Antlia 3nm SII Pro Series Filter - 2" - SII-PRO-3NM-2 Replacement Parts iOptron has added features for

iOptron has added features for convenience and functionality

The bottom panel is reinforced with a hard layer of PVC for extra protection from minor bumps and to provide a sturdy bottom

Be mindful of the power draw from your dew heater when using an ASIAIR

this compact device will help you locate popular night sky objects

Download Celestron’s Starry Night Software and learn about the night sky

Antlia 3nm SII Pro Series Filter - 2" - SII-PRO-3NM-2 Replacement Parts iOptron has added features forThis very narrowband 3 nm SII filter from Antlia is part of their Pro series and comes in a 2" threaded filter cell that is designed to be screwed on to the 2" receptacle of your astrophotography accessory, including a 2" filter wheel or filter drawer. Antlia 3nm Pro Series Sulfur II Filter 2" Mounted This Antlia SII Pro narrowband filter optimizes the FWHM (full width half maximum) to a 3nm bandpass. As the bandwidth becomes narrower, the 3nm Pro