Comparison of Celestial Navigation Calculators     Copyright © 2000 Starpath School of Navigation
Calculator Properties — Celestial Functions — General Navigation — Design Features
COMPARE	StarPilot-89	Celesticomp (out of production)	StarPilot-86	NC 2000	Merlin II	Navcom 48	NavPak	Astro Nav	Sight Master
Sight Reduction... — Sun and Moon	yes	yes	yes	yes	yes	yes	yes	yes	yes
— Planets	5	4	5	4	0	4	5	4	4
— Stars	173	173	173	57	57	89	252		59
— For arbitrary GHA,Dec	yes	no	yes	yes	yes	yes	yes	no	no
— For artificial horizons	yes	no	yes	yes	yes	no	yes	no	no
— For dip short	yes	no	yes	no	no	no	yes	no	no
Temp&Press corrections	yes	no	yes	yes	no	no	yes	no	no
Historic sites back to	1582	1900	1582	1582	1980	1991	1582	1996	1900
Plot LOPs	yes	no	yes	yes	no	yes	yes	???	???
Zoom plot	yes	--	yes	no	--	no	yes	???	???
Compute running fix	yes	yes	yes	yes	yes	yes	yes	yes	yes
Choose fix from plot	yes	no	yes	no	no	yes	yes	no	no
Range&bearing DR to fix	yes	no	yes	yes	yes	yes	yes	???	???
Star ID	yes	yes	yes	yes	yes	yes	yes	???	yes
Planet ID	yes	no	yes	yes	no	yes	yes	no	no
Predict Stars	all	limited	all	all	no	yes	yes		yes
Predict Planets	yes	no	yes	yes	no	yes	yes
Graphic star map	yes	no	yes	no	no	no	note	no	no
Finds Best Sights	yes	no	no	no	no	no	no	no	no
Analyzes Sights	yes	no	yes	no	no	no	no	no	no
Planet Brightness	yes	no	yes	no	no	no	yes	no	no
Internal star list	yes	no	yes	no	no	yes	yes	yes	yes
Operates without paper list of body numbers	yes	no	yes	no	no	yes	yes	yes	yes
Sunrise/sunset	yes	yes	yes	yes	yes	yes	yes	yes	yes
Time of LAN	yes	no	yes	yes	no	no	yes		yes
Bearing to sunrise/set	yes	no	yes	yes		yes	yes
Moonrise/moonset	yes	no	yes	yes	no	yes	yes		no
Moonphase	yes	no	yes	no	no	yes	yes		no
All twilights	yes	civil only	yes	yes	yes	yes	yes
LAN latitude sights	yes	no	yes	yes	no	yes	yes
Polaris latitude sights	yes	no	yes	yes	no	yes	yes
Lunars for GMT!	yes	no	yes	no	no	no	no	no	no
Calculator Properties — Celestial Functions — General Navigation — Design Features