OPL-OIII6-2
(1 review)


in stock
in stock

Optolong O-III Deep-Sky Filter 6.5 nm, 2" Filter Cell


instead 215,52 EUR
only 171,55 EUR
excl. VAT
excl. 4,65 € Shipping costs

 

Optolong O-III Deep-Sky Filter 6.5 nm, 2" Filter Cell


OIII emits 495.9 nm and 500.7 nm, resulting in a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters.

♦ narrowband line filter for important nebulae emission lines

♦ well suited for CCD cameras with full-frame transfer sensors

♦ 2 mm thick and thus homofocal with many other filters from Optolong

♦ interference filter

♦ 2" thread

♦ fine-optically polished

♦ multi-layer hard coated - largely scratch-proof

♦ The images 2 and 4 are for demonstration purposes only, thus showing the filter for 1.25" and its cardboard box.


 
 

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