Heinrich Wilhelm
Dove

Universität Berlin (Meteorology Tree)


Johann Franz
Encke

Universität Berlin


Franz Friedrich Ernst
Brünnow

University of Michigan


Nathaniel
Bowditch

Harvard (Physics Tree)


Sears Cook
Walker

US Naval Observatory


Benjamin
Peirce

Harvard (MathTree)


James Craig
Watson

University of Michigan


Franz Friedrich Ernst
Brünnow

University of Michigan


Benjamin
Peirce

Harvard (MathTree)


James Craig
Watson

University of Michigan


William
Chauvenet

Washington University


William
Harkness

U.S. Naval Observatory


Asaph
Hall

Harvard


Simon
Newcomb

Johns Hopkins


Edward Singleton
Holden

Lick Observatory


John M.
Schaeberle

Lick Observatory


Chester
Lyman

Yale (Physics Tree)


Hermann
von Helmholtz

Physikalisch-Technische Reichsanstalt (Neurotree)


Gustav Robert
Kirchhoff

Universität Berlin (Physics Tree)


Charles Sheldon
Hastings

Johns Hopkins (Physics Tree)


Joseph
Winlock

Harvard College Observatory


Samuel Pierpont
Langley

Smithsonian Institution


James Edward
Keeler

Lick Observatory (Physics Tree)




William
Chauvenet

Washington University


William
Harkness

U.S. Naval Observatory


Asaph
Hall

Harvard


Simon
Newcomb

Johns Hopkins


Edward Singleton
Holden

Lick Observatory


Edward Emerson
Barnard

Lick Obsrvatory


Franz Friedrich Ernst
Brünnow

University of Michigan


Benjamin
Peirce

Harvard (MathTree)


James Craig
Watson

University of Michigan


James Craig
Watson

University of Michigan


Edward Singleton
Holden

Lick Observatory


John M.
Schaeberle

Lick Observatory


Charles Sheldon
Hastings

Johns Hopkins (Physics Tree)


Samuel Pierpont
Langley

Smithsonian Institution


James Edward
Keeler

Lick Observatory (Physics Tree)




Daniel Walter
Morehouse

Drake University


Andrew Preston
Peabody

Harvard (Neurotree)


Benjamin
Peirce

Harvard (MathTree)


Joseph
Lovering

Harvard (Physics Tree)


John
Trowbridge

Harvard (Physics Tree)


Pierre-Simon
Laplace

(Physics Tree)


Nathaniel
Bowditch

Harvard (Physics Tree)


Joseph
Henry

Smithsonian Institution


Matthew Fontaine
Maury

US Naval Observatory


Sears Cook
Walker

US Naval Observatory


Benjamin
Peirce

Harvard (MathTree)


Gustav Heinrich
Wiedemann

Universität Leipzig (Physics Tree)


Hermann
von Helmholtz

Physikalisch-Technische Reichsanstalt (Neurotree)


Johann Benedikt
Listing

Universität Göttingen (Physics Tree)


Henry A.
Rowland

Johns Hopkins (Physics Tree)


Thomas Alva
Edison

Edison Laboratory, Menlo Park (Physics Tree)


Edward Leamington
Nichols

Cornell (Physics Tree)


Wilhelm
Röntgen

Universität München (Physics Tree)


Eduard
Riecke

Universität Göttingen (Physics Tree)


Joseph John
Thomson

Cambridge (Physics Tree)


Peter
Pringsheim

Universität Berlin (Physics Tree)


August Adolph Eduard Eberhard
Kundt

Universität Berlin (Physics Tree)


Heinrich
Rubens

Universität Berlin (Physics Tree)


Ernest Fox
Nichols

Dartmouth (Physics Tree)


Charles Edward
St.John

Mount Wilson Observatory

Seth Barnes
Nicholson

Mount Wilson Observatory
(Options)

Nicholas Ulrich
Mayall

Lick Observatory

Horace Welcome
Babcock

Mount Wilson Observatory

Albert Gray
Mowbray

San Jose State

Hyron
Spinrad

UC Berkeley

Arnold Noel
Argue

Cambridge (Physics Tree)

Seth NicholsonX