ANTLIA TRIBAND II RGB ULTRA FILTER 2" ESATTO 3.5" Aperture 12

Aperture 12

5 are still usable

even in apochromatic telescopes as they are not corrected outside the visible spectrum

The GIOTTO 185 can be used with telescopes with an aperture up to 185mm and an external tube diameter between 147 - 210mm with the included plastic thumbscrews

all of this works if mechanical errors are repeatable

ANTLIA TRIBAND II RGB ULTRA FILTER 2" ESATTO 3.5" Aperture 12The new Antlia Triband II RGB Ultra 2" filter is a broadband filter specifically designed for astrophotography with colour DSLR, CMOS or CCD cameras in areas with heavy light pollution. Three passbands in the red, green and blue allow imaging of all deep sky targets such as galaxies, star clusters and reflection nebulae. The new Triband II version adds the H Beta 486. 1nm line, enhancing its ability to capture finer details of nebulae. Spectrum curve