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

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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

Regular Price: US$75.00

Special Price US$59.99

Availability: In stock

Category: Electronics Camera & Photo Accessories Telescope & Microscope Accessories Telescope Accessories Filters

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US$149.97

1.25" CLS Light Pollution Reduction Filter for Observations of Deep-Sky

City Light Suppression Broadband Filter

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

Type: city light suppression filter (CLS Filter)

Material: optical glass lens
aluminum frame Thread: Standard M28.5x0.6mm
Glass Thickness: 1.85mm

Filter:

Ultra-thin filter cell minimize vignetting by maximize possible

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

Coating:

Multi layers anti-reflection coating.Non cementing optical substrate coating

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

Extinction Treatment:

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

Package includes:

1xSVBONY 1.25" CLS filter

1xsturdy plastic case


	SV305 Telescope Camera CMOS Astronomy Camera Dynamic Observation	SV48P Telescope	Telescope for Kids	Universal Cell Phone Adapter Support Eyepiece Diameter 25 to 48mm	SV199 Atmospheric Dispersion Corrector	SV705C Telescope Camera
Features 1:	with ROI	Deep Sky Astrophotography and Visual Astronomy	60 mm aperture	Support Eyepiece Diameter 25 to 48mm	1.25 inches	Planetary Camera for EAA and Lucky Imaging
Features 2:	1800s long exposure time	90mm Aperture	400 mm focal length	Support 55-100mm phone width	FMC	IMX485 sensor
Features 3:	One-click white balance	Double speed focuser	1.25 inches 45 degrees erect image diagonal zenith mirror	Universal phone adapter	1/4BK7 prisms	1/1.2 inches frame
Features 4:	Any Area ROI Support	Fully multil green coated lens	5x24mm Finder Scope		improve the imaging effect of planets	AR Coated

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Suitable for color CCD cameras and unmodified DSLR Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target. 0.1% transmission of off-band;specifically the major emission lines of artificial light pollution;such as Na 589nm;Hg 435nm and 578nm. 90% transmission of main nebula emission lines;such as Ha 656nm;OIII 496nm;500nm;SII672nm and H-beta 486nm. Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off band. 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.

Water Resistance Level: Not Water Resistant. Photo Filter Effect Type: Enhancing. Coating Description: Multi Coating. Photo Filter Thread Size: 1.25 Inches. Material: Optical Glass. Brand: SVBONY. Country of Origin: China. Manufacturer: SVBONY. Date First Available: January 26, 2018. Is Discontinued By Manufacturer: No. Best Sellers Rank: #8 in Telescope Filters. Customer Reviews: 4.3 out of 5 stars 188 ratings 4.3 out of 5 stars. Item model number: FUSF9155A. : B079BWD595. Item Weight: 1.44 ounces. Product Dimensions: 2.73 x 0.78 x 2.73 inches.