Gso Newton 200/800 f/4 Black

Codice articolo: TPM8F4

The PHOTON Newtonian reflector with 203 mm aperture and the focal ratio f/4 is a fast astrograph for astrophotography and an awesome rich-field telescope

♦ Aperture 203 mm / focal length 800 mm / focal ratio F4

• ♦ High-quality parabolic primary mirror with 94% reflectivity for a brighter image.
• ♦ Large secondary mirror with 70 mm diameter for a well-illuminated image field - also suitable for cameras with full-frame size sensors.
• ♦ Precise 2" Crayford focuser, 1:10 dual speed for accurate focusing - motor focus is optionally available.
• ♦ Adjustable primary and secondary mirror cells made of metal, useful collimation aid on the primary mirror.
• ♦ Focus position ready for observing with all popular eyepieces and for astrophotography.
• ♦ Extensive scope of delivery: 8x50 finder, tube rings, 2" extension tube for observing, dovetail bar.
• ♦ Quicker ready for photography and observing through fan for the primary mirror.

TS-PHOTON 203/800mm Advanced Newtonian for astrophotography and observing

Astrophotography is easy for you with this compact Newtonian from the TS-PHOTON series. Due to the aperture ratio of f/4, this astrograph provides pure speed and therefore short exposure times. Of course, we also offer the matching coma corrector TS SUPERFLAT. Thus this PHOTON Newtonian becomes a very good astrograph.

Immerse yourself in the world of deep-sky observing with the PHOTON 8" f/4. The large aperture and the enhanced reflectivity of 94% offer unforgettable observations beyond the solar system. Watch exciting details, like spiral arms of galaxies or fine structures in planetary nebulae.

The Newtonian is still well supported by portable mounts like the GoTo mount Celestron Advanced VX or the Skywatcher EQ5 mount. Purely visual observers can also use an altazimuth mount. You can find suitable mounts in the "recommended accessories" section.

General information and features of the TS-PHOTON Newtonian telescopes:

♦ Fast parabolic optics with outstanding contrast and very good sharpness for planetary observations.
♦ High-quality 2" Crayford focuser with 1:10 dual speed for 2" and 1.25" accessories.
♦ Focus position perfect for DSLR and other cameras.
♦ All popular 1.25" and 2" eyepieces can be used without problems.
♦ Brighter image through enhanced 94% reflectivity of primary and secondary mirror.
♦ Motor focus can be retrofitted at any time.
♦ A 0.5 mm thin stainless steel spider provides stability. Astrophotographers will envy you for the delicate and sharp spikes around bright stars.
♦ The active ventilation for the primary mirror provides for a clearly faster cooling down.
♦ Adjustable primary mirror cell and secondary cell completely made of metal.

More joy in astrophotography through optimal field correction - advisory service from Teleskop-Service
Only a good coma corrector turns this Newtonian into a true astrograph. Our recommendation is the TSGPU corrector which is perfect for this telescope. it will offer you highest sharpness in the entire field, only with the TSGPU (see accessory recommendations) this Newtonian turns into a true astrograph.

The working distance from the M48 thread is 55 mm. With a T-ring, you are automatically at the right distance for astrophotography with DSLR cameras. We can offer you suitable adaptions for your astro camera anytime within the context of our consultation.

The precise 2" crayford focuser with 1:10 micro transmission:
We offer this Newtonian telescope with a 2" Crayford style focuser with integrated 1:10 dual speed transmission. This focuser works very precise even with heavy accessories like astro cameras. With a bit of experience, you can achieve accuracies around 0.08 mm which is sufficient even for very high resolution sensors.

The focuser is fully compatible with the optional TS Motorfocus system, allowing vibration free and precise focusing for visual observing or astro-imaging.

Technical Data

Aperture: 203 mm (8")
Focal length: 800 mm
Focal ratio: f/4
Primary mirror: Parabolic primary mirror of BK7 with 94% reflection and protective quartz layer
Secondary mirror: 70 mm minor axis with 94% enhanced reflection and protective quartz layer
100% illuminated field: 25 mm - ideal for APS-C format sensors with suitable coma corrector
90% illuminated field: 38 mm - thus suitable also for larger sensors (flats recommended)
Resolution: 0.58 arc seconds
Limiting magnitude visually: 13.3 mag
Focuser: 2" Crayford focuser, dual speed, adapter to 1.25" and compression rings
Tube weight: 8.4 kg with tube rings and finder
Dimensions of the tube: Length 730 mm, diameter 230 mm
Tube material: Steel