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Rh but let one of his pupils, Johannes Eriksen, write to Kepler that he had unasked, through his daughter, promised her ten thaler soon after Kepler's departure, which she also got on asking for them, and when she a fortnight later again requested ten more, Tycho sent to her by Eriksen six thaler and promised her more, though he had not much cash at the time. All this he had done without grumbling, and both he and his family had been kind and obliging to Kepler's wife and her daughter. Tycho therefore desired Eriksen to beg of Kepler to have more confidence in him, and to conduct himself in future with more prudence and moderation towards his benefactor, who had been very patient with him, and wished him and his well. This letter had probably the desired effect, and Kepler, who at heart was most generous and noble, but whose weak point it was always to complain to everybody about money matters, no doubt acknowledged having been too hasty. When he returned to Prague in August, Tycho brought him to the Emperor, who congratulated him on his recovery, and promised him the office of Imperial mathematician on condition that he should work jointly with Tycho on the new planetary tables, which Tycho begged the Emperor's permission to call the Rudolphean or Rudolphine tables.

It was mentioned above that Tengnagel was engaged to be married to Tycho Brahe's second daughter, Elisabeth. On the 5th April 1601, Tycho wrote a letter (in Danish) to his friend Holger Rosenkrands, inviting him to the wedding, which was to take place between Easter and Whitsuntide, and the following day he wrote another letter (in Latin), in