Rosette Nebula(NGC 2244)

 

Telescope : SW Esprit 100ED

Mount : SW EQ6-ri 

Camera : ZWO 533 mc pro

Guiding : 8x50 SW finder with QHY 5IIL

Filters:   Total exposure time :290minutes with L-Enhance & ir-cut filter

Programs I have used : Nina 3.0 _ PixInsight 1.8.9-3

The Rosette Nebula is a vast emission nebula located about 5,200 light years away. The star forming region lies near a large molecular cloud in the constellation of Monoceros, the Unicorn. It is closely associated with the young open star cluster NGC 2244.

Also known as the Satellite Cluster, NGC 2244 appears at the centre of the Rosette. The hot young stars of the cluster were formed from the nebula’s material in the last 5 million years.

The stars in the Satellite Cluster are responsible for the nebula’s glow. Their radiation ionizes the surrounding clouds of nebulosity, causing them to emit their own light. The nebula glows in the red part of the spectrum because the powerful ultraviolet radiation from the stars strips electrons from the nebula’s hydrogen atoms.

The Rosette Nebula is a very active stellar nursery. It is home to numerous Herbig-Haro objects and Herbig Ae/Be stars, Bok globules, T Tauri stars and clusters of newly formed stars. The dark filaments of dust extending toward the centre of the nebula, sometimes called “elephant trunks,” are shaped by the stellar winds and radiation from hot young stars and electromagnetic forces.

IC 1805 in SHO(Heart nebula)

Telescope : SW Esprit 100ED

Mount : SW EQ6-ri 

Camera : ZWO 533 mc pro

Guiding : 8x50 SW finder with QHY 5IIL

Filters:   Total exposure time :6 hours (72x300sec) with L-enchance 1.25

Programs I have used : Nina 3.0 _ PixInsight 1.8.9-3

The Heart Nebula (also known as the Running Dog Nebula, Sharpless 2-190) is an emission nebula, 7500 light years away from Earth and located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. It was discovered by William Herschel on 3 November 1787. It displays glowing ionized hydrogen gas and darker dust lanes.

The brightest part of the nebula (a knot at its western edge) is separately classified as NGC 896, because it was the first part of the nebula to be discovered. The nebula's intense red output and its morphology are driven by the radiation emanating from a small group of stars near the nebula's center. This open cluster of stars, known as Collinder 26, Melotte 15, or IC 1805, contains a few bright stars nearly 50 times the mass of the Sun, and many more dim stars that are only a fraction of the Sun's mass.

The Heart Nebula is also made up of ionised oxygen and sulfur gasses, responsible for the rich blue and orange colours seen in narrowband images. The shape of the nebula is driven by stellar winds from the hot stars in its core. The nebula also spans almost 2 degrees in the sky, covering an area four times that of the diameter of the full moon.

IC 5070 Pelican nebula -Hubble palette-

This is the RGB version from 533mc pro

 

Telescope : SW Esprit 100ED

Mount : SW EQ6-ri 

Camera : ZWO 533 mc pro

Guiding : 8x50 SW finder with QHY 5IIL

Filters:   Total exposure time :5 hours (60x300sec) with L-enchance 1.25

Programs I have used : Nina 3.0 _ PixInsight 1.8.9-3

 

The Pelican Nebula (also known as IC 5070 and IC 5067) is an H II region associated with the North America Nebula in the constellation Cygnus. The gaseous contortions of this emission nebula bear a resemblance to a pelican, giving rise to its name.The Pelican Nebula is located nearby first magnitude star Deneb, and is divided from its more prominent neighbour, the North America Nebula, by a foreground molecular cloud filled with dark dust. Both are part of the larger H II region of Westerhout 40.

The Pelican is much studied because it has a particularly active mix of star formation and evolving gas clouds. The light from young energetic stars is slowly transforming cold gas to hot and causing an ionization front gradually to advance outward. Particularly dense filaments of cold gas are seen to still remain, and among these are found two jets emitted from the Herbig–Haro object 555. Millions of years from now this nebula might no longer be known as the Pelican, as the balance and placement of stars and gas will leave something that appears completely different.

The Cygnus Wall of the North America Nebula(Hubble palette)

Update : 2 new versions

This is the narrowband version_2

This is the RGB version

This is the bicolor version

Telescope : SW Esprit 100ED

Mount : SW EQ6-ri 

Camera : ZWO 533 mc pro

Guiding : 8x50 SW finder with QHY 5IIL

Filters:   Total exposure time :4:05 hours (49x300sec)

Programs I have used : Nina 3.0 _ PixInsight 1.8.9-3

Location: Grammatiko, Attiki 

The North America Nebula covers a region more than ten times the area of the full moon, but its surface brightness is low, so normally it cannot be seen with the unaided eye. Binoculars and telescopes with large fields of view (approximately 3°) will show it as a foggy patch of light under sufficiently dark skies. However, using a UHC filter, which filters out some unwanted wavelengths of light, it can be seen without magnification under dark skies. Its shape and reddish color (from the hydrogen Hα emission line) show up only in photographs of the area.

The portion of the nebula resembling Mexico and Central America is known as the Cygnus Wall. This region exhibits the most concentrated star formation.

The Cocoon Nebula(IC 5146)

Telescope : SW Esprit 100ED

Mount : SW EQ6-ri 

Camera : ZWO 533 mc pro

Guiding : 8x50 SW finder with QHY 5IIL

Filters:   Total exposure time :8hours & 3min(161*180") from 2 nights

Programs I have used : Nina 3.0 _ PixInsight 1.8.9-3

Location: Grammatiko, Attiki 

IC 5146 (also Caldwell 19, Sh 2-125, Barnard 168, and the Cocoon Nebula) is a reflection/emission nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula. The cluster is also known as Collinder 470.

 It shines at magnitude +10.0/+9.3/+7.2. Its celestial coordinates are RA 21^h 53.5^m , dec +47° 16′. It is located near the naked-eye star Pi Cygni, the open cluster NGC 7209 in Lacerta, and the bright open cluster M39. The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago; the nebula is about 12 arcmins across, which is equivalent to a span of 15 light years.

When viewing IC 5146, dark nebula Barnard 168 (B168) is an inseparable part of the experience, forming a dark lane that surrounds the cluster and projects westward forming the appearance of a trail behind the Cocoon.

 

Great Star Cluster in Hercules(M 13)

Telescope : SW Esprit 100ED

Mount : SW EQ6-ri 

Camera : ZWO 533 mc pro

Guiding : 8x50 SW finder with QHY 5IIL

Filters:   Total exposure time :2 hours from 2 nights

Programs I have used : Nina 3.0 _ PixInsight 1.8.9-2

Location: Grammatiko, Attiki 

Messier 13 (M13), also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules.

M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764. It is located at right ascension 16h 41.7m and declination +36° 28'. With an apparent magnitude of 5.8, it is barely visible with the naked eye on a very clear night. Its diameter is about 23 arc minutes and it is readily viewable in small telescopes. Nearby is NGC 6207, a 12th magnitude edge-on galaxy that lies 28 arc minutes directly north east. A small galaxy, IC 4617, lies halfway between NGC 6207 and M13, north-northeast of the large globular cluster's center.

M13 is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is the variable star V11 with an apparent magnitude of 11.95. M13 is 25,100 light-years away from Earth.