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TS-Optics CF-APO 90 mm f /6 FPL55 Triplet APO Réfracteur avec certificat

TSCFAPO90
Rating 

The apochromatic refractor with 90 mm aperture and 540 mm focal length offers highest optical and mechanical performance for astrophotography and amateur astronomy

€1,561.00
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Quantity
Generaly in Stock under | 3 - 10 days

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Description

En Bref:

  • Aperture 90 mm
  • Focal length 540 mm / focal ratio f/6
  • First-class color correction with FPL55 triplet lens
  • Internal baffles
  • High quality metal tube with CNC tube rings
  • Retractable dew shield
  • 2.5" RAP focuser - ball bearing with M63x1 connection thread for screw adaptions
  • Micro-reduction and 360° rotation of the focuser
  • Each TS-Optics CF-APO comes with a test certificate and serial number
  • Sturdy transport case, carrying handle and dovetail bar included in delivery
  • 0.8x corrector for astrophotography available - specially calculated for this telescope

TS CF-APO 90/600 mm FPL55 Triplet Apochromat

The 90 mm apo is pure in colour and bright in light and is equally suitable for visual observation and astrophotography. Thanks to the FPL55 APO element (comparable to FPL53) the image is first-class and in practice cannot be distinguished from the world-famous LZOS lenses from Russia.

The compact apo is only slightly larger than apos with 80 mm aperture, but offers a much better performance in the sky. This refractor is an ideal traveling telescope due to the retractable dew cap and a transport length of a good 400 mm.

The objective of the 90 mm apo:

The triplet lens with 90 mm aperture and 540 mm focal length fulfils the criteria of a full apo. Even at magnifications of 300x, the image is free of annoying chromatic aberrations. Even bright stars are shown on astrophotos without disturbing blue fringes.

The APO element consists of FPL55. A further special glass supports chromatic correction. The air-spaced triplet objective is fully adjustable. Each optical glass-air surface is multi-coated. The objective is in a temperature compensated, adjustable cell.

The photographic 2.5" rack&pinion focuser:

The 2.5" CNC focuser is optimized for photography and can handle a load of up to 6 kg. The adjustment of the draw tube is done by gear drive. We also offer motorized focusing for the focuser. An M63x1 internal thread is available for screwed adaptations. The focuser also offers 360° rotation for selecting the correct image section.

Astrophotography with the apochromat

To achieve the optimal imaging in the field, a corrector is needed. The corrector is screwed directly to the M63 thread of the apo. We recommend two correctors, both are suitable for cameras up to full format. The working distance from the M48 thread to the sensor is 5 5mm.

  • TSCFRED90 - 0.8x corrector
    The corrector is specially calculated for this APO. It reduces the focal length to 432 mm and improves the focal ratio to f/4.8.
  • TSFLAT25del - 1.0x corrector
    T
    he corrector provides maximum illumination. It does not change the focal length and focal ratio. The working distance from the M48 thread to the sensor is 55 mm.

Features

  • Aperture:    90 mm
  • Focal length:    540 mm
  • Focal ratio:    f/6
  • Objective:    Multicoated APO triplet lens - FPL55
  • Tube:    CNC metal tube
  • Limiting magnitude:    12.3 mag
  • Resolution:    1.29"
  • Weight tube alone:    3.54 kg
  • Weight with tube rings, dovetail bar and handle:    4.6 kg
  • Dew shield:    retractable - can be fixed with one screw
  • Focuser:    2.5" CNC focuser, 95 mm travel
  • Connections on the eyepiece side:    2", 1.25" and M63x1 female thread
  • Working distance:    148 mm from the 2" connection when the focuser tube is retracted
  • Tube length (dew cap retracted):    445 mm
  • Tube diameter:    105 mm
  • Dew cap diameter:    121 mm
  • Rear tube thread:    M102x1, female

In The Box:

  • TS 90/540 mm Apochromat metal tube
  • CNC tube rings
  • Carrying handle
  • Vixen style dovetail bar
  • Transport case
  • Valise de transport
Product Details
TSCFAPO90

Data sheet

Type
Lunette
Traitement
APOchromatique
Ouverture
94mm
Focale
540mm
Rapport F/D
6
Porte Oculaire
Crémaillière
Connexion
2", 1.25" et filetage M63
Monture
Sans
Poids (Kg)
4kg
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AsiAir compatible ZWO cable for 2 heating resistors RCA connectors

TS-Optics CF-APO 90 mm f /6 FPL55 Triplet APO Réfracteur avec certificat

The apochromatic refractor with 90 mm aperture and 540 mm focal length offers highest optical and mechanical performance for astrophotography and amateur astronomy

Write your review
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