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Description
Last month we ran a 1% reduction
promotion that proved very popular. For
June we are also running our own 1% Club – but with a difference.
Each day our prices will increase by 1%
until we reach our previous prices (as at April 30th 2024). So, it will never be as cheap as it is
today! Don’t hesitate if you want to get
a bargain.
Sky's the Limit are pleased to offer you this 1.25" Circular Polarising Filter - made for us by Optolong.
All filters are not the same.
Only Sky's the Limit:
- Test every filter sold
- Include an individual data graph for each filter (sent by email)
- Inform you of all the transmission and cut off frequencies before you buy
- Can provide a complete test result for your filter on request
Genuine UK Business
Genuine UK Stock
Polarising/polarizing filters are used to polarise unpolarised light - and then some. A polarising filter is often placed in front of the camera lens in photography in order to darken skies, manage reflections, or suppress glare from the surface of lakes or sea. Since reflections (and sky-light) tend to be at least partially linearly-polarised, a linear polariser can be used to change the balance of the light in the photograph. The rotational orientation of the filter is adjusted for the preferred artistic effect. For modern cameras, a circular polariser is typically used, this comprises firstly a linear polariser which performs the artistic function just described, followed by a quarter-wave plate which further filters the now-linearly polarised light into circularly-polarised light before entering the camera. This additional step avoids problems with auto-focus and light-metering sensors within some cameras, which otherwise may not function reliably with a simple linear polariser. (Wikipedia - anglicised)
By utilising a CPL filter, which filters out scattered light, you are able to cut through those reflections and see the detail behind it.
The CPL filter is effectively like using a 40% Moon filter that can adjust the contrast of the background sky. It can also be used with the planets in photographic images
Applying these effects to a telescope eyepiece can bring about enhanced contrast to visual astronomy by changing the effects of the background and enhancing the image in photography. Of course, there will be a degree of trial and error but I guess you are used to that.
Performance
Our filters offer performance as good as, and in some cases better than, the top brands currently on sale. The listing shows the actual performance curve for the CPL filter. You can compare this to similar curves from the top brands and we are sure you will be pleasantly impressed.
However, to ensure that you will be impressed with your purchase each filter is individually tested and issued with its own performance data sheet. This is your guarantee that you are getting exactly what you paid for.
You will receive the above graph with your purchase (less watermark). A full data sheet is available on request (Excel).
Quality
Each filter is built upon a precision polished substrate of Schott glass. The specification speaks for itself and is supported by the data sheet. The filter will retain its 'as new' optical performance for more than 10 years. It is resilient to scratches, moisture, dew, and humidity.
Even the storage package was carefully developed to take the greatest of care of your filter so that it can be a long lasting companion to you and your hobby or profession.
We can guarantee our filters - can you?
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 and email address both 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.
Payment
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.
Please do not send cash through the post.
Terms of Sale
All goods, unless otherwise stated, are brand new and in first class condition.
Compliments may be made at any time.
About Us
Sky's the Limit have been trading on Ebay since 2004.
Our aim has always been to:
- Provide quality goods at the best price possible
- To treat our customers as we would only dream of being treated ourselves
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 30 days preferably 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.
Contact Us
Please feel free to contact us through Ebay messages.
