Refracting telescope on equatorial mounting, 1790-1810
Refracting telescope on equatorial mounting, 1790-1810
Refracting telescope of 2 3/4 inch aperture and 18 inch focal length by Dollond, London, on an adjustable equatorial mount with a fitted mahogany case. Accessories include, 4 eyepieces, a wedge and an ivory annulus that fits to the objective lens for illuminating cross-hairs.