NGC 147 & 185
Dwarf Elliptical Galaxies
in Cassiopeia

LAAstro.com by Bill Patterson
Catalog: NGC 147 (lower right) & NGC 185 (upper left)

Magnitude: 
9.5 to 10.5 (measurements vary)

Size: 
13.2' x 7.8' (N147) and 11.8' x 10' (N185)

Constellation:
Cassiopeia

Common Name or Description: 
Caldwell 17 & 18 - irregular dwarf galaxies that are companion satellites to M31
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Date Taken:  10/30/05                            Location:  OCA site, Anza, CA   
Equipment: 
Takahashi FSQ106 telescope & STL4020 CCD camera - Color
                  Takahashi FS152 scope & STL11000 CCD camera - Luminance

Exposure:   
LRGB = 120/30/30/30 (20min sub exp LUM - 5min subs COLOR)
Notes:        
Tandem imaging with both scopes at once
Click here to enlarge - 35% scale, 400k
Close-up NGC147

Close-up NGC 185