DSO is a freeware astronomical program for Palm OS devices that should help to plan observations of deep sky objects. The program allows to search for objects in the NGC/IC database by the object

• minimum dimension

• availability (i.e. its altitude at the particular time and location should be above some minimum)

• type (galaxy, globular cluster, nebula etc.)

• visibility (log(C0/C)) in particular telescope according to the visibility concept developed by Jose Torres or maximum magnitude

You could also limit search to Messier, Caldwell or Hershell 400 objects. Data export is possible to Planetarium

Compatibility

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