About this product
Part Number: SP10853
Please note BST StarGuider ED eyepieces are occasionally branded 'Astro Essentials'.
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.
- 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
|Average Rating (3 Reviews): |
Friday, 22 January 2021 | Eric
I wanted to upgrade from the eyepieces which came with my Starwatcher 130 and plumped for the 12mm. The image is excellent and magnification up from the 25mm. The rubber surround is adjustable for eye relief and as I wear glasses I tried it in various positions. Pushed inwards it gives fairly good eye relief. When I tried to attach a smartphone I had difficulties - it wouldn't focus. Then I managed to take off the rubber and hey presto the smartphone fitted perfectly and focused well. I assume the rubber is to protect the glass but even with it off there was no contact with the phone lens and the eyepiece glass.
Upgraded eyepiece for skywatcher skyliner 200p
Tuesday, 18 December 2018 | Alex
I am a complete novice, only really starting out.
However my telescope a Skywatcher, Skyliner 200 p came to me secondhand along with an original eyepiece. The standard eyepiece gets you going, but compared to the Starguider BST you notice that firstly the overall quality just seems so much nicer. It's heavier and more solidly constructed. In comparison the original eyepiece seems a lot more cheaply made!
I have only used it for a short period, but found it's easier to work with, and with my limited experience can't really tell you anything technical about it, but I do like it, and is a vast improvement over the stock eyepiece.
I did a fair bit of research, others liked it on other forums, and recommended it. I do the same. It's good value for what it is, and not too expensive. I will buy the others I need in due course of this make!!
Sunday, 16 April 2017 | Julian
This is my workhorse EP in my 120ED Evostar pro, very good quality but more important extremely sharp views, its hard to think of an alternative that does not cost 2-3 times the price of these, i had the 18mm a while back and found it hard to tell the views apart from a Baader genuine ortho 18mm. If your looking for a decent eyepiece and cost is important give these a try
Please fill in the form below to ask a question.
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?