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Home  Eyepieces  Zoom & Guiding Eyepieces  Helios HyperFlex 7E 7.2 - 21.5mm Zoom Eyepiece

Helios HyperFlex 7E 7.2 - 21.5mm Zoom Eyepiece


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Helios HyperFlex 7E 7.2 - 21.5mm Zoom Eyepiece
£89.00
 Inc VAT & Warranty
Availability - In stock

20239

  • Description
  • Delivery
  • Reviews

Product Description

A high performance zoom eyepiece of top quality construction for any telescope, providing a flat field of view and crisp, clear distortion-free images. Features include a continuous focal length of 7.2mm to 21.5mm and a corresponding apparent field of view of 60°-40°. For convenience, focal length positions of 7.2, 10, 13.5 & 21.5mm are engraved on the eyepiece barrel. The zoom is super-smooth to operate and a pleasure to use. Eye relief is 15mm allowing comfortable viewing even high magnifications.

Constructed with 7 lens elements in 4 separate groups. This exotic eyepiece model features a generous sized eye-lens element and soft twist-up rubber eyecup for comfortable viewing. Fully broadband multi-coated, features blackened lens edges, internal baffling and is parfocal. Beautifully finished in high-gloss anodized aluminium with knurled rubber grips.

Threaded to accept standard 1.25" filters.
Weight approx 190g.

Delivery charge £5.95

Delivery Information

Our delivery charge is £5.95* fully insured. Orders received before 2PM normally ship that business day. We also ship direct from our suppliers all fully tracked and insured.

We use UPS, DPD, DHL, APC, DX Express, ParcelForce and Royal Mail, we do not use budget couriers, we only ship to UK mainland addresses and do not ship to forwarding agents or PO boxes.

Our Order Lookup system (see link at the top and bottom of each page) updates the order status - simply enter your order number and postcode..

*Some exceptions apply with AB, FK, HS, IV, KA, KW, PA, PH, ZE postcodes. We will quote delivery charges if applicable prior to shipping (this does not normally affect lower value items shipped by Royal Mail).

Reviews


Customer Reviews

10/10  Good quality and use all the time. Great service  Used on Sky-Watcher Star Travel Refractor 120 (f5). AFOV ranges from 40° at the 21.5mm (power 28x) giving TFOV 1.4° setting to a wider AFOV 60° when set to 7.2mm (power 83x) giving TFOV 0.7°. Compared very well to my fixed Super Plossl eyepieces. In fact, I would say even better.  (18/11/2023) Peter - Warwick


10/10  Excellent choice for Lunt LS50  Bought this for my Lunt H-alpha solar scope, as my Baader zoom wouldn’t come to focus. No obvious difference in performance to my Baader. The zoom action is smooth and continuously variable, and I like the lack of click-stops. Excellent value, superbly swift and efficient service from Harrisons.  (25/12/2020) -


10/10  Excellent quality at an extremely good price  Primarily bought this for use with my Lunt50/350 bp 400. It is identical to the Lunt eyepiece n all but name. However it is significantly cheaper. Well made, smooth operation and crystal clear viewing at all settings. Very comfortable on the eyes.   (29/03/2019) David - Swindon


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