Moravian instruments, Inc., source:, printed: 25.2.2018 10:19:56

Main page  Observations

NGC 2237 “Rosette”
 Martin Myslivec used just two narrow-band filters to capture this stunning image of the Rosette nebula in Monoceros. These filters pass only red light emitted by hydrogen (called Hα line) and blue-green light emitted by oxygen (called OIII line). Because all other light sources are suppressed, fine details in the nebulosity, shining especially in these two colors, are much better visible.

We recommend to examine this image in details (clikc on it to see it in full resolution) it reveals bright young stars in the center, which intense radiation pushes the gas outwards. Interstellar matter then forms trunks and walls, which can be seen as silhouettes on the bright background. New stars can possibly form within the chunks of gas.

Martin used his G3-16200 camera on the 30cm, f/3.8 astrograph. Total exposure time needed to capture this image exceeded 18 hours.