1. Harrison Telescopes Home PageHome
  2. LoginLogin
  3. Lookup OrdersTRACK ORDERS
  4. View Basket
    View Cart
  5. CheckoutCheckout

Altair Astro Premium CLS-CCD UV/IR Filter 1.25 Inch

Altair Astro Premium CLS-CCD UV/IR Filter 1.25 Inch

The Altair Astro CLS-CCD Filter Drastically reduces the effects of light pollution and natural moon or skyglow, permitting long exposure imaging, even in urban conditions.

Aside from the high qualty Schott German glass and top quality coatings, these filters have some additional enhancements which make them ideal for your astro imaging application.

Advanced UV/IR blocking give small star sizes even with refractor optics, and AR (Anti Reflection) coatings reduce halo effects and internal reflections for more pleasing star images.

Enhances nebulae with peak transmission in Hß 486.1nm; OIII 495.9nm; OIII 500.7nm; Ha 656.3nm wavelengths.

Artificial Light Pollution wavelengths are very effectively blocked, the primary ones being:
Hg 435.8
Hg 546.1nm
Hg 577.0nm
Hg 578.1nm
Na 589.0
Na 589.6nm
Na 615.4nm
Na 616.1nm

Can be used visually on larger aperture telescopes for very high contrast. (Do not use for Sun!).

Premium filter features:
• Batch-tested for consistency.
• High quality dichroic/dielectric coatings.
• Anti-Reflection coating to reduce star-halos - stackable.
• UV/IR block for imaging - star bloat reduction with refractors.
• Ultra-flat glass by Schott Germany.
• Precision CNC machined filter cell for strain-free mounting and freedom from tilt.

Our standard delivery charge for most of the UK is £2.95. All orders are shipped promptly, lower value items are sent Royal Mail 1st class and higher value or larger goods are shipped via reputable courier. All goods are shipped fully insured with FEDEX, UPS, DPD and Royal Mail, we do not use budget courier services, please note we can only ship to UK mainland addresses. We are not able to ship to forwarding agents or PO boxes.

Our Order Lookup system (see very top of each page for the icon and link) updates the order status in real time for you - simply by entering your order number and postcode..

We hold stock, dozens of telescopes and literally thousands of accessories that we ship out each business day, normally orders received before lunch are shipped that business day. We also direct ship from our UK suppliers, this means we have access to thousands of products that can ship fast to our customers.

Deliveries to UK mainland addresses are all shipped with fully insured premium services for £2.95, *some exceptions apply including many AB, FK, HS, IV, KA, KW, PA, PH, ZE postcodes. We will quote delivery charges to these areas where applicable prior to shipping (this does not normally affect lower value items shipped by Royal Mail).

You must inform us within one working day if the goods are lost or damaged in transit so that we can make a prompt claim against the delivery company and correct the problem. Please ensure all address details are accurate, we cannot be responsible for failed deliveries or losses arising from incorrect delivery addresses.

You agree that proof of delivery supplied by our delivery company is sufficient evidence to establish that goods have been received.

If your product is sent by Courier they will attempt delivery twice and a signature will be required. If they are unable to deliver because you are not available and after 5 days you have not contacted them to re-arrange. the goods will be returned to us and the return delivery costs may be charged to you

Altair Astro Premium CLS-CCD UV/IR Filter 1.25 Inch


Price: 49.00

The Altair Astro Premium 1.25" CLS-CCD Filter is designed for imaging applications with DSLR, CCD or CMOS cameras as a solution to controlling unwanted wavelenghts of light from artifical sources. Although primarily designed for astrophotography this filter can be used for visual observation with larger telescopes giving similar results to ultra high contrast filters.

Recently Viewed