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Telescopes > Celestron > Advanced VX > Celestron Telescope Astrograph S 203/400 RASA 800 AVX GoTo SET
Product no.: 83308

Telescope Astrograph S 203/400 RASA 800 AVX GoTo SET

$ 5,100.00 Sale price:
$ 4,351.71 incl. VAT, plus shipping costs
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  • Portable for mobile use

Product description

More about the series Advanced VX...

Digital Schmidt camera for wide angle astrophotography!

This astrograph makes it very easy to create stunning photos with a modern DSLR or astronomical CCD camera. The new optical design has a four-lens corrector, incorporating rare earth glass, which suppresses chromatic aberrations and other problems such as coma and field curvature. Never before has an astrograph in this price range delivered such optical quality and spot size over the entire image field. The design also allows for a very low vignetting.

  • super-fast 11" f2.2 optics - sharply images APS format and is even optimized for sensor sizes up to a 70mm field diagonal.
  • extremely short exposure times - the RASA Astrograph acquires images twenty times faster than at f10! Thirty seconds at f2.2 correspond to ten minutes at f10 - tracking control is hence superfluous!
  • huge field of view - with a 620mm focal length, makes wide-angle shots a piece of cake and you and always have an overview
  • excellent focusing mechanism - new bronze bearings reduce image shift, the 10:1 FeatherTouch micro-focuser allows highly precise focusing!
  • innovative Features - quieter 12V MagLev fan reduces the cooling phase, keeps out dust and allows optimum air circulation in the OTA. Various adapters for popular camera brands are included. Back focus for the camera supplied adapters: 55mm, back focus for the front lens group: 69.26mm

RASA stands for Rowe-Ackermann-Schmidt Astrograph - Dave Rowe and Mark Ackermann are renowned optical instrument designers. Together, they hold numerous patents on their inventions. The RASA astrograph combines their expertise and experience.

Note: The RASA 800 doesn't work with regular DSLR cameras (because of a short backfocus). It is recommended to use the RASA 800 with mirrorless cameras or small dedicated CCD or CMOS astronomical cameras.

The Advanced VX is the ideal mount for mobile astrophotography using small to medium-sized telescopes! Telescopes up to around 14kg can benefit from the well-engineered functions of Celestron’s large parallactic mount. Thanks to PEC (Periodic Error Correction), the periodic error, which occurs in all mounts with classic worm gears, is strongly reduced, making long exposures possible. Additionally, you can follow objects far beyond the meridian, without instant switching being required. This means you can observe the most interesting part of the sky without interruptions. The Advanced VX also has a considerably wider base than its predecessor, which increases stability when carrying heavy loads. Improved motors have with high torque and can better compensate for small imbalances.

Experienced photographers will appreciate how easily this mount can be transported to dark observation spots. If you are just starting out with astronomy or astrophotography, the Advanced VX can help to make those first steps easier and provide you with good service for many years to come.

The mount takes Vixen-style dovetail rails or wider Celestron rails (CGE-style), but not 3” Losmandy rails.

It not only matters which telescope you buy but also where you buy it. Our additional services:

  • We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
  • We provide a copy of the 80-page "Telescope ABC" beginners handbook with every telescope.

Specifications

Optics


Type
Reflector
Type of build
Astrograph
Aperture (mm)
203
Focal length (mm)
400
Aperture ratio (f/)
2
Resolving capacity
0,68
Limit value (mag)
13,3
Light gathering capacity
843
Coating
Starbright XLT
Tube material
Aluminium
tube diameter (mm)
235
Tube length (mm)
628
Tube weight (kg)
7,9
Tube construction
Full tube

Reflector


Secondary mirror obstruction
46
Ventilation for central mirror
yes

Focuser


Gear reduction
without
Type of build
Linear Crayford
Backfocus (mm)
29 & 25

Mount


Mounting type
Equatorial
GoTo control
yes
Polar elevation setting (°)
7-77
Motors
Servomotors
Encoder
yes
Weight (kg)
8
Load capacity (kg)
14
Power supply
12
Cable-guide
external
Mounting saddle
Vixen & Celestron CGE

