For St Valentine’s Day – Heart Nebula!



The Heart Nebula, IC 1805, Sh2-190, lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. This is an emission nebula showing glowing gas and darker dust lanes. The nebula is formed by plasma of ionized hydrogen and free electrons.

The very brightest part of this nebula is separately classified as NGC 896, because it was the first part of this nebula to be discovered.  The nebula’s intense red output and its configuration are driven by the radiation emanating from a small group of stars near the nebula’s center. This open cluster of stars known as Melotte 15 contains a few bright stars nearly 50 times the mass of our Sun, and many more dim stars that are only a fraction of our Sun’s mass. The cluster used to contain amicroquasar that was expelled millions of years ago.

Imaging telescopes or lenses: Pentax Super Takumar 200mm f/4,  4,5″ selfmade Newton f/3,8
Imaging cameras: SBIG ST2000XM,  SBIG 8300M
Mounts: Vixen New Atlux
Resolution: 1650×1214
Dates: Sept. 9, 2012
SBIG B: 6×600″ bin 1×1
B: 3×900″ bin 1×1
SBIG G: 6×600″ bin 1×1
G: 3×900″ bin 1×1
Astronomik HA: 28×600″ bin 1×1
Baader HA: 22×900″ bin 1×1
L: 2×900″ bin 1×1
R: 3×900″ bin 1×1
Integration: 14.9 hours
Avg. Moon age: 22.56 days
Avg. Moon phase: 45.67%
RA center: 40.382 degrees
DEC center: 60.960 degrees
Pixel scale: 11.078 arcsec/pixel
Orientation: -120.152 degrees
Field radius: 3.151 degrees
Locations: Erdweg/Germany, Erdweg, Germany
Author: Michael Deger