![]() |
| NGC457 "The Owl" Cluster aka "The E.T." Cluster |
NGC457 is one of many open clusters is Cassiopeia. Located approximately 7,900 light years away it consists of roughly 150 members. The brightest star Phi Cassiopeia is not a member but a foreground star located 2,300 light years away.
Camera: Starlight Xpress SXVF-H9
Guider: Starlight Xpress Ex-View off-axis with Starlight Xpress Active Optics unit.
Scope: Celestron C8 @ F6
Filters: RGB: Astronomik L-RGB type 2c, Luminance: Idas
L= 20x20sec, R= 20x45sec G= 14x45sec B= 10x60sec
Date acquired: Oct 5, 2011
Image aquisition by myself.
Post processing by Robert Vanderbei
Go here to view Robert's Astrophotography web pages http://www.princeton.edu/~rvdb/images/
and his National Geographic book "Sizing Up The Universe" co-authored with J. Richard Gott.
Thanks Bob!

No comments:
Post a Comment