The NexStar User’s GuideE-bookThe NexStar User’s GuidedeMichael SwansonNota: 5 de 5 estrelas5/5Salve The NexStar User’s Guide para mais tarde
The Patrick Moore Practical Astronomy SeriesSeries de e-bookThe Patrick Moore Practical Astronomy SeriesdeGrant PrivettSalve The Patrick Moore Practical Astronomy Series para mais tarde