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

Description

Brand New SVBONY Telescope Filter 1.25 inches CLS Filter City Light Pollution Reduction Filter Broadband Filter Suitable for Deep Sky Visual Astronomical Photography
Manufacturer model:
5823813308
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
Description
Product Description
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
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
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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;
i
n 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
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Extinction Treatment:
Aerometal material precise CNC machining sand blasting Process black anodized finish extinction treatment to prevent reflection laser
P
ackage includes:
1
xSVBONY 1.25" CLS filter
1xsturdy plastic case
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SV305 Telescope Camera CMOS Astronomy Camera Dynamic Observation
SV25 Kids Telescope for Beginner Adult 60mm Travel Scope with Tripod
SV501 Telescope for Kids Adults Beginners 70mm Fully Coated Travel scope
Universal Cell Phone Adapter Support Eyepiece Diameter 25 to 48mm
SVBONY DN25cm Dew Heater Strip will effectively protect your lens
SV107 Camera Travel Aluminum Portable Tripod
Features 1：
with ROI
60 mm aperture
70 mm aperture
Support Eyepiece Diameter 25 to 48mm
DN25cm
Multifunctional use
Features 2：
1800s long exposure time
420 mm focal length
420 mm focal length
Support 55-100mm phone width
Connectable to SLR cameras
Features 3：
One-click white balance
two eyepieces
Messier dust-proof and plastic lens cover
Universal phone adapter
Can be used as macro photography
Shipping and Handling
Please allow 5-7 business days for the package to arrive, regardless of buyer location within the US.
We will provide an online tracking number to you once the item has been shipped.
It may take a few business days for our automated system to process the tracking number onto eBay. However, this will not affect the shipping times.
Return Policy
All our products are brand new and sealed. All items qualify for returns within 30 days of receipt.
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