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Brand: Optolong
SKU : OL-OIII-1
Contact Us for Availability 1-800-483-6287 ext.1
Product Details
OIII-CCD 6.5nm Deep Sky Imaging Filter:
This filter is an extra Narrowband OIII-CCD 6.5nm filter. It is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
OIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image.
Main Use and Performance
Features of the OIII Filter:
Technical Data
Coating Parameter
Filter Cell
specifications
Bandpass | Narro Bandpass at 500nm |
Filter Thickness | 2mm |
Filter Type | OIII |
Free Shipping | Yes |
Shape | Round |
Size | 1.25" |
included items