Visible Bandpass Filter 550nm For Astronomy

Visible bandpass filter 550nm is an optical filter that selectively transmits light within a specific range of wavelengths centered at 550nm while blocking light outside that range. They are commonly used in various applications such as fluorescence microscopy, spectrophotometry, and colorimetry.

 

Our filters are typically made from thin layers of dielectric materials deposited onto a glass substrate. The thickness and composition of these layers are precisely controlled to achieve the desired spectral characteristics. 550nm bandpass filters are often available as off-the-shelf products, but we also offer custom filters designed and manufactured to meet the specific requirements of our clients.

 

Features

- Bandpass for 550nm

- Accurate wavelength

- Highly scratch-resistant

- High signal-to-noise ratio

- Deeply customized

- High transmittance

- ISO9001, ROHS certified

 

Parameters

Product Name	550nm bandpass filter
Central Wavelength (CWL)	550nm
FWHM	30nm or custom
Diameter	25mm or custom
Thickness	1mm or custom
Transmission Rate	>90%
Blocking Depth	OD6 or custom
Coating	Hard-film coating
Tolerance	±0.01-0.1mm
Wavelength Range:	200-1100nm

 

Spectrum transmission curve

 

Applications

Visible bandpass filters with a 550nm center wavelength are helpful in many applications that require precise control over the spectral content of light within the visible range. Here are a few examples:

- Fluorescence microscopy

- Spectrophotometry

- Colorimetry

- Photography

- Astronomy

 

How does the 550nm bandpass filter apply in astronomy?

A visible bandpass filter 550nm can be a helpful tool in astronomy for studying specific features and characteristics of astronomical objects, reducing light pollution, correcting atmospheric effects, and studying the Sun's chromosphere. Here are a few examples:

 

Narrowband imaging: This technique uses a filter to selectively transmit light within a range of wavelengths centered at 550nm, a standard emission line in many astronomical objects. By imaging with this filter, astronomers can isolate and study these objects' specific features and characteristics.

 

Light pollution reduction: Light pollution can interfere with astronomical observations in urban areas. A 550nm bandpass filter can selectively transmit light within a narrow range of wavelengths, including those emitted by astronomical objects of interest, while blocking light pollution.

 

Color correction: When imaging astronomical objects, atmospheric dispersion can cause different wavelengths of light to focus at various points, resulting in color fringing or blurring. A 550nm bandpass filter can be combined with other filters to correct this effect and produce sharper, more explicit images.

 

Solar observations: During solar observations, a 550nm bandpass filter can isolate and study the specific features and characteristics of the Sun's chromosphere, a layer of the solar atmosphere that emits light with a wavelength close to 550nm.

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