Hevelius Gemini Constellation mapGemini constellation chart print by Johannes Hevelius (1611 87), taken from his catalogue "Prodromus astronomiae". Elisabeth Hevelius published "Prodromus astronomiae" after her husband's death. Elisabeth Hevelius, known as the first female astronomer, was very much taken by her husband's work and assisted him greatly during his lifetime. This constellation map of Gemini shows latitude, longitude, right ascension, and declination. During his lifetime,