Instrument: 12.5" f/5 Home made Newtonian
Platform: Astrophysics 1200 QMD
CCD Camera: SBIG 10XME NABG with Enhanced Cooling
Guider: SBIG ST4
Exposure: LRGB = 60:20:20:20 (RGB Binned 2x2)
RGB Combine Ratio: 1: 1.05: 1.11 (G2V Balanced)
Filters: AstroDon RGB Tricolor
Location: Payson, Arizona
Elevation: 5150 ft.
Sky: Seeing FWHM = 6.5 arcsec (Maxim DL - 10min subframe), Transparency 8/10
Outside Temperature: 10 C
CCD Temperature: -20 C
Processing Tools: Maxim DL, Photoshop, PixInsight, RW Debloomer.
HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS
GLOBULARS OPEN CLUST PLANETARIES LINKS
This is an extraordinary
galaxy group in numerous ways. Here we find a collection of three
bright dissimilar objects in a small area of sky, each one revealing
subtle but beautiful structural details. On the left is the stunning
SAB(r)b spiral NGC5985, a 11.9 magnitude galaxy with a 5 degree
inclination, and a nice sized 5.5 arcminutes wide. Look closely
especially in the larger images for pink HII regions and blue
OB Associations in the arms of this one. In the center is NGC5982,
a 12.0 magnitude E3 Elliptical galaxy that is 2.5 arcminutes
in extent and seen faintly here has a outer halo of material.
It is faintly yellow in color, as is typical of Elliptical galaxies.
On the right is the nearly edge on (7 degree inclination) Sc
spiral NGC5981. It is 3.1 arcminutes long, and has a visible
brownish dust lane through its equator, a stellar nucleus, and
is quite faint at 13.9 magnitude.
in the field include the distant inclined spiral SA0 galaxy NGC5976
on the extreme right edge, at 15.8 magnitude with a small yellow
patch of light to its lower right exactly on the edge of the
frame - 7ZW615, a rare class C galaxy of 18th magnitude that
is .2 arcminutess in diameter. There are lots of very faint 17
- 20th magnitude objects in this field, I strongly recommend
the largest image to drive around in!