We are delighted to offer for sale this BST 1.25" Starguider 12mm 60 degree ED eyepiece.

The eyepiece uses two separate ED (Extra-low Dispersion) glass elements of different glass types in its optical system to provide exceptional colour fidelity (with astonishingly low levels of chromatic aberration) so that the true colour differences between binary star pairs and planetary surface details are easily visible. It has a  60° field of view which is very flat and it is particularly recommended with telescopes with a f/5, or greater, focal ratio. It is uniformly sharp edge-to-edge, with markedly low astigmatism. Barrel distortion is essentially non-existent, eliminating the annoying "goldfish bowl" effect of distortion of the image which is often seen in some eyepieces when panning across a star field.

Each air-to-glass surface in the Explorer eyepiece is fully multicoated for high light transmission and exceptional contrast.  This high contrast makes it a good choice for splitting close binary stars, for examining low contrast lunar and planetary detail, and for finding small and faint planetary nebulae against a truly dark sky background.  The lens edges are blackened to eliminate internal reflections and further improve contrast. As you would expect, the chrome barrel is threaded for standard 1.25" filters and has a capture ring to help reduce the chances of  accidently dropping the eyepiece out of the focuser. 

Starguider eyepieces are parfocal, minimizing the amount of refocusing needed when changing eyepieces within the series.  The eyepiece is set in a heavy rubber cladding which is grooved for easy grip.  It has a soft rubber twist up eyecup which will make it unbelievably convenient to those of us who wear spectacles.

The colour coded body rings and clear lettering print will help you find the right one in the dark. The eye lens is large in diameter (see photo) and with 13mm eye relief this makes it very comfortable and easy to look through. 

It weighs 7 ounces.

You will find the same eyepieces being sold under the "Olivon" brand in the UK for between £90.00 and £100.00.  It is also the same eyepiece as the Astrotech Paradigm being sold in the US.  We know because we have had some with both brandings in the past.

How good?  This is what one of our customers wrote about the eyepieces he bought for his Pentax spotting scope:"But let me say, and read my lips, now I have tried Zeiss and Swarovski scopes and their zoom eyepieces, but none of them gave me such easy, bright and razor-sharp image as the Pentax with the Explorer eyepiece.  In fact, I found them awkward to use with or without glasses but the 12  mm (and now the 18 mm) image instantly pops out on me." - Lars Giner  August 2010

Why buy from us?

Have a look at our feedback and you will see the common theme is that we communicate well. Before a sale, during the processing of the transaction and after you have purchased an item you have access to a telephone number, email address and a fax number all connected to a human being who knows what you have been sold. We will do our utmost to make things as smooth as possible for you - especially if you are new to astronomy or to Ebay, we all had to start at sometime. There is no such thing as a silly question, please ask knowing that we will treat you courteously and respectfully as we hope you will want to come back to us if you choose to upgrade or buy some extras for your hobby.

We will not leave you in the dark!

Skies Unlimited is the Ebay trading name of "Sky's the Limit".  Feel free to email any questions through Ebay or ring us on 01707 322696.

Please pay as soon as possible after the auction and we will get the items to you with minimum of delay. We usually get goods on the way within 24 hours (weekends excepted).

Paypal is the quickest way to pay. We accept Postal Orders, Bank drafts and Building Society cheques and deal with them like cash so your goods are dispatched as soon as we have the payment.

Personal cheques are accepted but we need a minimum of 7 working days to ensure that they have cleared the bank properly. We will advise when we have received the cheque and when we will anticipate shipping the goods to you.

Please do not send cash through the post.

All goods, unless otherwise stated, are brand new and in first class condition.

Compliments may be made at any time.

We are a small business dedicated to bring you quality goods at very low prices. We work hard to maintain a 100% satisfaction rating and in order to achieve this, should anything not be quite as you expected it to be, all we ask is that you give us a chance to put it right.

If something is faulty, we will put it right at our expense with all shipping costs refunded in full. You will not be out of pocket.

If you change your mind or ordered the wrong thing you can return it within 7 days with all packaging, inner and outer, for a refund. The cost of all shipping will be your responsibility.

These are in addition to your statutory rights.

You can phone us on 01707 322696 or send us an email to sales@skysthelimit.org.uk