darkness: 4.0 <Limiting magnitude> Moon : One quarter Telescope: TeleVue 85 Eyepieces: Televue Ploss 20mm, Eudascopic 15mm, Eudascopic 10mm, Eudascopic 5mm, Celestron Ultima Barlow (2x) Magnification: 30x, 40x, 60x, 120x |
No luck. At 240x I can detect
nothing. DI=98.3 is very hight for a 85mmrefractor under sky 7/10 and a
tired observer. Perhaps next night, but Ithink that this is a very hard
one for me, because the dificult is for separation (1.4") and also for
magnitude diference (4.2 and 7.5).
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| Dave Moore | ||||
| Star:
68 Tauri (Kui 17)
Date & Time: 14th November 2001, 21.36 GMT Seeing: 6 <1-10 Seeing Scale (10 best)> Transparancy: 4 <1-10 Seeing Scale (10 best)> Location of site: Charminster, Dorset, UK 51ºN, 1ºW Site classification: Suburban Sky darkness: 4.5 <Limiting magnitude> Moon: None Bootle Scale: 8 Telescope: 8" Meade LX-90 SCT f/10 Eyepiece(s): 30mm Celestron Ultima, 26mm Meade Super Plossl, 12.5mm Celestron Ultima, 2x Barlow Magnification: 67x, 167x |
No sign of any duplicity
at 67x, and only just elongated at 167x.
Putting the magnification up to 320x, reveals two stars with a very thin sliver of darkness between them. At this magnification, achieving a precise focus is difficult. Both stars are white and of slightly unequal brightness.
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| Tim Leese | ||||
| Star:
68 Tauri (Kui 17)
Date & Time: 8 December 2001, 23:50UT. Seeing: 6 <1-10 Seeing Scale (10 best)> Transparancy: <1-10 Seeing Scale (10 best)> Location of site: Northwich, Cheshire. UK. (53° 15' N -2º 33' W) Site classification: Suburban Conditions: cold with drifting mist. Sky darkness: 3.0 ( UMi ) <Limiting magnitude> Telescope: 200mm f/6 Newtonian reflector. Mount: Vixen GP. Eyepieces: 20mm Plossl, 9mm UO orthoscopic. Magnification: X60 and X133. Harshaw Scale: <1-5; 1 best> |
Sorry, I failed to
split this double and couldn't see any signs that this star was a double.
I will return to this one at a later date, sky permitting.
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| Eddy O'connor | ||||
| Star:
68 Tauri (Kui 17)
Date & Time: Monday, December 10th, 2001 10 p.m local; UT +10 Seeing: 6 <1-10 Seeing Scale (10 best)> Transparancy: 9 <1-10 Seeing Scale (10 best)> Location of site: Terara, New South Wales, Australia, Long.150º.38 ; Dec. S 34º.52. Site classification: Suburban Conditions: No Moon Temp. 17ºC. Sky darkness: --- <Limiting magnitude> Telescope: 8" Newt. F9 Eyepieces: 25mm K, 12.5 mm Ortho Magnification: 144x Harshaw Scale: 3 <1-5; 1 best> |
This star is also Delta
3 Tau. All stars in Hyades are
easily found but splitting this object was a real test of conditions. Its components are mag. 4.2 and 7.5 with a 1.4" separation. Comments: Set in an isosceles triangle of stars, 68 is not a clear split at X144. I could just glimpse separation in steady seconds but image was unstable.
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| Bob Hogeveen | ||||
| Star:
68 Tauri (Kui 17)
Date & Time: December 13, 2001 Seeing: 5 <1-10 Seeing Scale (10 best)> Transparancy: 8 <1-10 Seeing Scale (10 best)> Location of site: Annen, The Netherlands 53ºN, 6ºE Site classification: Village backyard Conditions: Cold and windy and dry Temp. --5° C Sky darkness: 5 <Limiting magnitude> Telescope: Celestron C11 Magnification: 187x, 400x Harshaw Scale: 4 <1-5; 1 best> |
Directly put 400x on this
double, thinking of several failures to split it during the last weeks.
The image was terrible, the bright A was a large spiky splash of light.
Nevertheless the 7.5 mag B was reasonably well visible on the borders of
the light of A, sometimes disappearing, sometimes showing clearly between
some starry-spikes.
Going back to 187x improved the image somewhat. Being smaller the image looked better and sharper and B was still visible from time to time. I suppose a major disco-party was going on in the 68 Tau system last night: Besides an overall white color of the stars there were all sorts of colors visible now and then in the image of the bright A...
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| Otto R. Piechowski | ||||
| Star:
68 Tauri (Kui 17)
Date & Time: December 18, 2001, 9 PM EST Seeing: 8-9 <1-10 Seeing Scale (10 best)> Transparancy: 7-8 <1-10 Seeing Scale (10 best)> Location of site: Lexington, Kentucky Site classification: Suburban Conditions: Fairly transparent sky, still Temp: 40 degrees F Sky darkness: <Limiting magnitude> Telescope: 150 mm maksutov-cassegrain Eyepieces: 7mm ortho, 5mm ortho, 4mm ortho and 2X barlow Magnification: 257x, 360x, 450x, 514x, 720x, 900x |
I was never able to see
two stars, nor any figure eight or distinct bulge.
But, several times at the
highest powers I had the sense of something "bumping" out one side.
Turning off the drive I discovered that this "bump" was following, and
thus at around 90 degrees from the primary. Returning to our 33-doubles
page, its DI is reported as 98.3 Does that count as a capture?
What a beautiful night. Saturn is an absolute postcard.
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| Bill Reinehr | ||||
| Star:
68 Tauri (Kui 17)
Date & Time: December 21, 2001 03:15 UTC Seeing: 9 <1-10 Seeing Scale (10 best)> Location of site: Pflugerville, Texas 30º N Latitude Site classification: Suburban Conditions: Very still Temp: 44º F Sky darkness: 4.1 <Limiting magnitude> Telescope: Vixen 80mm Fluorite, f/8 on Custom D altaz mount Eyepieces: 6mm Vixen LV & 2.8x Klee Barlow Magnification: 299x |
No luck at any magnification.
I thought I glimpsed the 2nd component creeping around inside the diffraction
ring but seriously doubt it. I've also seen the Easter Bunny but not on
this occasion. It was hopping rather than creeping.
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