Optolong UV/IR blocking filter and luminance filter 1.25"

The L filter blocks out infrared and UV light. It is used as a luminance filter for deep sky images.

♦ 1.25" with low-profile filter mount

♦ Filter thickness 2 mm - compatible with all Optolong filters and also with Baader filters

♦ Precise filter curves with steep edges for maximum light transmission

♦ Free from ghost images and reflections thanks to extensive coating

♦ Delivered in a robust storage box

 
Optolong 1.25" UV/IR cut filter and luminance filter

The filter reliably blocks out ultraviolet and infrared light. This increases the contrast and sharpness of the recordings. The filter is absolutely necessary when photographing with telescopes and optics where lenses or correctors are installed. The most important areas of application of the filter are:

♦ Luminance filter/L filter for L-RGB recordings with astro cameras (astrophotography)
♦ Infrared cut filter for deep sky recordings with cameras without an IR cut filter, blurry star images are prevented
♦ Infrared cut filter when taking photos of the moon and planets to increase sharpness by blocking IR light
♦ Reflects heat radiation and blocks UV radiation, which is why the filter is also used for solar observation and photography. The filter itself has no dampening effect, so it may only be used with a suitable lens sun filter.


 
Filter type: interference filter
Size: 1.25" filter - mounted
Filter thickness: 2mm
Filter socket: Low-profile socket with M48x0.75 external thread (length 2 mm)
Height of the socket: 5 mm without external thread


♦ UV/IR blocking filter
♦ Protective container