M-99 Spiral Galaxy
    Constellation:  Coma Berenices

    Size: 5.4 x 4.7 arcmin

    Magnitude: 10.4 

    Surface Brightness: 

    RA:  12h 18m 49.6s

    Dec: +14d 25m 01s

M-99 is a member of the Virgo Cluster of galaxies.  It is about 7 degrees away from the magnitude 2 star, Denebola of the constellation Leo.  You will probably need dark skies and a 6-inch scope to view the central core as it is a magnitude 10.4.  A 12-inch or larger scope will probably be needed to see the spiral arms. 

Scope:   Orion 90 mm MAK 500
Nikon w/ Max 800 Film
Focal Ratio: f5.5
Exposure:  10 min autoguided w/ MX-5C & STAR 2000

Click here for a Larger Image

Scope:  8" LX 200 SCT
M-5C CCD Camera, STAR 2000 & IDAS LPR
Focal Ratio: f6.6
Exposure:  Two 20 minute guided exposures combined (40 min total)
Link to the SEDS M-99 Page
Back to Spiral Galaxies
Home