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Home -> Products -> Telescopes -> Astronomical Telescopes -> ASTELE™ 102MN
ASTELE
102MN (Astronomical Telescope)
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ASTELE 102MN G |
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The ASTELE 102MN is a Maksutov Newtonian with a
built-in finder (US Pat.# 6,172,806 B1). The finder objective lens is attached to the
telescope's meniscus corrector by a ultra-precision rotating housing.
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This housing allows
rotation between the telescope and the finder. Whatever eyepiece you're using at the time is
your finder eyepiece. So, you can have a low-power finder or a high-power finder
depending on which eyepiece you have in the ASTELE 102MN. When you want to view through
the telescope, you rotate the housing 180°, and vice versa for the finder. When
you're
doing photography, (35 mm or CCD), you can photograph through the finder before or after you
take an image of your subject. This will give you a wide-field perspective of the area
you're photographing.
Another great thing about the ASTELE 102MN
is its optics. The -ratio in the ASTELE 102MN
is 5.5, so,
unlike telescopes with much longer -ratios, you're able to use low magnification
(22.4 X,
2.3° with the 25 mm PlÆssl eyepiece) which produces bright images and wide fields of view
for those dim galaxies, nebulae, and very large star clusters, but the ASTELE 102MN
does
an outstanding job on the moon, planets and double stars, too. Diffraction limited optics are multi-coated. The superb optics in the ASTELE 102MN
make
it a great instrument for doing astrophotography as well, delivering pin-point images over
a 35mm format.
If you're looking for a
telescope that's easy to setup, very portable, fun to use and has superb optics,
look no further. Ideal for the beginner or the
advanced amateur.
The ASTELE 102 MN is available in two models:
- The ASTELE 102MN OTA (Optical Tube
Assembly)
- The ASTELE 102MN G (German Equatorial
Mount, shown)
The ASTELE 102MN
G comes with: slow-motion controls, setting circles, polar
axis finder, accessory tray and fully adjustable aluminum tripod.
Optical Tube and Cells are made from aircraft-grade aluminum
Photo adapter for standard cameras and lens shade are available separately.
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SPECIFICATIONS |
ASTELE
102MN OTA |
ASTELE
102MN G |
Optical
Design |
Maksutov-Newtonian |
Maksutov-Newtonian |
Optical
Diameter: |
102
mm (4") |
102
mm (4") |
Focal
Length: |
561
mm (22") |
561
mm (22") |
F-Ratio: |
f/5.5 |
f/5.5 |
Angular Field of View: |
2º |
2º |
Resolving
Power (arc sec) |
1.14 |
1.14 |
Optical
Coatings |
Multi-coated |
Multi-coated |
Limiting
Visual Magnitude (approx) |
12.5 |
12.5 |
Maximum
Practical Visual Power
• with 25 mm eyepiece
• with 10 mm eyepiece |
200
X
22 X
56 X |
200
X
22 X
56 X |
Viewfinder
(internal with 25 mm eyepiece)
• Light Diameter
• F-ratio
• Focus Length
• Magnification:
with 25 mm eyepiece
with 6.5 mm eyepiece
with 4 mm eyepiece
• Field of View |
30 mm (1.2")
1:7.7
231 mm (9.1")
9.2 X
35.5 X
57.7 X
5° |
30 mm (1.2")
1:7.7
231 mm (9.1")
9.2 X
35.5 X
57.7 X
5° |
Optical
Tube Dimensions (diameter x length) |
145
mm x 563 mm (5.7" x 22.2") |
145
mm x 563 mm (5.7" x 22.2") |
Secondary Obstruction |
41.1 % |
41.1 % |
Main Mirror
• material
• surface quality |
BK7 optical glass
/ 6 |
BK7 optical glass
/ 6 |
Meniscus
• material
• surface quality |
Pyrex glass
/ 6 |
Pyrex glass
/ 6 |
Eyepiece
Holder: |
1.25"
(31.7 mm) |
1.25"
(31.7 mm) |
Focusing
Range |
20
m (66') – infinity |
20
m (66') – infinity |
Diagonal
mirror / prism |
mirror |
mirror |
Mounting
Type |
¼
x 20 |
German-type equatorial |
Tripod
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optional |
Aluminum
w / GEM (A9025) |
Total
Telescope Net Weight: |
5
kg (11 lb) |
17.2
kg (38 lb) |
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Suggested Retail Price: |
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$799.95 |
$1,099.95 |
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