Antlia Sulfur II (SII) 4.5nm EDGE 2" Filter (ANT-SII-45NM-EDGE-2) Dew controller it minimizes the impact of

it minimizes the impact of moonlight and urban light pollution

C14) | No EdgeHD tubes Dimensions: 56mm (2

The trigger-actuated FASTGRAB™ ground balance ensures swift and precise adjustments

1100 or Meade SC and ACF 8" telescopes

and the diagonal is 13

Antlia Sulfur II (SII) 4.5nm EDGE 2" Filter (ANT-SII-45NM-EDGE-2) Dew controller it minimizes the impact ofAntlia H alpha EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4. 5nm bandpass. The suppression of optical density (OD) 5 on unwanted wavelengths and the excellent transmittance characteristics found in the Antlia 3nm Pro series has been incorporated into the 4. 5nm EDGE narrowband filters. The result is that these filters deliver superior SNR (signal to noise ratio) and better contrast in your images. Conventional broader