12" Classical Cassegrain, Baader solar filter, Mutar II and AP Barcom.
Effective focal ratio: f:44.
Camera: Sony Alpha 7S
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Le Cassegrain Classique de 30 cm
Le Cassegrain Classique de 30 cm est le plus grand télescope opérationnel de la plate-forme d'observation.
Le télescope a été construit dans les années 1970. Maintenant c'est complètement restauré.
Nous utilisons principalement pour l'observation du ciel profond
The 30 cm Classical Cassegrain
The 30 cm Classical Cassegrain is the largest operational telescope on the observation platform.
Le telescope was originally build in the 1970's. Now it's completely restored.
We use mostly for deep sky observations
The Classical Modified Cassegrain
primary focal length : 45 inches (1143mm)
backfocus : 10 inches (254mm)
Amplification (secondary) : 3.80
diameter: 11.9 inches
Focal ratio: 11.41357
Focal length : 135 inches (3438mm) Primary F ratio: 4.017857
Spacing : 31.25 inches
Secondary radius : 41.25 inches Secondary size: 3 3/4 inches (95mm)
Field curvature: 14.46429 inches
Primary correction : 100 %
Secondary correction: 200%
Airy disk size: 0.96 arc sec (diameter)
Spot size : 17x10 (RC modified) pour supprimer la coma !
Airy/spot ratio: 1.00
Degrees off Axis: 0.2 deg. (12 arc min) primary mirror
Coma free field : 24 arc min.
The Fullerscopes MK IV with the AWR motors and the FS2 controller. Goto and autoguiding works very good..
Fantastic optics made by Paul Jones.
Testing the new Fullerscopes MK IV mount
Before installing the new Fullerscopes mount permantly in the observatory I first wanted to test the polar alignment and the backlash of the mount. Therefore I made a set of test photos of M42 and the Moon using the long focal 102mm Polarex refractor.
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