33 Doubles Observing Projects: Struve 1406

Ambience: Low in the south, palm leaf shaped clouds are running eastward perfectly spaced and aligned!. A very strange parade, I never saw that. Surely due to different layers of wind, the stars should be sparkling but no, they are quasi perfectly steady.

Florent Losse				hfosaf@yahoo.fr
Star: Struve 1406 Date: `April 12th, 2006` Time: Seeing: `7-8 of 10`Transparency: `pretty (thin high altitude haze and Moon)`Location of site: `4433N 0012W` Site classification: `Rural` Conditions: Sky darkness: `m lim=4` Telescope: `Newton 8" at 8.70m m of EFL` `Imaging device: Audine CCD (KAF400)` `Imaging software: Pisco` `Reduction: Reduc v3.62` `Visual : 120mm refractor, 7.5 mm and 5mm eyepiecesMagnification: 50x`				`I begin the nigth with one of the difficulty of the currentproject. As the camera is recording, the couple stands out clearly on manyframes, seeing is really good or this double is far easier than expected.Two sets of measurements : 217°4 / 0"74 and 218° / 0"81` `Ambience: Low in the south, palm leaf shaped clouds are running eastward perfectly spaced and aligned!. A very strange parade, I never saw that. Surely due to different layers of wind, the stars should be sparkling but no, they are quasi perfectly steady.`

Bob Hogeveen				bob.hogeveen@hetnet.nl
Star: Struve 1406 Date: `14 April 2006` Time: `9:00pm to 11:00pm PDT` Seeing: `4 <1-10 Seeing Scale (10 best)>` Transparency: `7 <1 worst - 10 best>` Location of site: `Annen, The Netherlands (53° N 6º E).` Site classification: `Village backyard` `Moon: Full Moon low in the SE` Sky darkness: `3 <Limiting magnitude>` Telescope: `C14, Celestron 14" f/11 SCTMount: Losmandy G11` Eyepieces: `9mm Nagler type 1.Magnification:435x`				`The seeing is rather bad and most of the time only an elongated smudge is visible. But very short moments, parts of seconds, the image jumps into "sharpness" and then a nice and easy separated pair is visible. The separation is rather wide, a few times the size of the star-images, so this kind of double doesn't seem to be much of a challenge for the C14 with good seeing...`

Steve Bodin				sdbodin@hotmail.com
Star: Struve 1406 Date: `27 Apr 2006` Time: `10pm to 11pm` Seeing: 4-5`/10` Transparency: good `Location: Mattawa Wa, USA, 46.7N,119.9W` Site classification: `Rural` Conditions: Sky darkness: `limiting mag 6.5` Telescope: `Meade 16 inch LX200GPS UHTC` Eyepieces: `not usedImaging:` `Orion Starshoot CCD at f3.45 with reducer and DX8263SL video camera at f10 and f30` `Magnification:` `app. 200x ,600x, 1800x`				`Difficult target due to the magnitude difference. Blue-white primary and blue companion. Measurement. 0.78 sec at 224.5 deg PA.`