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Astronomy > Telescopes > William Optics > FluoroStar > William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
Product no.: 74017

Apochromatic refractor AP Fluorostar 120/780 Gold OTA

$ 5,200.00 incl. VAT, plus shipping costs
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Product description

More about the series FluoroStar...

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

Combine this apochromat with a suitable high-quality zenith mirror from William Optics and you can see the stars with a level of clarity which other telescopes 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!

For astrophotography, the large image circle provides illumination, even for full-frame cameras. Combined with the Flat7A flattener by William Optics, it produces a fast aperture ratio of f/5.6. The flattener can be securely screwed on to the focuser.

The focuser has smooth, precise 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 new 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 enable focusing with the help of fainter stars.

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


Type
Refractor
Type of build
Apochromat
Aperture (mm)
120
Focal length (mm)
780
Aperture ratio (f/)
6,5
Resolving capacity
1,15
Limit value (mag)
12,3
Light gathering capacity
290
Max. useful magnification
240
lens design
Triplet
Tube weight (kg)
7,2
tube diameter (mm)
126
Tube length (mm)
850
Carrying length (mm)
680
Coating
STM

Focuser


Type of build
rack and pinion
Connection ( to eyepiece)
2
Connecting threaded socket (camera-side)
T2
Free aperture (mm)
83
Gear reduction
1:10 Fine movement
Adjustment range (mm)
95
Rotating
yes
Connecting thread (telescope side)
3,3"

Mount


Type of build
OTA
Mounting type
no mount

Included accessories


Deviating optics
no
Prism rail
Losmandy-Style
Carrying handle
yes
focusing help
Bahtinov focus mask
Carry case
yes
finder base
Vixen/Skywatcher Level

General


Series
FluoroStar
Colour
gold

Area of application


Astrophotography
yes (very good)
Moon & Planets
yes
Nature Observation
no
Nebulae & galaxies
yes
Sun
no (Only with appropriate Sun filter)

Recommended for


Beginners
no
Advanced
yes
Observatories
yes

Recommended accessories

Media (2)
Star chart

Omegon Star chart Planisphere

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Outdoor (2)
Headlamp

Omegon LED headlamp

$ 13.90*
Astronomy > Telescope accessories (5)

Omegon 2'' - 1.25'' Twist-lock adapter

$ 79.00*
Astronomy > Eyepieces (3)
Eyepiece

Omegon Ultra Wide Angle eyepiece 9mm 1,25"

$ 69.00*
Astronomy > Filters (6)
Filters

Omegon Filters Moon filter 1.25"

$ 19.90*
Solar Observation (2)

Baader Sun filter foil 20 x 29 cm

$ 31.90*
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.

William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA
William Optics Apochromatic refractor AP Fluorostar 120/780 Gold OTA

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