A Zeiss projector was then purchased, at a cost of ₢$3,000,000 (including transportation; 1952 values), arriving at the Port of Santos by 29 May 1952.

[1] The architects of the final building were Antonio Carlos, Eduardo Corona and Roberto G. Tibau Pitombo, and was constructed by Construtora Politécnica Ltda.

[4][5] By the time of the 400th anniversary, the planetarium was still being constructed, and the projector was being held by customs in Santos; it wasn't released until June 1955, when it was subsequently placed into storage in Viveiro Manequinho Lopes in Ibirapuera Park.

This delay caused the cost of the originally-planned metal dome to soar from ₢$700,000 to ₢$5,000,000 due to exchange rate fluctuations, far in excess of the budget for it.

As a result, José Carlos Figueiredo Ferraz designed and installed a concrete projection dome instead, which was the first time such material had been used for this type of structure.

[2][6] The planetarium uses a Starmaster projector, manufactured by Carl Zeiss AG, which was installed in 2006 to replace the original Universarium III purchased in 1952.

[3] The metal and concrete half-dome is surrounded by a yellow disk, and the interior is made of wood.