Helios Fieldmaster ED85DS Sony Alpha 16mm - 27mm

16mm - 27mm

astrophotographers can cut down on the problems caused by periodic error to get smoother tracking and better performance from an autoguider resulting in a sharper

North-Level Alignment

Observed fall: Yes

Helios Fieldmaster ED85DS Sony Alpha 16mm - 27mmHelios Fieldmaster ED85DS 20 60 x 80 ED Dual Speed Waterproof Zoom Spotting Scope 80mm 20x 60x Zoom The new high end Fieldmaster ED85DS is perfect for the discerning birdwatcher and nature observer. This refined instrument features a doublet objective lens which provides a highly corrected image and excellent optical performance. One Exotic ED (Extra low dispersion) lens element is employed in its construction, which virtually eliminates chromatic