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Askar 151PHQ 151mm f/7 ED APO Quadruplet Apochromatic Refractor Telescope

£4,399.00
(Inc. 20% VAT)
Loyalty Points: 4,399
Out of stock, please contact us for an ETA

Expected end of June 2024!

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Product Code
ASKAR-151PHQ
Brand
Telescope Type
APO Quadruplet Refractor
Aperture (mm)
151 mm
Email us a question about this ProductAskar
Description

Askar 151PHQ 151mm f/7 ED APO Quadruplet Apochromatic Refractor Telescope

151PHQ is a long-focal-ratio, flatfield astrograph newly launched after 130PHQ and also the biggest refractor of Sharpstar products till now. Instead of buying extra flatteners, calculating the backfocus of the flattener, or making a tedious connection to match the distance, astrophotographers can simply equip it with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.

151PHQ has a focal ratio of f/7 and a focal length of 1057mm. The aperture is 151mm, which is the largest of Askar refractors so far. The quadruplet lens with two ED glasses offers excellent control of chromatic and other aberrations. With its self-flattening design, 151PHQ offers strong advantages in the astronomical shooting. It supports a medium frame 60mm image circle, has a fine spot diagram with tiny distortion of the peripheral stars, and its central RMS radius is less than 2 microns.

151PHQ comes with a telescopic lens hood, a high-quality CNC machined and painted tube, and attractive decorative parts. The 3.4" R&P focuser comes with M68/M54/M48 adapters, 360°rotator and a finder base. When used with the 3" 0.7 x flat field reducer, the telescope can reach a focal ratio of f/4.9 and a focal length of 740mm, effectively reducing exposure time. The multifunctional handle comes with a central slot for attaching an M6 screw with an M6 screw hole. A standard 300mm Losmandy dovetail plate, together with a sturdy double tube ring, is perfectly suited for viewing and shooting.

Specifications

Specifications: Askar 151PHQ 151mm f/7 ED APO Quadruplet Apochromatic Refractor Telescope

  • Aperture size: 151mm
  • Focal length: 1057mm
  • Focal ratio: f/7
  • Objective lens: Quadruplet air-spaced APO (including two ED glass)
  • Image circle: 60mm
  • OTA Weight: 11.6kg
  • Total Weight (Including tube ring & dovetail plate): 13.7kg

Maximum accessory connection (with the focuser fully retreated)

  • Imaging mode: 78mm (from the base of M48×0.75 male thread
  • Observing mode:119mm (from the end of1.25" eyepiece holder

Total length

  • Observing mode: 930.3mm (with the dew shield contracted) 1117.8mm (with the dew shield fully stretched)
  • Imaging mode: 976.8mm (with the dew shield contracted) 1164.3mm (with the dew shield fully stretched)

Rear-end thread type

  • M86×1-M68×1
  • M68×1-M54×0.75
  • M54×0.75-M54×0.75
  • M54×0.75-M48×0.75(built-in M48×0.75 filter thread)

Four-piece photographic end adapter

  • M48×0.75

What's in the Box

What's in the Box: Askar 151PHQ 151mm f/7 ED APO Quadruplet Apochromatic Refractor Telescope

  • 151PHQ OTA
  • Pair of tube rings
  • Handle
  • Askar Losmandy 300mm dovetail plate
  • Set of 4-piece photographic adapters
  • Aluminium case
  • Manual
Downloads
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Delivery

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In the case of special order items, the delivery time may be longer. If you have any concerns or questions about the delivery of your item, please don't hesitate to Contact Us. We are here to assist you.

Should there be any delay in dispatching your order, we will notify you to keep you informed.

Please be aware that The Widescreen Centre cannot be held responsible for any postal or third-party delays that may occur. We are committed to providing a reliable and efficient delivery service for our valued customers.

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