Person breaks in, steals electronics from NW Side homes: police
Homes in Logan Square and Bucktown have been targeted by an unknown burglar, police said. Three residential burglaries were reported in September in Northwest Side neighborhoods. Sun-Times file ...

Ra O-Iii 2 In. Filter 12E4E9
# 3F4318476

Ra O-Iii 2 In. Filter 12E4E9

95 USD

Filter for nebulae observations

It has a barrel diameter of 1.25 in

so you can use it with any type of telescope

No assembly required

Levenhuk Ra O-III 2 in

Usage: General use product and can be used by kids over 3 years old

Barrel diameter: 2 in.

filter is perfect for observation of nebulae due to its capability to suppress light that lies outside its 4900−5010? (490−501 nm) passband and transmit wavelengths of the visible spectrum within 150? (15 nm) range

However, don’t forget that this filter gives a green tint to observed objects

It’s highly effective in reducing light pollution and enhancing the contrast of produced images

Warranty: Six months

This filter is recommended for observation under urban city illumination

Made from plastic and film

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