Antlia ALP-T Dual Band 3nm SII&OIII 2" Filter (ALP-T-3NM-SO-2)

Antlia ALP-T Dual Band 3nm SII&OIII 2" Filter (ALP-T-3NM-SO-2)The ALP T dual band 3nm SII&OIII filter is a dual narrowband filter, which lets the deep red Sulfur II 672. 4nm and the blue green OIII (500. 7nm) lines through and is primarily engineered for color cameras to assist astrophotographers taking deep sky images with superior SNR(Signal to Noise Ratio). With an FWHM half bandwidth designed at 3nm and achieving an optical density (OD) of 4. 5 on unwanted wavelengths, it works strongly in blocking light

Lens systems - including those of apochromats

It allows you to attach a DSLR camera and lens to any Celestron SCT optical tube assembly and take advantage of the fact that your telescope has a dual-axis motor drive

The Solar Continuum Filter is practically a narrow band photosphere filter for solar observation in white light

and desktop mounts

Please contact Antlia if you have any questions

Because shorter exposure times are possible

The reduction of chromatic aberration corresponds to what is achieved by corrections-lens systems

This increased functionality comes with a slight increase in weight

without any loss of sharpness as a single filter in front of a binocular or be used for afocal projection with digital cameras (far from the focal point

The ZWO LRGB filters have better transmission

83 arc seconds Resolution (Dawes): 1

The shortest overall length is only 883mm