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SVBONY Telescope Filter 1.25 inches CLS Filter City Light Pollution Reduction Filter Broadband Filter Suitable for Deep Sky Visual Astronomical Photography

Brand: SVBONY
  • Electron beam gun evaporation with Ion assisted deposition coating technology for durability and resistance to scratching;as well as stability on CWL (central wavelength) no deviation affected by temperature change
  • Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off band
  • 90% transmission of main nebula emission lines;such as Ha 656nm;OIII 496nm;500nm;SII672nm and H-beta 486nm
  • 0.1% transmission of off-band;specifically the major emission lines of artificial light pollution;such as Na 589nm;Hg 435nm and 578nm
  • Suitable for color CCD cameras and unmodified DSLR Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target
Brand: SVBONY
Size: 1.25 inch
Manufacturer: SVBONY
Part Number: FUSF9155A
Model: 5823813308
Material Type: Plastic, Optical Glass
Product Dimensions: 2.73 x 0.78 x 2.73 inches; 1.44 ounces
Isin: IWXTL69UAIJR

$56.11

$56.63
1% off
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SVBONY Telescope Filter 1.25 inches CLS Filter City Light Pollution Reduction Filter Broadband Filter Suitable for Deep Sky Visual Astronomical Photography

SVBONY Telescope Filter 1.25 inches CLS Filter City Light Pollution Reduction...

$56.11 $56.63 (1% off)

SVBONY city light suppression broadband filter is designed to improve the visibility of various deep sky objects,
By selectively reducing the transmission of wavelengths of light pollutants;specifically those produced 
by artificial lighting including mercury vapor lamps;both high and low pressure sodium 
vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere;such as sky glow
  Using:
Together with the highly transparent in main nebula 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 getting more details for both visual and photographic purpose at sub-rural area

Outstanding Features:
Coating:
Multi layers anti-reflection coating.Non cementing optical substrate coating

Filter:
Ultra-thin filter cell minimize vignetting by maximize possible

Extinction Treatment:
Aerometal material precise CNC machining sand blasting Process black anodized finish extinction treatment to prevent reflection laser 

CLS:
engraving no fading CLS with wider pass-band than UHC and hence is more favored when observing under mild to moderate light pollution

Light pollution filter do not eliminate the effects of light pollution or increase the object’s brightness;
in many cases;they increase the contrast between nebula and night sky;not brightening the nebula

Warning:
the filters of SVBONY are not designed for sun observation;don not look directly into the sun with SVBONY filter;otherwise it will burn the eyes

Specifications:
Type: city light suppression filter (CLS Filter) Material: optical glass lens;aluminum frame Thread: Standard M28.5x0.6mm

Package includes:
1xSVBONY 1.25" CLS filter
1xsturdy plastic case

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You may return most items within 30 days of delivery for a full refund.

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We'll pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.). In other cases, you will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

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WHICH CIRCUMSTANCES WE OFFER RETURND & REFUND: 

WRONG PRODUCT: 

If you discover your order is flawed please contact us Mail: support@ibspot.com. With photos of the wrong product we will providing a return shipping label. Once it is tracking we will ship a replacement a product immediately. 

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Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants),  custom products (such as special orders or personalized items), and personal care goods (such as  beauty products). We also do not accept returns for hazardous materials, flammable liquids, or  gases. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on sale items or gift cards. 

Exchanges 

The fastest way to ensure you get what you want is to return the item you have, and once the return  is accepted, make a separate purchase for the new item. 

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