Search Results for: Optical telescope
imaginings on earth and in space. wednesday, july , john herschel made four observations of lenticular galaxy ngc summary: john herschel made four observations of lenticular galaxy ngc , which his father, uranus discoverer william herschel, discovered oct. , . sir william herschel's -foot reflecting telescope
, through which sir william discovered ngc on oct. , , and used for his son's four observations of ngc : w. herschel, w. bunce and j. walker's william herschel's twenty-foot reflecting telescope ( print), cc by , via university of cambridge institute of astronomy library john herschel made four observations...
https://earth-and-space-news.blogspot.com/2012/07/