SVBONY SV132 Astronomical Filter Lens 2 Inch 25nm H-Beta for Nebula Observation Astronomical Telescope Accessories
$96.99
SVBONY SV132 Astronomical Filter Lens 2 Inch 25nm H-Beta for Nebula Observation Astronomical Telescope Accessories

SVBONY SV132 Astronomical Filter Lens 2 Inch 25nm H-Beta for Nebula Observation Astronomical Telescope Accessories

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$96.99

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Product Description

Description:
  The H-Beta filter is a narrow-band filter specially designed for visual inspection. It is mainly aimed at 486nm (blue) line spectrum nebulae. It filters out the interference of other light and can improve the contrast of the nebula. The hydrogen beta line with the central wavelength of 486nm of H-Beta is suitable for observing the difficult-to-capture Horsehead Nebula and California Nebula in Orion.
Features:
1. Effectively reduce the reflected light, and the image is clear and sharp.
2. Using excellent lens grinding technology to improve the light transmittance of the filter.
3. Good hand feeling, non-slip, easy to install.
4. Suitable for observing detailed conditions of remote nebula.
Specifications:
  • Model: SV132
  • Type: H-Beta
  • Size: 2 inches
  • Substrate: B270
  • Substrate thickness: 1.85mm
  • Wavelength range: 400-700nm
  • CWL: 486nm±2nm
  • Half-height width: 25nm±2nm
  • T peak: 90%
  • Blocking: OD3 @300-1100nm
  • Clear aperture: 44mm
  • Surface quality: 60/40
  • Surface parallelism: 1/4λ
  • Parallelism: 30′
Package Included:
1 X SV132 Filter
1 X Plastic Case

More Detailed Photos:

SVBONY SV132 Astronomical Filter Lens 2 Inch 25nm H-Beta for Nebula Observation Astronomical Telescope Accessories
SVBONY SV132 Astronomical Filter Lens 2 Inch 25nm H-Beta for Nebula Observation Astronomical Telescope Accessories
SVBONY SV132 Astronomical Filter Lens 2 Inch 25nm H-Beta for Nebula Observation Astronomical Telescope Accessories
SVBONY SV132 Astronomical Filter Lens 2 Inch 25nm H-Beta for Nebula Observation Astronomical Telescope Accessories
SVBONY SV132 Astronomical Filter Lens 2 Inch 25nm H-Beta for Nebula Observation Astronomical Telescope Accessories

Additional Information

When you order from Alexnld.com, you will receive a confirmation email. Once your order is shipped, you will be emailed the tracking information for your order’s shipment. You can choose your preferred shipping method on the Order Information page during the checkout process. Alexnld.com offers 3 different international shipping methods, Airmail, Airmail registered and Expedited Shipping Service, following are delivery times:

Airmail and Airmail Registered Area Time
United States, Canada 10-25 business days
Australia, New Zealand, Singapore 10-25 business days
United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
Italy, Brazil, Russia 10-45 business days
Other countries 10-35 business days
Expedited Shipping 7-15 business days to Worldwide

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