Valuutta: EUR

New Optolong L-eXtreme F2 is now available!

Optolong has released the new and exciting L-eXtreme F2 filter! The filter has been developed specifically for fast optical systems like RASA, HyperStar and other fast focal-ratio telescopes.

The L-eXtreme F2 is a dual-band (500.7 nm and 656.28 nm, FWHM=7 nm) narrowband pass filter that meets the requirements for transmission at continuously varying angles. Astronomically characterised spectral lines (OIII, Ha) as the main transmission wavelengths, the OIII and H-Alpha nebula emission lines pass accurately at f2 - f3.3 focal ratio.

This filter is a must have for fast telescope users seeking to optimise their systems performance!

Get yours here: https://www.astroart-store.com...

Lahjakortti