Among the photographs on display are those from the RMS Titanic, which Fr Brown took before disembarking in Cobh in County Cork.
Fr Browne had embarked upon his Titanic journey having been given a present of a ticket by his uncle Robert, who was Bishop of Cloyne. His ticket allowed him travel from Southampton to Cherbourg and then on to Queenstown in Cobh in County Cork.
However even though a wealthy American couple offered to pay his voyage to America, Fr Browne's Jesuit superior refused to allow him to travel and he disembarked in Cobh.
Fr Brown took many photographs of the ship, and after the tragic sinking in April 1912, his photographs appeared on the front pages of newspapers around the world. He had taken the last picture of Captain Smith and the only one ever taken in the Marconi room.
As one of the Jesuits missions and retreats staff, he was resident in Emo Court from 1930, when the Irish Jesuits acquired the house as a novitiate and ran it until 1957.
During his years there he took more than 5,000 photographs of life in Saint Mary's (as Emo Court was known during the Jesuit occupancy from 1930 to 1969) and in the surrounding countryside.
All in all it is believed that Fr Browne took more than 42,000 photographs before his death in 1960.
The negatives were found in 1985 by Fr Eddie O'Donnell SJ in the basement of the Irish Jesuit Provincials House.
They were packed tight into a large black metal trunk and with them was stored an album of prints now known as Fr Browne's Titanic Album.
Many of these have now been put on display in the rooms in Emo Court.
Emo Court was handed over to the State in 1994 and now is open to the public from Easter until the end of the summer.
Speaking about the exhibition Minister Hayes said, “We hope it will add to the attraction that is Emo Court and the wonderful surroundings of the house. … It will be another attraction in what is a wonderful national park at Emo.”
The exhibition of Fr Browne's photographs is free of charge and is expected to run until September.