TAKAHASHI
Regardless of its photographic qualities, the Epsilon is a first-rate wide-field observation telescope. The observation of star clusters and galaxies will give you intense pleasure due to the fineness of the stars. It proves to be a fabulous instrument for the deep sky and the search for comets.
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EPSILON-130ED REFLECTOR OTA
The catadioptric telescopes of the Epsilon series are wide-field astrographs with an hyperbolic primary mirror. A corrector is integrated in the rack-and-pinion focuser and allows to obtain a flat field with stars less than 10μm at the edge of the 44mm image circle.
The Epsilon-130D has a focal ratio of F/3.3. Its very short focal length of 430mm offers a field of view of 5.9° and is therefore ideal for imaging large areas of stars and nebulae. Its secondary mirror is mounted on a reinforced spider to avoid any flexion. The rack-and-pinion focuser is equipped with a CAA (Camera Angle Adjuster) for photographic framing.
The collimation of the Epsilon 130D is particularly easy because it does not need to be done on a star. The optical axis is represented by markings on the 2 mirrors. Takahashi has designed a simple collimation eyepiece system particularly adapted to the Epsilon allowing the adjustment of the mirrors in daylight, a big advantage compared to a classical telescope.
Regardless of its photographic qualities, the Epsilon is a first-rate wide-field observation telescope. The observation of star clusters and galaxies will give you intense pleasure due to the fineness of the stars. It proves to be a fabulous instrument for the deep sky and the search for comets. The observation of the Lagoon and Trifide nebulae in the same field is extraordinary and striking.
Καθ.Βάρος (γρ.) | 4900 |
---|---|
Οπτικός Σχεδιασμός | Κατοπτρικό Newtonian (Νευτώνιο) |
Διάμετρος (mm) | 130 |
Εστιακή Απόσταση - F (mm) | 430 |
Εστιακός Λόγος (f/) | 3.3 |
Στήριξη | Δεν περιλαμβάνεται στήριξη ή τρίποδας |
Μέγιστη Ωφέλιμη Μεγέθυνση (x) | 260 |
Characteristic | Takahashi Epsilon-130D reflector |
Optical design | Modified hyperbolic Newtonian |
Combination | Hyperbolic primary mirror + flat secondary mirror + field flattener |
Length of the optical tube assembly | 460 mm |
Diameter of the optical tube assembly | 166 mm |
At prime focus | |
Focal length | 430 mm |
Focal ratio | FD 3.3 |
Image circle diameter | 44 mm |
Metal Back Distance | 56.2 mm |
Takahashi Epsilon-130D, Spot-diagram at prime focus