| Carol Lakomiak | ||||
| Star:
Struve 3049 (Sigma Cassiopeiae)
Date & Time: July 8-9 2003 Seeing: 6 [see http://www.backyard-astro.com/Logs/logsreport.html Transparency: 3/10 Location of site: 45°N // Tomahawk WI, USA Site classification: Rural Temperature: 65°F dropping to 50°F Sky darkness: 4/10 (Thompson Scale) Conditions: surprisingly minimal dew; slight breeze from the North Telescope: Meade 8" f/10 LX-10 (Snoopy ) Eyepieces: 32mm, 13.8mm, 9mm, 5mm Magnification: 63x, 147x, 226x, 406x |
Lots of bright stars in
the 63x field, both components are white.
Mostly seen as an elongation at 226x, but moments of clarity brought a few definite grey splits.
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| Paolo Morini | ||||
| Star:Struve
3049 (Sigma Cassiopeiae)
Date: 17, July, 2003 Location of Site: S. Romualdo, Italy Seeing: 7 <1-10 Seeing scale (10 best)> Transparency: 8 <1-10 scale (10 best)> Site classification: Suburban-Rural Sky darkness: 5 <Limiting magnitude> Telescope: Takahashi FS-102 Mount: Vixen GP-DX Eyepieces: 4.8mm Nagler Magnifications: 170x |
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| Luis Balanzino | ||||
| Star:
Struve 3049 (Sigma Cassiopeiae)
Date & Time: July 28, 2003, 23h to 0h UT Seeing: 7 <1-10 Seeing Scale (10 best)>. Transparency: 7 <1 worst - 10 best> Location of site: Göteborg, Sweden 57°43' N, 11°58' E Site classification: Urban area with considerable light pollution Temperature: 20º C Sky darkness: 4 limited by twilight <Limiting magnitude> Moon: none Telescope: Meade ETX-90 Maksutov (90mm f/13.8) on photo tripod Eyepieces: 26mm Meade and 12,5mm TAL Plossl, 2x TAL Barlow Magnification: 48x, 100x, 200x |
Another beautiful pair in
Cas, although not easy to split with this aperture. The companion is subtle
and almost lies in the first diffraction ring. At 48x not split at all,
barely at 100x and clear
at 200x. The primary is bright and white-bluish, the companion white.
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| Luis Argüelles | ||||
| Star:Struve
3049 (Sigma Cassiopeiae)
Date: 29, July, 2003 , 23:45 -> 2:45 local time Location of Site: Sena de Luna, Spain 42.55N, 05.57W Seeing: 8->7 <1-10 Seeing scale (10 best)> Transparency: 8->7 <1-10 scale (10 best)> Other conditions: No Moon. Temperature:18ºC Altitude: 1,200 mts (3,940 ft) Site classification: Rural Sky darkness: about 5.5 Telescope: Takahashi FS-102 Mount: Vixen GP + Skysensor 2000 Eyepieces: 9mm Nagler, 5mm and 3.8mm Eudiascopics Diagonal: Zeiss prism diagonal Magnifications: 91x, 164x, 215x |
I got the split with the
9mm Nagler at 91x without excessive efforts. The field is rather dense
in stars.
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| Thomas Teague | ||||
| Star:
Struve 3049 (Sigma Cassiopeiae)
Date: 2003 August 5 (2245 UT) Location of Site: Chester, England [531108N, 025139W] Seeing: 7-5 <1-10 Seeing scale (10 best)> Transparency: <1-10 scale (10 best)> Other conditions: Temperature: Site classification: Suburban Sky darkness: Poor (astronomical twilight) Telescope: Zeiss AS-80/1200 refractor Magnifications: x48, x120, x200 |
Ambience: Warm, hazy,
after a very hot day. The buddleias are now past their best, but
I moved the telescope further from the house tonight, so as to be able
to see as much as possible of Cassiopeia above the roof. This took
me closer to our two honeysuckle climbers, almost as fragrant as the buddleias.
A gorgeous pair. The colours are subtle and difficult to describe. The primary seems to me to be a greenish pale yellow, and its companion a pale blue or even greenish hue. Not split x48, but well seen x120 and even better x200. Interestingly, Webb describes
the colours as "grn., v. bl.", although he also gives "wh., tawny," for
another date (1850). Smyth saw this pair as a miniature of Epsilon
Bootis, describing the colours as a clear and distinct "flushed white"
and "smalt blue". He reports using a central obstruction mask to
reduce the size of the diffraction pattern when measuring this pair.
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| Steve Bodin | ||||
| Star:
Struve 3049 (Sigma Cassiopeiae)
Date & Time: 4 and 5 Sep 2003 11pm to midnight Seeing: strange 5-7/10 but slow blurring Transparency: Fair Location of site: Silverdale WA, USA 47N 123W Site classification: suburb-rural Conditions: pleasant temps no wind Sky darkness: 5.4 <Limiting magnitude> Telescope: Celestron C8 Eyepieces: Video camera DX8263SL Magnification: 3x barlow app 1000x |
Nice
bright close pair of unequal stars. White primary and blue
companion. Measured at 3.3 sec at 326.4 deg PA.
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