ZWO 2" OIII Filter 7nm (ZWO-OIII7NMD2)

ZWO 2" OIII Filter 7nm (ZWO-OIII7NMD2)Narrowband filter does not eliminate the effects of light pollution or increase the objects brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. The ZWO narrowband O III 7nm filter is designed for nebula observation allowing the 7nm bandwidth of light centred on a wavelength of 500nm through, which corresponds to OIII emission lines, blocking out all other light. Adding the ZWO O III

1340% Minimum Magnification 2100% Maximum Magnification 295 Light Gathering (compared to next size down) 40% General Info Focuser 2" R&P OTA Length (Retract/Ext

and it has 89% more light gathering power than an 8" telescope and more than 40% more than the 9

It sounds like a contradiction with traditional perception of quality

Offered in a 2x magnification

5 e) and high sensitivity

Easy to notch if required

This eliminates blurriness in your images caused by the phone or telescope shaking due to pressure from pressing the button manually

25" Twist Lock Adapter

making for an evening free of obnoxious motor noises while delivering spot-on accuracy

This eyecup easily unthreads simply by rotating it upward further than the uppermost stop - this reveals the M43-thread connection

and makes it easy to transport via the shoulder strap

Construction