SVBONY SV503 70/80/102ED Refractor Astronomical Telescope Travel Scope S-FPL51

Description

70mm/80mm/102mm different
Type
Refractor
Refractor
Refractor
Type of build
Doublet air spaced achromatic
Doublet air spaced achromatic
Doublet air spaced achromatic
Glass Grades
S-FPL51
S-FPL51
S-FPL51
Aperture:
70mm / 2.75-Inch
80mm
102mm / 4.01-In
Focal length
420mm
560 mm
714mm
Aperture ratio
f/6
f/7
Focal ratio
F7
Resolving capacity
1.97"
1.17"
Limit value
11.3
11.6
12.1
Light gathering capacity
100x
212x
Set the light force
130.6x
Max. Useful magnification
140x
204x
Resolution
1.5 Arcseconds
Tube weight
2.22kg
3.95kg
Tube outer diameter
88mm
121mm
Tube material
Aluminum
Aluminum
Aluminum
Coating
SMC
SMC
SMC
Surface treatment technology of mirror tube
Fine grain baking paint
Extinction bar
Plastic blade bar
Focuser Connection
2-inch
2 inch
2-inch
Focuser Gear reduction
1:10
1:10
1:10
Focuser Connecting threaded socket
M54*0.75
M54*0.75
Focuser Ring clamp
Yes
Yes
Focuser Rotating
Yes
Yes
Focuser Type of build
RAP ((rack and pinion)
RAP ((rack and pinion)
70mm/80mm/102mm identical
Focusing seat with precise scale
SV503 has precise graduations; which is ideal for astrophotography and allows precise focusing.
1:10 micro-reduction
Dual speed focusing system;The gear ratio of the dual speed 2-inch toothed focuser with a reduction ratio of 1:10; a combination of constant-speed and fine-speed ; Easy to achieve precise focus.
Telescopic sunshade
Effectively block strong light and stray light-Provide clear images.
It can also provide effective protection for the objective lens in light rain.
Dovetail plate
SV503 telescope comes with 1 pair telescope tube ring.It can be fixed to the dovetail slot by a dovetail plate.Stable connection of theodolite and tripod
.
ED objective lens
SV503 objective lens uses ultra-low dispersion lens; ED material can effectively correct the dispersion; the image is closer to the true color; thus achieving the ideal imaging effect.
SVBNOY SV503 70/420 ED Extra Low Dispersion Achromatic Refractor OTA Micro-reduction RAP Focuser for Astrophotography
Main features:
The high-quality 2-Element objective provides sharp and high-contrast images for travel and mobile use.
This 70F6 ED refractor is an ideal telescope the telescope weighs only about 2.22 kg and thanks to the retractable dew cap it is only 301mm/ 11.85in short.
The 2" RAP (rack and pinion) focuser holds heavy photographic accessories safe.
The 1:10 micro-reduction is ideal for astrophotography and allows precise focusing.
Recommended for Advanced: Telescopes for experienced observers, but also for ambitious beginners.
Area of application: Astrophotography, Moon & Planets, Nature Observation, Nebulae & galaxies.
Included accessories: 2" to 1.25" Eyepiece adapter, Dew Shield, Lens Cover, 1.25" Dust Cover, 150mm Dovetail Plate and Optics Tube Ring.
The packaging includes:
SV503 70F6 ED Astronomical Telescopes OTA
Pair Telescope Tube Ring
2" -1.25" Adapter
Dovetail Plate
Lens Cover
1.25" Dust Cover
SVBONY
SV503
White 80ED F7 Telescope OTA
Main features:
The appearance of the OTA is baked with high-end fine-grained paint, with exquisite appearance and delicate feel.
The objective lens features an S FPL-51 extra-low dispersion glass ED element, which virtually eliminates chromatic aberration. This results in the best color correction for an ED doublet lens.
The lens adopts optical processing and low polishing technology, which is carefully carved.
The whole optical lens adopts the technology of ultra-wideband multilayer coating.
The gear ratio of the dual speed 2-inch toothed focuser is 1: 10, which makes it easy to achieve accurate focus.
Metal hoop Ring + 2 inch-1.25 inch tube ring, all machined by CNC.
The packaging includes:
White 80ED F7 Telescope OTA
SVBNOY SV503 102F7 ED Extra Low Dispersion Achromatic Refractor OTA Micro-reduction RAP Focuser for Astrophotography
Main features:
The 102mm F/7 Extra-Low Dispersion refractor is portable telescope for observing and astrophotography. The very well corrected optics with moderate focal ratio and special glass offers an almost color-free image.
Ultra-wideband coating: On every glass/air surface, we use the best multi-coating to ensure maximum contrast.
Stable and precise 2" RAP focuser holds heavy photographic accessories safe, 360° rotation.
The 1:10 micro-reduction is ideal for astrophotography and allows precise focusing.
Recommended for Advanced: Telescopes for experienced observers, but also for ambitious beginners.
Area of application: Astrophotography
Included accessories: 2" to 1.25" Eyepiece adapter, Dew Shield, Lens Cover, 1.25" Dust Cover, 200mm Dovetail Plate and Optics Tube Ring.
The packaging includes:
SV503 102F7 ED Astronomical Telescopes OTA
Pair Telescope Tube Ring
2" -1.25" Adapter
Dovetail Plate
Lens Cover
1.25" Dust Cover
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