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CELESTRON SC 279/2800 advanced VX AS-VX 11" GoTo teleskoobid
4495.00 €
Tootekood: 33000
Bränd: CELESTRON
Saadavus: Peale tellimuse vormistamist, anname teada täpse tarneaja.
- Kirjeldus
- Omadused
- Liisingukalkulaator
Toote kirjeldus inglise keeles:
Despite the long focal length of these telescopes, the OTA itself has a very short length, making the system a compact telescope which is extremely easy to transport. Light first hits an aspherically figured Schmidt corrector plate and is then thrown onto a spherical main mirror. This reflects the light back up, throwing it onto a secondary mirror which subsequently throws it back in the direction of main mirror. The light then passes through a central hole in the main mirror and into the focuser at the bottom of the OTA. Thus the system is closed and hence does not suffer from air turbulence which could degrade the image. Of course this also means that the system is optimally protected from dust. The Schmidt plate is multi-coated, ensuring bright images which do not suffer from stray light reflections.
This telescope provides a very good image, boasting high contrast and definition and provides a lot of pleasure when planetary observing. The Schmidt-Cassegrain design provides a good all-round system suitable for both observing and astrophotography and with an enormous range of optional accessories available. Using the bottom end of the OTA to look through means easy orientation. The system is also optimal for occasional terrestrial observing, e.g. birdwatching at close range. Celestron SC telescopes have an aperture ratio of around 1:10 which, so astrophotography is also very easily possible.
Main mirror focusing means a very large range of focus is made available, which allows virtually any common accessory to be used. Two pre-loaded ball bearings are used in the main mirror focus positioning mechanism in order to prevent 'mirror shift' - a typical problem when using simple bushings. The use of high quality materials such as CNC-milled aluminium components, cast steel and stainless steel guarantees extreme robustness with low weight. This means that a very heavy mount is unnecessary, not always the case for other telescope designs.
Features of these telescopes:
long focal length with short OTA
low weight aluminium OTA
high quality XLT multi-coating
closed system
pre-loaded ball bearings for low mirror shift main mirror focusing
Specifications:
Optics:
Type Reflector
Type of build Schmidt-Cassegrain
Aperture (mm) 279
Focal length (mm) 2800
Aperture ratio (f/) 10
Resolving capacity 0,41
Limit value (mag) 14
Light gathering capacity 1590
Max. useful magnification 558
Tube weight (kg) 12
Tube material Aluminium
Tube length (mm) 610
Coating Starbright XLT
Tube construction Full tube
Reflector:
secondary mirror design spherical
Secondary mirror obstruction 34
Main mirror´s construction spherical
Ventilation for central mirror no
Adjustable no
Secondary mirror diameter (mm) 95
Focuser
Type of build Internal
Connection ( to eyepiece) 2
Mount:
Mounting type Equatorial
Type of build AVX
GoTo control yes
Encoder yes
Cable-guide external
Mounting saddle Vixen & Celestron CGE
Motors Servomotors
Polar elevation setting (°) 7 - 77
Power supply 12
Load capacity (kg) 14
Weight (kg) 7,7
GoTo control:
Database 40.000
GPS optional
Tracking speeds sideral, solar and lunar
GoTo Language German, English, French, Spanish, Italian
Alignment method 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
Software Nexstar+
WIFI optional
Polar Alignment All-Star Polar Alignment
PEC correction yes
Remote Celestron PWI
Tripod:
Type Tripod
Material Steel
Tripod leg diameter (mm) 51
Accessory plate yes
Weight (kg) 8,2
Max. tripod height (cm) 1626
Min. tripod height (cm) 1118
Included accessories:
Finder scope 9x50
1.25'' eyepieces 40mm
Counterweights (kg) 3x5
Polar finder scope <p> no
Deviating optics 1.25", 90° star diagonal
Eyepiece adaptor 1,25" - 2"
Prism rail Vixen-Style
General:
Series Advanced VX
Total weight (kg) 43
Area of application:
Moon & Planets yes
Nebulae & galaxies yes
Nature Observation no
Astrophotography yes
Sun no (Only with appropriate Sun filter)
Recommended for:
Beginners yes
Advanced yes
Observatories no
Despite the long focal length of these telescopes, the OTA itself has a very short length, making the system a compact telescope which is extremely easy to transport. Light first hits an aspherically figured Schmidt corrector plate and is then thrown onto a spherical main mirror. This reflects the light back up, throwing it onto a secondary mirror which subsequently throws it back in the direction of main mirror. The light then passes through a central hole in the main mirror and into the focuser at the bottom of the OTA. Thus the system is closed and hence does not suffer from air turbulence which could degrade the image. Of course this also means that the system is optimally protected from dust. The Schmidt plate is multi-coated, ensuring bright images which do not suffer from stray light reflections.
