Names	ACO 407, ZwCl 0257.8+3542
Right Ascension (2000.0)	03:01:49.4
Declination	+35:50:06
Constellation	Perseus
Redshift (z)	0.046200
Heliocentric Radial Velocity	13850 km/s
Distance (esteem)	591,000,000 light years
Date (DD/MM/YYYY)	12/12/2015
Exposure time	17,820 seconds (11 x 1500 exposures and 1 x 1320) with binning mode 1 x 1 and AO-7
CCD Camera	SBIG ST-8XE
Telescope	Meade Instruments Schmidt-Cassegrain 14" LX200 OTA on 10 Micron GM2000 HPS Mount
Focal length	3556 mm
Diameter	355.6 mm
Focal ratio	10
Field of View	13.3 x 8.9 arcminute
Original scale	0.522 arcsecond / pixel

Palomar Observatory Sky Survey images

POSS I/E DSS1 Red

POSS I/O DSS2 Blue

POSS II/F DSS2 Red

POSS II/J DSS2 Blue

POSS II Color

Sloan Digital Sky Survey images

SDSS image

At left we see the central part of the cluster ACO 407. The interacting galaxy pair is UGC 2493 (z=0.043757 for the biggest galaxy and z=0.047666 for the companion). The great barred spiral is UGC 2491 and has a much lower redshift (z=0.016261). The edge-on galaxy on the right is PGC 138583 with a z=0.047653 like the other members of the Cluster.
Return