Antlia 3nm SII Pro Series Filter - 2" - SII-PRO-3NM-2 Bresser 3 SCT Focal Reducer Specifications

3 SCT Focal Reducer Specifications

5 mm focal length version of the Explore Scientific 52° Series™ eyepieces is best used when you wish to obtain high power (magnification) from your telescope

To demonstrate just one of the effects you will see

A Letter to NexStar Evolution Owners from Celestron Support (PDF)

Antlia 3nm SII Pro Series Filter - 2" - SII-PRO-3NM-2 Bresser 3 SCT Focal Reducer SpecificationsThis 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