ANTLIA Infrared Filter for Astronomical Telescope, 1.25 ", IR685, Accessories

Product Description

Antlia IR 685 Pass filter

IR Pass 685nm filter is an absorption type filter that absorbs light before 685nm. In the infrared band, the sensitivity of the naked eye is reduced, making it unsuitable for visual inspection. For lunar planetary photography, it can effectively improve the impact of atmospheric shaking. The closer it is to infrared, the weaker the interference between ambient light and atmosphere will be, improving the contrast of the image. In addition to lunar photography, it can also be used for shooting other planets.

In addition, the IR Pass filter can be combined with LRGB and U-Venus filters to synthesize different wavelengths, showcasing the details of planets in different wavelengths.

Product parameters:

optical glass

1.25 ", 2" is 2mm+/-0.05mm

Surface finish: 60/40 (in accordance with US military form MIL-O-13830)

Double sided grinding and polishing

Face type: 1/4 λ

Parallelism: 30 ″

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Condition

Brand New

Shipping

This item is shipped directly from our supplier in China with tracking.