Figure demonstrates the results of the first light MaNGaL observations of
the planetary nebulae Messier 27 at the Cassegrain focus of the 1-m telescope
Zeiss-1000 in September 2017: the images in the emission lines and the continuum,
as well as the color composite image of the nebula in the [OIII],
Hα and [NII] lines after subtracting the stellar continuum.
The relatively large field
of view in the Cassegrain focus of Zeiss-1000 is convenient for observations of
galaxies having a large angular diameter and Galactic H ii regions. A good
example is the Sh2-235 region of star formation, its emission-line composite
image restored from MaNGaL observations is shown in Fig. 7. Also, this figure
shows the spectrum in the Hα + [NII] emission lines of this
nebulae obtained in the scanning mode of MaNGaL. The detailed description and analysis of
these observations are given in
Kirsanova, M. S. et al., 2020
