Optolong Planetary Filter Kit 2″

Optolong Planetary Filters Kit 

Optolong Planetary filters kit including UV/IR Cut, R, G, B and IR685 filter, 5pcs filters in total. These five filters are boundled by “Solar System Seal”.

What filters are used for Planetary photography?

Photography of planets and deepsky imaging, both are fine to use the combination of monocrom camera and filters. But slightly different, planets photography will not use what deepsky image use like Ha, SII, OIII filter. Planetary photography using filters often are IR, UV,filters, etc. 

The main aim is to capture the specific spectrum, such as rich carbon dioxide. One of the most commoon filter we use is IR filter- infrared filter. 

In nature, the longer the wavelength of light, the smaller affected by atmospheric seeing. Relatively, receiving the influence of red light, or infrared light is far less than the other bands. 

Thus when we image the planet, we usually use an IR filter, transmits only infrared, or near-infrared ligth, in order to reduce the negative influence of seeing. 

In visible light, photographers use the classical RGB filters. For Mercury, Venus, Uranus and Neptune, IR685 comes fist, and for Saturn, Jupiter, UV/IR Cut, R, G, B are good. However, the portfolio of IRRGB is popular. 

IR685 Introduction

Optolong IR Pass685 filter is designed to block the most visible lights and can be used in IR-LRGB imaging to produce a sharper luminance image for the best planetary contrast as atmospheric seeing and distortion is much reduced at longer IR wavelen