gjdonatiello
NGC 5907 ultra-deep image
NGC 5907 ultra-deep image*
Credit: Giuseppe Donatiello, Alessandro Falesiedi, Mario Lovrencie, Tim Stone
This image collects data for about 240 total hours, coming from different instruments and astrocameras. The image includes a base obtained with data from ZTF survey.
Thanks to the depth reached, all previously known structures are reported. The most evident structure is the main loop which here appears structured in two parallel flows, the second weak loop is also recognizable (the vision is disturbed by the field stars but clearly visible). The stellar stream recently reported is not, in all evidence, the continuation of the first loop, but an autonomous structure that continues blurred beyond.
In this image we see a new stellar stream directed towards the center of the galaxy and partially overlaps the previous one, creating a brighter region.
There are a lot of fakes around this galaxy by some amateurs. This is a cause of disappointment since I have always been a promoter of imaging for study purposes, with poorly processed images in which information is preserved.
NGC 5907 is one of those subjects where the "fantasy" of some is unleashed. The double loop is confirmed by the N-body similations, as reported in various scientific papers ... but it is really very weak and subtle.
NGC 5907 ultra-deep image
NGC 5907 ultra-deep image*
Credit: Giuseppe Donatiello, Alessandro Falesiedi, Mario Lovrencie, Tim Stone
This image collects data for about 240 total hours, coming from different instruments and astrocameras. The image includes a base obtained with data from ZTF survey.
Thanks to the depth reached, all previously known structures are reported. The most evident structure is the main loop which here appears structured in two parallel flows, the second weak loop is also recognizable (the vision is disturbed by the field stars but clearly visible). The stellar stream recently reported is not, in all evidence, the continuation of the first loop, but an autonomous structure that continues blurred beyond.
In this image we see a new stellar stream directed towards the center of the galaxy and partially overlaps the previous one, creating a brighter region.
There are a lot of fakes around this galaxy by some amateurs. This is a cause of disappointment since I have always been a promoter of imaging for study purposes, with poorly processed images in which information is preserved.
NGC 5907 is one of those subjects where the "fantasy" of some is unleashed. The double loop is confirmed by the N-body similations, as reported in various scientific papers ... but it is really very weak and subtle.