EN
The conservatory works carried out on the painting o f „The Crucifixion” from Ostrów Mazowiecka, considered to be an 18th-century work, have revealed that it was painted between 1555 and 1556. This has been proved by both the analysis o f the written material concerning the Ostrów parish and the analysis o f its stylistic features. Moreover, a technological structure o f the painting as well as the use o f an azurite paint also point to an earlier period ot its creation. The painting and the church itself were founded by Andrzej Patrycy Nidecki, an outstanding Polish humanist. Prior to removing 19th-century repaintings a series o f X-ray examinations had been made and shown a good condition o f the original layer. Other studies performed comprised a stratygraphy of layers as well as a chemical examination o f original dyes and adhesives. Oily distemper was used both to paint and to repaint the picture. The main problem was to remove repaintings using a set o f reagents. Because o f damages in the painting layers and a significant change in the size o f the picture made during 19th-century conservation works, it was decided to fully reconstruct the painting, especially that it was again to return to its liturgical functions. The 19th-century repainting presented Christ’s figure on the cross against the clouds. The original painting, on the other hand, showed the Crucifixion with Our Lady, St John and St Magdalene againts the landscape. In building up this composition the author applied graphic patterns drawn from works by Albrecht Dürer and Hans Baidung Grien. These prototypes have been use of in reconstructing the missing parts o f the painting.