The Epsilon series of astrographs are
specifically designed for exceptional astrophotography. Takahashi’s
proprietary optical design features a hyperbolic, concave primary mirror
with a 2 element corrector lens to eliminate spherical aberration and
coma. Compared to the conventional Schmidt camera design, the chromatic
aberration is reduced by half, even out to large viewing angles.
The E-160ED reflecting telescope has an aperture of 160 mm and a
focal length of 530 mm and provides a well corrected flat field for full
frame imaging sensors.
Thorough aberration correction is realized by by optimizing the
interaction of the hyperbolic mirror and the corrector. By using ED
glass in the corrector, a spot image within 3 µm has been achieved at
the periphery of a full frame imaging sensor. The E-160ED combines the
ease of handling of the E-130D with the high performance of the
E-180ED.
The eccentric oblique mirror and the spider vane design are used to
suppress the scatter of light similar to the current epsilon models. The
method of holding the primary mirror uses the same system as
E-180ED. The optical axis adjustment screw of the primary mirror has a
structure in which push screws are arranged on both sides of the pull
screw. The central cover can be removed to allow for rapid temperature
acclimation.
| Specifications |
| Optical Design |
|
Hyperbolic Newtonian |
| Effective aperture |
|
160 mm |
| Oblique mirror minor diameter |
|
63 mm |
| Correction lens |
|
2 elements in 2 groups (1 of which is ED glass) |
| Focal length |
|
530 mm |
| Focal ratio |
|
1: 3.3 |
| Image circle |
|
f44 mm (angle of view: 4.8°) |
| Lens barrel diameter |
|
204 mm |
| Tube length |
|
580 mm |
| Mass |
|
6.9 kg |
| Viewfinder |
|
6x30 or 7x50, Sold separately |
NOTE:
The corrector for the E-160ED cannot be used with the older E-160 OTA. Price includes OTA only.
Mount, tripod, tube holder and finder sold separately.
In the Box
Optical Tube Assembly
Visual adapter TKP69005
Visual coupling (S) TKP00103
Corrector lens TKP59580
Eyepiece adapter 31.7 TKP00101
[ITEMPRICE]