BST StarGuider 60 18mm ED Eyepiece
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BST StarGuider 60 18mm ED EyepieceBST StarGuider 60 18mm ED EyepieceBST StarGuider 60 18mm ED Eyepiece

BST StarGuider 60 18mm ED Eyepiece

£47.00
  (1 Review)
✓ 2 year warranty

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In stock shipped 1-2 working days.

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About this product

Model:  bst_sg_18
Part Number:  SP10855

BST StarGuider ED eyepieces offer remarkably high performance-per-£! 

Features include two ED glass elements and fully multicoated edge-blackened optics for excellent colour, enhanced contrast, high light transmission and minimal ghosting. 

The six-element / four-group design minimises field curvature for a nice flat field, even when used with telescope f-ratios as low as f5. 

Modern twist-up eyecups, 16mm eye relief and 21mm diameter eye-lens makes them comfortable to use, even when wearing eyeglasses. 

The tactile rubber grip and milled indentations make them easy to handle in the dark and the 1.25“ nosepiece includes a safety undercut so the eyepiece is less likely to slip out of the focuser. The 1.25” nosepiece is also threaded to accept 1.25“ astronomy filters. 

FEATURES

  • Two ED glass elements minimise chromatic aberration. 
  • All air-to-glass surfaces are fully multicoated for high contrast, high light transmission and minimal ghosting. 
  • Blackened lens edges reduce internal reflections and further increase contrast.
  • Six-element / four-group design minimises field curvature for a nice flat field. 
  • 16mm eye relief (suitable for spectacle wearers). 
  • Large 21mm eye-lens diameter for comfortable observing. 
  • Convenient screw-out eye cups. 
  • Tactile rubber grip for easy handling in the dark. 
  • 1.25“ nosepiece with milled safety undercut. 
  • Accepts 1.25“ astronomy filters. 
  • Suitable for use with telescope focal-ratios f/5 and above. 

Eyepiece Field of View Simulator

Customer reviews

Average Rating (1 Review):  
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Rating (max 5):  
inexpensive upgrade from stock EP
Sunday, 18 June 2017  | 

Satisfactory upgrade from the stock SW EP's I got with my SW Explorer 150 f/5. The 18mm BST transmits significantly more light than the lower power 25mm stock EP.
There is noticeable coma in the outer edges, but only on the brightest of stars; but that is sth you get with all scopes at f/5 or faster, unless you go with the premium eyepieces.
Overall, this eyepiece is an amazing upgrade from the stock, and doesn't break the bank.

FAQ

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Q1. But aren't these the same as ........ ?

Probably... BST (BarSTa) Starguider ED eyepieces are available under a number of brands but we source them with their original factory name.

Q2. Are these noticably better than the 10 & 20mm eyepieces supplied with my telescope?

Yes. Definitely :-)

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