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Telescopes > TS Optics > Carbon Truss Tube > TS Optics Ritchey-Chretien RC 406/3250 Carbon OTA
Product no.: 47241

Ritchey-Chretien RC 406/3250 Carbon OTA

$ 9,000.00 incl. VAT, plus shipping costs
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Product description

A dream telescope for astrophotography!

The Ritchey-Chretien optics with f/8 deliver very good imaging without the use of additional correctors and also allow the use of cameras with large sensors.

The advantages:

  • Authentic RC optics with hyperbolic primary and secondary mirrors
  • Quartz primary and secondary mirrors - no temperature-dependent focus drift
  • The secondary mirror has a central mark for precise system collimation
  • 99% reflection with dielectric tempering on the primary and secondary mirrors for a bright image
  • Large, even and coma-free field without a corrector - ideal for astrophotography
  • Sufficient back focus for additional optical accessories: 233mm from the back of the tube, 127mm from the focuser's 2” adapter

Thanks to the lightweight yet extremely rigid carbon truss tube construction, the telescope is relatively lightweight. This means that you can save on the mount. The “smaller” GSO RC models are still transportable. Further advantages of this open structure include its fast cooling time and minor dew problems when compared to Schmidt-Cassegrain optics.

Ritchey-Chretiens were amongst the most expensive telescopes until recently. Thanks to GSO, we can offer you RC astrographs at affordable prices.

TS Optics is a brand of Teleskop-Service.

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.
  • We also provide an edition of the exciting astronomy magazine, “Sterne und Weltraum” with each telescope.

Specifications

Optics


Aperture (mm)
406
Aperture ratio (f/)
8
tube diameter (mm)
565
Tube weight (kg)
37
Tube construction
Truss Tube
Tube length (mm)
1114
Tube material
Carbon
Type
Reflector
Coating
Aluminium and silicon dioxide
Resolving capacity
0,28
Type of build
Ritchey-Chretien
Focal length (mm)
3250
Limit value (mag)
14,8
Light gathering capacity
3360
Max. useful magnification
812

Reflector


reflectivity
99
Secondary mirror diameter (mm)
191
Ventilation for central mirror
yes
Secondary mirror material
Quartz
Main mirror´s construction
hyperbolic
Primary mirror - Material
Quartz

Focuser


Connection ( to eyepiece)
3
Type of build
Monorail
Gear reduction
1:10 Fine movement

Mount


Mounting type
no mount
Type of build
OTA

Included accessories


Prism rail
Losmandy-Style
Eyepiece adaptor
2" - 3"

General


Series
Carbon Truss Tube

Area of application


Astrophotography
yes
Nature Observation
no

Recommended for


Beginners
no
Advanced
yes
Observatories
yes

Recommended accessories

Workshop service (1)

Astroshop Collimation/adjustment Ritchey Chrétien (RC)

$ 140.00*
Telescope accessories > Focusers (3)
Focuser

TS Optics Focuser R&P 3"

$ 475.00*
Telescope accessories > Transport & storage (4)

Omegon aluminium case, large

$ 89.00*
Telescope accessories > Other (8)
no image

TS Optics Extension tube for RC telescopes from 10" aperture, 25mm

$ 64.00*
Eyepieces (3)
Eyepiece

Omegon Ultra Wide Angle eyepiece 9mm 1,25"

$ 69.00*
Filters > Nebulae filters (5)
Filters

Omegon Filters 1.25'' deep sky filter

$ 89.00*
Filters > Other (2)
Filters

Omegon Filters Variable grey filter 1.25"

$ 34.90*
Astrophotography > Camera adaptor (3)
Projection adapter

Omegon Camera adapter 1.25"

$ 24.90*
Astrophotography > Other (4)

Omegon Easypic Universal Smartphone Adapter

$ 129.00*
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 (3)

Omegon 7-in-1 lens cleaning set

$ 19.90*
Maintenance & Cleaning > Other (2)

Omegon microfibre cleaning cloth 20cm x 20cm

$ 4.90*

*All prices include VAT plus shipping costs.

TS Optics Ritchey-Chretien RC 406/3250 Carbon OTA

Monorail focuser (a further development of the Crayford focuser)

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