Optolong L-Pro Deep Sky Light Pollution Filter - 1.25"
Optolong L-Pro Deep Sky Light Pollution Filter - 1.25"
Optolong L-Pro Deep Sky Light Pollution Filter - 1.25"
Optolong L-Pro Deep Sky Light Pollution Filter - 1.25"
Optolong L-Pro Deep Sky Light Pollution Filter - 1.25"
Optolong L-Pro Deep Sky Light Pollution Filter - 1.25"
Optolong L-Pro Deep Sky Light Pollution Filter - 1.25"

Optolong L-Pro Deep Sky Light Pollution Filter - 1.25"

0310155

Regular price€171,19
/
incl. VAT

  • Express delivery within the EU
  • Item Available, ready to ship
  • Item Available, shipping soon
The L-Pro Filter is the best choice for light pollution suppression and allows astrophotos to be taken of broadband emission objects such as galaxies, reflection nebulae and globular star clusters.

The relentless spread or urbanization and its associated light pollution have become a big problem for all amateur astro photographers around the world. One solution is to purchase a Mono camera but this can be expensive and might also require the purchase of several types of narrowband filters and a filter wheel.

L-Pro is a multi-bandpass filter which offers much better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro remains the best choice for viewing or photographing broadband targets in light polluted areas.

L-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects by selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lights such as mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent main emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural areas with heavy light pollution.

L-Pro has a multiple anti-reflective coating on the optical substrate and uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes.

IMPORTANT WARNING: These nebula filters are NOT designed for observation of the Sun. Do not use this filter to look at the Sun as serious eye damage, blindness as well as damage to equipment may result.

Features:
  • Professional visual and photographic filter for astronomy
  • Improves deep sky nebula constellation photography
  • Best choice for broadband light pollution suppression
  • Filter diameter: 1.25 inch / 31.7mm
  • Connecting thread: M28.5 x 0.6mm (Eyepiece thread 1.25 inch)
  • Selected optical glass material
  • Spectrum: 380-750nm
  • Surface Quality: 60/40 (Refer to MIL-O-13830)
  • Fine-optically polished glass to ensure accurate 1/4 wavefront and highest parallelism over the both surfaces
  • High transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm&500nm, SII 672nm and H-beta 486nm)
  • Precision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm)

Whats included:
  1. L-Pro filter (1.25")
  2. Dust protection box

 

Please Note: The estimated delivery times below are calculated from when your order is dispatched (eg. when you receive your 'Order completed' email and tracking number). If an item is a special order item (eg. its not in stock but we can order it in) then it will usually require an additional 1 - 2 days before being dispatched. 

All orders are shipped using our reputable courier partners DHL to ensure your items arrive safely and promptly. All items are fully tracked and we currently only ship within the EU.

REPUBLIC OF IRELAND


 

Est. Delivery Time:
5 - 7 Working days after dispatch

Standard Tracked Delivery:
Republic of Ireland Nationwide: from €8.95 upwards

Note: The exact shipping charge will depend on the size of your order and will be calculated at the checkout. Some large and bulky Telescopes may also be shipped to you directly from our Manufacturer. This is a special agreement we have with our suppliers to ensure our customers enjoy the cheapest possible shipping rates for large bulky Telescopes.

For some very large Telescopes over 45kg, it may require special handling instructions and you will be asked at the checkout to contact us for a special delivery quotation.


Mainland EUROPE (EU)



Est. Delivery Time:
3 - 5 Working days after dispatch

Standard Tracked Delivery:
Mainland Europe: from €4.95 upwards

Note: The exact shipping charge will depend on the size of your order and will be calculated at the checkout. Some large and bulky Telescopes may also be shipped to you directly from our Manufacturer. This is a special agreement we have with our suppliers to ensure our customers enjoy the cheapest possible shipping rates for large bulky Telescopes.

For some very large Telescopes over 45kg, it may require special handling instructions and you will be asked at the checkout to contact us for a special delivery quotation.

EU Additional Info:

If your country is not listed below please contact us for a specialised quote.

Standard EU Delivery Regions:
Germany, France, Belgium, Poland, Luxembourg, Netherlands, Denmark, Portugal, Spain, Austria, Italy, Poland, Croatia, Malta, Greece, Monaco.

 



IMPORTANT
: It is essential when placing an order, that you include a valid 'Contact Telephone Number' for the delivery address or for the person receiving the item. This is necessary to avoid potential delays, return delivery costs or problems with your delivery.

Shipping Disclaimer: All of our parcels are sent via a 3rd party registered courier service to ensure safe and prompt delivery. While we endeavor to ensure that all parcels are delivered within the specified time frame, 'Horizon Astronomy' can not be held responsible for delays due to adverse weather conditions or other courier/technical related issues outside of our control.

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