M99

Spiral Galaxy in Coma

Uploaded 4/28/02

A bright face on spiral shining at magnitude 10.4, with plenty of core details. This Sc spiral spans 5.4 arcmins in size, and is one of the brightest spirals in the sky. This galaxy contains classic plume structures, lanes of nebulosity perpendicular to the arms seen well on the right side of the core. The Wray Atlas mentions that large amounts of star formation is going in in both the arms and plumes in this object.

Instrument:  12.5" f/5 Home made Newtonian
Platform:  Astrophysics 1200 QMD
CCD Camera:  SBIG ST7E w/Enhanced Cooling
Exposure:  LRGB = 60:20:20:36 (RGB Binned 2x2)
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing FMHW = 2.5 arcsec, Transparency 8/10
Outside Temperature:  10 C
CCD Temperature:  -25 C
Processing:  Maxim DL, Photoshop, AIP4WIN, PW Pro.

 

 

 
 


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