ANTLIA TRIBAND II RGB ULTRA FILTER 2" ESATTO 3.5" Just one click of the

Just one click of the brass pin on the bottom of the slider releases it from the magnetic fixtures for easy removal

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

Baffles have been added to increase contrast and AR coatings are optimized for the 656nm wavelength

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

The objective lens is fully multi coated with the Skywatcher proprietary "Metallic High-Transmission Coating" (MHC) for an effective anti-reflection result that approaches a transmission of 99

ANTLIA TRIBAND II RGB ULTRA FILTER 2" ESATTO 3.5" Just one click of theThe 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