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William T-P-111BU Pleiades 111 Astrograph f/4.8

Name: William T-P-111BU Pleiades 111 Astrograph f/4.8
Brand: William Optics
SKU: PLEJADES111
Price: 4999 EUR

The flatfield apochromat from William Optics with 528 mm focal length is optimized for astrophotography with large full-frame sensors.

Aperture 111 mm / focal length 528 mm

Fast f/4.8 aperture ratio for photographic use

7-element system with integrated field correction for sharp stars all the way to the corners

3 Super ED glass elements for an image free of false color

Internal focusing without shifting

M48 and M54 adapters for full-frame cameras are included in the scope of delivery

Bahtinov mask for precise focusing is included

Manufacturer: William Optics

Product number: PLEJADES111

EUR 4.999,00

incl. 19 % VAT (DE)

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excl. 9.95 € shipping costs (DE)

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William T-P-111BU Pleiades 111 Astrograph f/4.8

The flatfield apochromat from William Optics with 528 mm focal length is optimized for astrophotography with large full-frame sensors.

Aperture 111 mm / focal length 528 mm

Fast f/4.8 aperture ratio for photographic use

7-element system with integrated field correction for sharp stars all the way to the corners

3 Super ED glass elements for an image free of false color

Internal focusing without shifting

M48 and M54 adapters for full-frame cameras are included in the scope of delivery

Bahtinov mask for precise focusing is included

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Technical data..
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William Optics Flatfield Apo Pleiades 111 Astrograph

The Plejades 111 is one of the most modern telescopes for mobile astrophotography with large and high-resolution sensors. The 7-element design allows very good correction of the image field despite the fast focal ratio of f/4.8, allowing short exposure times and deep astrophotography in just one night. Full-frame sensors are fully illuminated.

Another advantage of the flat-field apo is the internal focusing. This means that the apo no longer has a focuser in the conventional sense. Focusing takes place internally. Nevertheless, the astrograph offers the normal rotary knob with dual speed. As with all flatfield apos, simply focus and you are automatically at the correct distance for optimum field correction.

The Pleiades 111 is optimized for astrophotography. It offers an adaptation to M48x0.75 or M54x0.75 on the camera side. This allows you to adapt your astro camera, DSLR or mirrorless system camera using normal T-adapters. A 360° rotation allows you to achieve the optimal camera position.

Type:	Flatfield APO refractor
Aperture:	111 mm
Focal length:	528 mm
Focal ratio:	f/4.8
Optics:	7-element design
APO element:	3x Super ED glass (including FPL53)
Illuminated and corrected field of view:	45 mm
Flattener:	Flat-field lens design, no flattener required
Coating:	SMC multi-layer coating
Focusing:	William Internal Focus Design (WIFD), compatible with EAF
Fine focusing:	1/10 ratio
Focusing range:	0-35 mm (ruler to 50 mm)
Tilt adapter:	yes
Rotator:	yes, with scale
Connection camera side:	M78, M48x0.75 and M54x0.75 external thread
Working distance:	55 mm from the M48 camera thread
Dew shield diameter:	155 mm
Dew shield circumference:	493 mm
Length:	645 mm with dew shield retracted and 785 mm with dew shield extended
Dovetail bar:	Losmandy style
Weight:	7.95 kg (17.53 lbs) OTA, 10.31 kg (22.73) OTA with rings, handle and dovetail bar

- Tube with tilt adapter and rotator
- M48 and M54 adapter
- Bahtinov mask
- Dust caps
- Cover for fine focusing knob
- Tube rings with handle bar
- Losmandy style dovetail bar, length 210 mm
- Soft carrying case

Manufacturer / Importeur:	Teleskop-Service Ransburg GmnH
Street:	Von-Myra-Str. 8
ZIP / City:	85599 Parsdorf
Country:	Germany
Telefon number:	+49 89 99228750
Email:	info@teleskop-service.de
Website:	www.teleskop-express.de