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Welcome! If you're just starting out, try picking 2 stars from the drop-down lists. The first star is the one you're looking from, and the second one is the one you're looking towards. If you're already quite familiar with star maps, try changing some of the settings such as the map magnification, magnitude limit, and chart label options.
View From Location:
Look Towards Location:
Coordinates:
Catalog number:
* The maximum magnitude actually used by the Mapper depends on magnification. At base (1x) magnification, the limit is +8.0. At higher magnifications, the limit increases by +0.4 per magnification unit. For example, the limit is +10.0 at magnification 6, and +12.0 at magnification 11.