William Pleiades 68 APO Astrograph - 68 mm f/3.8

The Flatfield APO from William Optics with 260 mm focal length is optimized for astrophotography with large full-frame sensors.
 

Aperture 68 mm / focal length 260 mm

Fast f/3.8 aperture ratio for photographic use

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

FPL53 optics for a clean color image

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

Supplied in a practical carrying case

The Plejades 68 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/3.8, 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 68 is optimized for astrophotography. It offers an adaptation to M48x0.75 and 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:	68 mm
Focal length:	260 mm
Focal ratio:	f/3.8
Optics:	7-element design
APO element:	FPL53
Illuminated and corrected field of view:	44 mm
Flattener:	Flat-field lens design, no flattener required
Focusing:	William Internal Focus Design (WIFD), compatible with EAF
Fine focusing:	1/10 ratio
Focusing range:	0-44 mm (scale up to 55 mm)
Connection camera side:	M48x0.75 and M54x0.75 external thread
Working distance:	55 mm from the M48 camera thread
Dew shield diameter:	103 mm
Weight:	3.8 kg
Length:	365 mm with dew cap retracted and 410 mm with dew shield extended
Coating:	SMC multi-layer coating
Apertures:	yes
Dovetail bar:	Vixen/EQ5 style with 1/4" photo tripod thread

Tube

M48 and M54 adapter

Bahtinov mask

Dust caps

Cover for fine focusing knob

Tube rings with handle bar

Vixen style dovetail bar, length 210 mm

Carrying bag

Allen key set