Image Exposure Details

Filter	Exposures
Clear/ Lum	460 minutes
Red	100 minutes
Green	100 minutes
Blue	100 minutes
Ha	0 minutes
OIII	0 minutes
SII	0 minutes

NGC4157 in Ursa Major is a barred spiral tilted just enough to see some of the core detail. It is about 6.7 x 1.2 arc/minutes in size and is framed by an 8th magnitude
F class star.

RCOS 20" carbon truss - 100mm FFC
Paramount ME
Apogee Alta u9000
SBIG ST402 Guider
Astrodon MegaMoag
Astrodon 50mm Sq Filters
MaxDL 5
CCDAutopilot 5
CCDStack2
Photoshop CS5

See more images                 Download the Jpg        Subscribe to the New Picture Alert        Contact Ken Crawford

Other galaxy images you may like

This image may be used for personal or educational use but the image and this website is Copyright © Ken Crawford. If you are a publisher and would like a full resolution of this or other images contact Ken Crawford.