SKY-WATCHER ESPRIT 150 ED Super APO, Инструкция по эксплуатации

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11
Specifications
Telescope specifications
Optical Design Refractor (air-spaced triplet APO)
Field Flattener Thread-on (2 lenses)
Aperture (mm) 150 mm (5.9 in)
Focal Length 1050 mm (41 in)
Focal Ratio 7
Finderscope 9x50, erect-image, right-angle
Diagonal 2" dielectric coatings
Tube Rings With 3" (D Style) dovetail plate
Highest Useful Magnification 354 x
Lowest Useful Magnification 21 x
Limiting Stellar Magnitude 13.4
Resolution (Rayleigh) 0.93 arc seconds
Resolution (Dawes) 0.77 arc seconds
Light Gathering Power (Compared to Human Eye) 459 x
Optical Coatings Fully multi-coated
Fully Illuminated Field With Field Flattener 44 mm (1.7 in)
Optical Tube Length (Retracted Dew Cap) 92 cm (36 in)
Optical Tube Weight 15 kg (32 lbs)
Telescope Visual Backfocus
∗
>170mm (6.7 in)
Field Flattener Backfocus
**
96mm (3.8 in)
Threads specifications
Rings/
Threads Focuser
Tube
Drawtube
Adatpor
Field
Flattener
DSLRl
Ext. Tube
Enlarged
T-Ring
In
Ø
n/a M74x1 F. M65x1 F. M62x1 F. M48x0.75 F.
In screw depth n/a 7 mm 7.5 mm 8.5 mm variable
Out
Ø
M74 x1 M M65x1 M. M62x1 M. M48x0.75 M Camera
Out screw depth
6 mm 6 mm 6 mm 6 mm n/a
∗
The visual back focus of the telescope is the distance from the end of the focuser tube (with 2’’ adapter
installed) to the focal plane. This means, all accessories needing 170mm back focus or less can be installed.
**
The back focus of the field flattener is the distance from the back of the field flattener (flat surface at the exit)
to the focal plane. To obtain flat wide field images, the sensor should be positioned at exactly (+-1mm) this
distance. See also detailed explanations on bottom of page 8.