PrimaLuceLab PLUS 95 mm Support Clamps
PrimaLuce 95 mm collars for the FSQ-85. Check the number of collars included, the clearance, and the balance with your equipment and a compatible mount.
CHF 199.00
Capture wide fields of the deep sky with the Takahashi FSQ-85EDX: an 85 mm ED quadruplet with a 1.01× corrector included and a corrected field of 44 mm. The 1/7 focus ratio and CAA rotating collar make focusing and framing easy. Tube-only version.
CHF 3'299.00incl. Swiss VAT
Reference TQE08541
Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026
The Takahashi FSQ-85EDX is designed for wide-field imaging. Its 85 mm Petzval objective consists of four elements, including two made of S-FPL53 ED glass, and offers a native focal length of 450 mm at an F/D ratio of 5.3. This optical design produces a flat field well-suited for astrophotography. The short focal length makes it easy to frame large nebulae and expansive star fields, while keeping the telescope tube portable.
The corrector supplied with the telescope is designed for use with small-pixel sensors. With this component, the focal length reaches 455 mm at F/D 5.4, and the corrected image circle measures 44 mm. The working distance indicated on the back of the corrector is 56.2 mm; adapter rings should be selected according to the Takahashi system and your camera’s flange focal distance.
The rack has a 1:7 gear ratio for fine-tuning the focus. The included CAA rotating collar allows you to adjust the camera’s framing. The retractable dew shield reduces the tube length from 623 to 535 mm for easier storage and transport.
FSQ-85EDX optical tube with a 1.01× corrector and CAA rotating collar. For this tube-only version, the finder scope, its mount, and the mounting collar with offset plate must be purchased separately.
These accessories are sold separately. The QB0.73X reducer corresponds to a different optical configuration: it cannot be used in combination with the 1.01× corrector.
The Takahashi FSQ-85EDX is a Petzval quadruplet refractor with two S-FPL53 lenses, each with an 85 mm aperture and a focal length of 450 mm (f/5.3), designed primarily for deep-sky astrophotography. Its focal length is ideal for observing large nebulae such as the North America Nebula, the Rosette Nebula, and the Heart and Soul Nebula, as well as the entire Andromeda Galaxy and the Pleiades with their nebular structures. With a fast f/5.3 aperture, it allows for reasonable exposure times even when using narrow-band filters.
With an APS-C camera featuring 3.76 µm pixels (Sony IMX571 sensor), you get approximately 1.72″ per pixel for a field of view of 3° × 2°. With the 0.73× crop factor, this increases to 2.36″ per pixel and a field of view of 4.1° × 2.7°. The 44 mm image circle covers full-frame sensors (24 × 36 mm): a full-frame mirrorless camera will also work.
No, the 1.01× corrector is included: it extends the focal length to 455 mm at f/5.4 with a corrected image circle of 44 mm. The optional 0.73× reducer offers an alternative focal length of 330 mm at f/3.9.
56.2 mm. This length is measured from the thread to the sensor, including the rings, filter wheel, and shutter: adhering to this measurement down to the millimeter ensures that the stars remain round in the corners.
Yes, as a bonus: with an angled mirror and an eyepiece, it provides high-contrast images without false colors of the Moon, the planets, and double stars.
Here are a few accessories we've selected for this model, depending on your needs.
PrimaLuce 95 mm collars for the FSQ-85. Check the number of collars included, the clearance, and the balance with your equipment and a compatible mount.
Choose the PrimaLuce PLUS Vixen 240 mm tail if your mount has a Vixen clamp. Use the recommended PrimaLuce PLUS clamps, sold separately. Check the length, spacing, and balance. Also check the clearance around the dew shield and eyepiece holder; spacers may be necessary. An alternative to the Losmandy version.
Choose the PrimaLuce PLUS Losmandy 240 mm tail if your mount has a Losmandy clamp. Use the recommended PrimaLuce PLUS clamps, sold separately. Check the length, spacing, and balance. Also check the clearance around the dew shield and eyepiece holder; spacers may be necessary. Alternative to the Vixen version.
QB0.73× reducer for photography at shorter focal lengths, as an alternative to the included 1.01× corrector. Check the connections and focus according to the Takahashi diagram.
1.5× ED Extender for FSQ-85EDX: 680 mm at f/8. Check the assembly according to the Takahashi diagram, and do not place a filter at the eyepiece end of the extender.
100 mm heating strip for a 114 mm defogger. Check its location and clearance; a 12 V power supply or controller with an RCA connector and sufficient power must be provided separately.
Motorized eyepiece holder to replace the original one. You will need the FSQ85 adapter (PL3600271) and the appropriate camera connectors; the PrimaLuce configuration also uses the M81-to-M72 female adapter (PL3600252). Check the travel, focus adjustment, and focus range.
Motor on the original eyepiece holder; an alternative to the ESATTO, which replaces it. Check the axis, the sleeve, the clearance, and the power supply before installation.
Recommended diameter: 125 mm. Check the measurement and the mounting.
Recommended diameter: 150 mm. Check the measurement and the mounting.