GoTo control


GPS
optional
Software
Nexstar+
GoTo Language
German, English, French, Spanish, Italian
Alignment method
2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
Database
40.000
Interfaces
2x Aux, USB 2.0, Autoguider
Remote
Celestron PWI
Polar Alignment
All-Star Polar Alignment

Tripod


Type
Tripod
Material
Steel
Weight (kg)
9
Max. tripod height (cm)
163
Min. tripod height (cm)
112
Tripod leg diameter (mm)
51

Included accessories


Counterweight (piece)
2
Counterweights (kg)
5
Power pack
no
cigarette lighter socket
yes
Prism rail
Losmandy-Style
Polar finder scope <p>
no
Transport cases
no
Camera adaptor
M42 & C-Mount
Battery compartment
yes
Miscellaneous
Autoguider

General


Series
Advanced VX
Total weight (kg)
21

Area of application


Astrophotography
yes (very good)
Moon & Planets
yes
Nature Observation
no
Nebulae & galaxies
yes
Sun
no

Recommended for


Beginners
no
Advanced
yes
Observatories
no

Recommended accessories

Telescope accessories > Transport & storage (8)
Carry case

Geoptik Carry case Padded bag for 8" SC and RC OTAs

$ 130.00*
Telescope accessories > Cables & power supplies (9)
Power pack

Baader 60W / 12.8V / 5A outdoor power cable

$ 74.00*
Telescope accessories > Other (9)
Heater ring

Celestron Heater ring 8"

$ 82.00*
Eyepieces (3)
Reticle eyepieces

Omegon Reticle eyepieces Illuminated crosshair eyepiece, 12.5mm

$ 89.00*
Filters > Nebulae filters (6)
Filters

Celestron Filters LPS RASA 800

$ 550.00*
Filters > Other (3)
Filters

Omegon Filters Variable grey filter 1.25"

$ 39.90*
Astrophotography > Cameras (3)
Camera

QHY Camera 268C Color

$ 2,560.00*
Astrophotography > Camera adaptor (5)
Camera adaptor

Celestron RASA 8 suitable for Canon cameras

$ 97.00*
Astrophotography > Camera mounts (4)

Omegon Easypic Universal Smartphone Adapter

$ 99.00*
Astrophotography > Other (2)
Guidescope

Omegon Guidescope module finder

$ 99.00*
Mounts & accessories > Controls (4)

Celestron WLAN-Modul SkyPortal Wi-Fi

$ 174.00*
Mounts & accessories > Other (3)

Celestron Pro vibration damper

$ 108.00*
Observatories (1)

Omegon Tent observatory

$ 189.00*
Media (2)
Star chart

Omegon Star chart Planisphere

$ 14.90*
Outdoor (2)
Headlamp

Omegon LED headlamp

$ 13.90*
Globes & Maps (1)
Continental map

Oculum Verlag Sky Quality Map Europe

$ 18.90*
Maintenance & Cleaning > Lens cleaners (4)

Celestron Professional lenses cleaning set

$ 26.90*
Maintenance & Cleaning > Other (2)

Omegon microfibre cleaning cloth 20cm x 20cm

$ 4.90*

*All prices include VAT plus shipping costs.

Celestron Telescope Astrograph S 203/400 RASA 800 AVX GoTo SET
Rear View - the telescope has been optimized for astrophotography and has no focuser.
Celestron Telescope Astrograph S 203/400 RASA 800 AVX GoTo SET
Cross-section through the light path
Celestron Telescope Astrograph S 203/400 RASA 800 AVX GoTo SET
Example of use
Celestron Telescope Astrograph S 203/400 RASA 800 AVX GoTo SET
Example image 1

Celestron Telescope Astrograph S 203/400 RASA 800 AVX GoTo SET

Example image 2

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