This telescope provides a very good image, boasting high contrast and definition and provides a lot of pleasure when planetary observing. The Schmidt-Cassegrain design provides a good all-round system suitable for both observing and astrophotography and with an enormous range of optional accessories available. Using the bottom end of the OTA to look through means easy orientation. The system is also optimal for occasional terrestrial observing, e.g. birdwatching at close range. Celestron SC telescopes have an aperture ratio of around 1:10 which, so astrophotography is also very easily possible.
Main mirror focusing means a very large range of focus is made available, which allows virtually any common accessory to be used. Two pre-loaded ball bearings are used in the main mirror focus positioning mechanism in order to prevent 'mirror shift' - a typical problem when using simple bushings. The use of high quality materials such as CNC-milled aluminium components, cast steel and stainless steel guarantees extreme robustness with low weight. This means that a very heavy mount is unnecessary, not always the case for other telescope designs.
Features of these telescopes:
long focal length with short OTA
low weight aluminium OTA
high quality XLT multi-coating
closed system
pre-loaded ball bearings for low mirror shift main mirror focusing
Specifications:
Optics:
Type Reflector
Type of build Schmidt-Cassegrain
Aperture (mm) 279
Focal length (mm) 2800
Aperture ratio (f/) 10
Resolving capacity 0,41
Limit value (mag) 14
Light gathering capacity 1590
Max. useful magnification 558
Tube weight (kg) 12
Tube material Aluminium
Tube length (mm) 610
Coating Starbright XLT
Tube construction Full tube
Reflector:
secondary mirror design spherical
Secondary mirror obstruction 34
Main mirror´s construction spherical
Ventilation for central mirror no
Adjustable no
Secondary mirror diameter (mm) 95
Focuser
Type of build Internal
Connection ( to eyepiece) 2
Mount:
Mounting type Equatorial
Type of build AVX
GoTo control yes
Encoder yes
Cable-guide external
Mounting saddle Vixen & Celestron CGE
Motors Servomotors
Polar elevation setting (°) 7 - 77
Power supply 12
Load capacity (kg) 14
Weight (kg) 7,7
GoTo control:
Database 40.000
GPS optional
Tracking speeds sideral, solar and lunar
GoTo Language German, English, French, Spanish, Italian
Alignment method 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
Software Nexstar+
WIFI optional
Polar Alignment All-Star Polar Alignment
PEC correction yes
Remote Celestron PWI
Tripod:
Type Tripod
Material Steel
Tripod leg diameter (mm) 51
Accessory plate yes
Weight (kg) 8,2
Max. tripod height (cm) 1626
Min. tripod height (cm) 1118
Included accessories:
Finder scope 9x50
1.25'' eyepieces 40mm
Counterweights (kg) 3x5
Polar finder scope <p> no
Deviating optics 1.25", 90° star diagonal
Eyepiece adaptor 1,25" - 2"
Prism rail Vixen-Style
General:
Series Advanced VX
Total weight (kg) 43
Area of application:
Moon & Planets yes
Nebulae & galaxies yes
Nature Observation no
Astrophotography yes
Sun no (Only with appropriate Sun filter)
Recommended for:
Beginners yes
Advanced yes
Observatories no
