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FS-60C
: Small cutest baby
FS-60C:
嬌俏小子
You're most welcome
to take it home!
很歡迎您帶她回家
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FS-60C
Takahashi has just
introduced the latest addition to its FS Series fluorite apochromatic
refractors. As with all other FS refractors the FS-60C has its hard
multi-coated fluorite objective up front with a low dispersion hard
multicoated rear element.
This compact short focus [f/5.9 - 355mm] apo refractor is the perfect
eclipse telescope and with its triplet reducer [f/4.4 - 264mm] is a great
little astro camera or spotting scope.
The FS-60C is supplied with the revolutionary "palm sized"
equatorial mount "The Teegul Sky Patrol." This small, very
portable sidreal rate mount will fit in a camera bag and can be attached
to a camera tripod.
This smallest most portable mount can be taken around the world for solar
eclipse or expeditions to remote areas.
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Specification
of
FS-60C
| SPECIFICATIONS
for the FS-60C (Tube assembly only) |
| Optical
System |
60mm
Fluorite doublet |
| Coating |
Fully
Multi-Coated |
| Aperture |
60mm |
| Focal
Length |
355mm/264mm
w/reducer |
| Focal
Ratio |
F/5.9
- F/4.4 w/reducer |
| Light
Grasp |
73x |
| Resolution |
1.95" |
| Limiting
Magnitude |
10.7 |
| Image
Circle |
Ø44mm
w/reducer |
| Photo
Field |
5.0°/7.0° |
| Reducer |
Triplet
[f/4.4] |
| Tube
Diameter |
Ø80mm |
| Tube
Length |
400mm
[15.8in] |
| Weight |
1.3kg
(2.9lbs) |
| Finder
Scope |
5x25
9° |
The smallest
of flourite APO refractor on earth, good for observing sun, moon, planet,
deep sky objects and use for guiding purpose. A 5 degree FOV will
give spectacular result when in terrestrial viewing.
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FS-78 : Ultra-portable
FS-78:
超便懓
Image taken
with the FS-78
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Takahashi was the first manufacturer to make apochromatic telescopes using
a fluorite element in the objective. Since the first 90mm fluorite
apochromat was introduced in 1977, Takahashi has developed an extensive
line of apochromats using doublet and triplet objectives. The objective
lenses of these refractors use manmade fluorite crystal which is made from
natural calcium fluorite (CaF2). Now as a result of a production
breakthrough which permits the fluorite crystal to be completely hard
multi-coated, Takahashi has been able to finally re-design its fluorite FC
series to produce the FS series. The new design includes not only a
multicoated fluorite crown (front element), but also uses a low dispersion
flint (rear element) to produce a "world class" apochromat. Each
optical tube assembly is fully baffled with knife-edge baffles to produce
the highest possible contrast. The diffraction-limited optics can be used
at magnifications over 100x per inch of aperture on nights of excellent
seeing. Actually, the figure can be closer to 120x!!! The fully kulti-coated
optics and two ideally-combined elements will produce brighter images than
designs, which use three or more elements.
The FS-78 outperforms larger conventional refractors. The
diffraction-limited apochromatic optics produce crisp, high contrast
images free of secondary color over the entire field of view. Seven
internal baffles enhance the contrast and produce a very dark background.
It is highly portable and can be taken to remote sites or on solar eclipse
expeditions.
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The Standard mount
for the FS-78 is the EM-2, a highly accurate and portable mount. A
standard illuminated reticule, calculator reticule, and polar axis level
make it a simple matter to polar align within 2 arc minutes of the
celestial pole on level or tilted terrain very quickly. The optional EM-10
mount adds dual axis motor control as well as 50x sidereal set motion.
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FS-78
System chart
1. Main tube
2. Focuser unit
3. Focuser
4. Clamp, focuser
5. Knob, focuser
6. Camera angle adjuster
10. Coupling
11. Extension tube (S)
13. 50.8mm sleeve
14. Coupling (S)
18. Reducer
24. Diagonal prism (L)
29. Quintuple turret w/DP(L)
30. CA35
31. TSC Prime focus ring
32. T-mount
34. 35mm SLR camera
36. TCA-4 camera adapter
38. ø
52mm filter
41. Aux ring
42. Adapter for M645 camera
43. Mamiya M645 camera
45. Coupling DP(L)
46. Adapter, 31.7mm ocular
47. Oculars (31.7mm)
48. Oculars (50.8mm)
49. Diagonal prism (M)
70. Adapter, 50.8mm ocular
71. Extension tube (50.8mm)
75. CCD camera
80. 50.8mm sleeve (easy guider)
81. Easy-Guider (Lumicon)
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|
| Optical
System |
Fluorite
Apochromat Doublet |
| Coating |
Front
Full-Multi-Coated |
| Aperture |
78mm |
| Focal
Length |
630mm/474mm
w/ reducer |
| Focal
Ratio |
F/8
- F/6 w/ reducer |
| Light
Grasp |
124x |
| Resolution |
1.50" |
| Limiting
Magnitude |
11.2 |
| Image
Circle |
Ø42mm
w/reducer |
| Photo
Field |
5.1°
w/reducer |
| Tube
Diameter |
95mm |
| Tube
Length |
736mm |
| Weight |
2.6kg
(5.7lbs) |
| Finder
Scope |
6x30
8° |
Specifications of FS-78
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