| Tim Leese | ||||
| Star: Struve 1797 Date & Time: 14 May 2005, 22:30 UT Seeing: 7 <1-10 Seeing Scale (10 best)> Transparency: <1 worst - 10 best> Location of site: Northwich, Cheshire. UK. (53° 15' N -2º 33' W). Site classification: Suburban Sky darkness: <Limiting magnitude> Conditions: Clear with a little high haze, twilight. Moon, nice phase to observe. Telescope: 200mm f/6 Newtonian reflector Mount: Vixen GP Eyepieces: 30mm Ultima, 9mm Orthoscopic, 5mm Lanthanum. Magnification: X40, X133, X240 |
30mm Ultima---------Two
faint
stars easily split using this magnification. An interesting view though
with lots of background stars. 9mm Or--------- This magnification gave a standard double star view with little else to see. PA visually estimated to be on line 160-340 degrees. |
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| Steve Bodin | ||||
| Star: Struve 1797 Date & Time: 24 May 2005, 10pm to midnight Seeing: 2/10 improving to 5/10 Transparency: fair Location of site: Silverdale Wa, USA, 47N,123W Site classification: Suburb Conditions: 55F, no wind, damp Sky darkness: limiting mag 5.6 Telescope: Celestron C8 Eyepieces: not used Imaging: DX8263SL video camera at prime focus, f10, and 3x Magnification: app. 333x and 1000x |
Equal
magnitude pair of blue stars. Measured,
21.63 sec at 156.0 deg PA. |
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| Alessandro Bertoglio | ||||
| Star: Struve 1797 Date & Time: 24 May 2005 21.58 UTC Seeing: III - IV Antoniadi Transparency: Location of site: Turin, Italy, 4504N 0742E Site classification: Urban area with strong light pollution Conditions: clear, no wind, mild temperature Moon: pretty fastidious full moon Sky darkness: 3 (limiting magnitude) Telescope: Takahashi Mewlon 300, Dall-Kirkham 300/3572 reflector Eyepieces: Televue Plossl 15 mm. Magnification: 238X Diagonal: Yes, Televue 2" Everbrite |
Easy
and wide (extimated
20"-30") pair composed by very similar and pretty bright stars. Primary
well visible white with very slight yellowish hue, secondary with the
same
colour and very slight magnitude difference (extimated about 0.1-0.2
mag.). No
rings detectable. Extimated PA 160-165 degrees. Surely not the most
interesting
double in the sky. |
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| Florent Losse | ||||
| Star: Struve 1797 Date & Time: May 25-26th, 2005 Seeing: 4/10 Transparency: very good Location of site: St Pardon de Conques, France 4433N 0012W Site classification: Rural Sky darkness: m=6+ Telescope: - visual : T115, guidescope suited with a 20mm eyepiece (G=45x) - imaging : homemade Newt T200, Barlow 3x, Audine K400 (sampling 0"43/px) Reductions: done with a future release of Reduc. Eyepieces: 20mm Magnification: 45x |
Wide equal
pair. Measured 159°1
/
20"87 |
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Stev
| Louis Marchesi | ||||
| Star: Struve 1797 Date & Time: 29 May 2005 3:12 UTC Seeing: Pickering 3 Transparency: Below Average Location of site: New London Township, PA, US (+39d45m,-75d52m) Site classification: Suburban/Rural Conditions: Clear, calm, heavy dew, 10C (50F) Sky darkness: Not determined Moon: None Telescope: TMB152 f/7.9 Apochromatic Refractor Mount: Losmandy G-11 Eyepieces: Baader Mark V Binocular Viewer with 1.25x Glaspath Compensator TMB Super Monocentrics 14mm Magnification:107x |
Both stars in this pair
were
white and easily split at this magnification. Only a single,
11th-magnitude star shared this lonely field of view with Struve 1797. |
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