Clic here for 60% size 2300x2380 (735 kB)
NGC 5907 is a spiral galaxy located approximately 50 million light years from Earth. It is a member of the NGC 5866 Group including beside NGC 5866 also NGC 5879 in the constellation Draco.
16" cassegrain in corrected secondary focus at f/10
About this Image
NGC 5907 has long been considered a prototypical example of a warped spiral in relative isolation. Then in 2006, an international team of astronomers announced the presence of an extended tidal stream surrounding the galaxy that suggests the gravitational perturbations induced by the stream progenitor may also be the cause for the warp, see the publication here.
The tidal loops are not visible in this image taken from a light polluted site.Yet many faint background galaxies in a filamentary structure can be found in this wider field image measuring 30 arc min in both axes.
North is at right.
Find a close-up on the galaxy in 35/80% size below.
Technical Details
Optics
Mount
ASA DDM-85XL
Camera
SBIG STX16803 at -30C, STX filter wheel
Filters
Baader 65x65mm LRGB
Date
June 2011
Location
Wildon/Austria
Sky Conditions
mag 5.5 sky, raw FWHM 1.6-2.2", temperature 15-22 C
Exposure
L:R:G:B = 600:100:100:100 minutes (20-minute sub-exposures)
Programs used
Autoslew
Maxim DL 5
CCDStack
Photoshop CS5
home