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Telescoape > William Optics > FluoroStar > William Optics Refractor apochromat AP 91/540 Space Gray OTA
Nr. articol: 69899

Refractor apochromat AP 91/540 Space Gray OTA

$ 3.260,00 incl. TVA, plus costuri de livrare
prea scump?
termen scurt
gata de livrare in 3-5 saptamani + timp de tranzit

Descriere produs

Mai multe despre această serie FluoroStar...

Din pacate, descrierea acestui produs nu a fost inca tradusa in limba romana, din acest motiv veti gasi in loc o descriere in limba engleza.

The Fluorostar's lens consists of three lenses with an air gap, which use FPL-53 ED special glass by Ohara, Japan as well as and lanthanum glasses. This extremely high-quality triplet design guarantees colour purity and image clarity which leaves nothing to be desired - a true high-end instrument!

Combine this apochromat with a suitable high-quality diagonal mirror from William Optics and you can see the stars with a level of clarity which other lens rarely provide. Binary stars separate and appear sharp, Jupiter's bright bands and zones reveal striking details and Saturn's rings appear as though they are flying past in a spaceship.

With its large aperture, without obstructions by the secondary mirrors required by reflectors, the wide world of Messier objects and ambitious deep sky objects is at your feet. Anyone who has ever looked through such a high-quality apochromat has been lost to the universe forever!

In the case of astrophotography, the large image circle provides illumination, even for full-frame cameras. Combined with the Flat6AIII flattener by William Optics, it produces an faster aperture ratio and a flat image field right to the edges. The flattener can be securely screwed on to the drawtube.

The drawtube has smooth, precise 1:10 reduction, a temperature display and a large adjustment range. It effortlessly supports heavy astrophotography equipment which can also be rotated to find the best position on the sensor.

A further special feature of the William Optics apochromats is the specially calculated Bahtinov focus mask:

These new focus masks made from optical acrylic glass provide 92% transparency.

The imprinted pattern provides a diffraction structure which is around three times brighter than classic metal masks. The acrylic glass masks, therefore, produce a clearer diffraction pattern and enables focusing with the help of fainter stars.

The FLT91's Strehl value is 0.95+ and it can be used with the following cameras for astrophotography:

  • Canon EF, RF
  • Nikon F, Z
  • Sony E
  • Pentax K
  • Fuji X

This high-quality triplet apochromat is also suitable for CMOS and CCD cameras!

The lens tube has a retractable dew cap and can therefore be converted to a practical size for transportation. Furthermore, at 4.16kg, it weighs almost nothing. The FLT91 is an ideal travel telescope.

Date tehnice

Optica


Tip
Refractor
Tip constructiv
Apochromat
Apertura (mm)
91
Distanta focala (mm)
540
Raport focal (f/)
5,9
Putere de separatie
1,52
Magnitudine limita (mag)
12,3
Capacitate de colectare a luminii
170
Putere de marire utila maxima
182
design optic
Triplet
Greutate tub (kg)
4,16
diametru tub (mm)
100
Lungime tub (mm)
510
Acoperire
STM
Lungime de transport (mm)
441

Focuser


Tip constructiv
angrenaj cu cremaliera
Conexiune (spre ocular)
2
conectare filet (pe partea cu camera)
T2
Reductie
1:10 miscare fina
Rotativ
da

Montura


Tip constructiv
OTA
Tip montura
fara montura

Accesorii incluse


Optica de deviere
nu
șină prismatică
Losmandy-Style
Maner de transport
da
ajutor la focalizare
masca focalizare Bahtinov
Geanta de transport
da
Baza cautator
Vixen/Skywatcher Level

General


Serii
FluoroStar
Culoare
argintiu

Aplicaţii


Astrofotografie
da (foarte bun)
Luna & Planetele
da
Observatii in natura
nu
Nebuloase & Galaxii
da
Soare
da (doar cu filtru solar adecvat)

Recomandat pentru..


Incepatori
nu
Avansat
da
Observatoare
da

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*Toate preţurile includ TVA, plus costurile de transport maritim.

William Optics Refractor apochromat AP 91/540 Space Gray OTA

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