Hemisphere:  Southern  ·  Contains:  Checkmark Nebula  ·  IC 4706  ·  IC 4707  ·  Lobster Nebula  ·  M 17  ·  NGC 6618  ·  Swan Nebula  ·  omega Nebula
Getting plate-solving status, please wait...
Omega Nebula - M17, 



    
        

            Thomas Richter
Omega Nebula - M17
Powered byPixInsight

Omega Nebula - M17

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Technical card

Imaging telescopes or lenses: GSO 8" f/5 Newton

Imaging cameras: ZWO ASI 183 MM PRO

Mounts: SkyWatcher NEQ6 Pro Goto

Guiding telescopes or lenses: GSO 8" f/5 Newton

Guiding cameras: Astrolumina Alccd5L-IIc

Focal reducers: Pal Gyulai GPU Aplanatic Koma Korrector 4-element

Software: PhotoShop CS5  ·  PHD2 Guiding  ·  FitsWork 4  ·  DeepSky Stacker Deep Sky Stacker 3.3.4  ·  CCDCiel

Filters: Baader R 1.25'' CCD Filter  ·  Baader B 1.25'' CCD Filter  ·  Baader G 1.25'' CCD Filter  ·  Baader Ha 1.25" 7nm

Accessory: TSOptics TS Off Axis Guider - 9mm


Dates:June 23, 2020

Frames:
Baader G 1.25'' CCD Filter: 9x300" (gain: 53.00) -20C bin 1x1
Baader G 1.25'' CCD Filter: 9x300" (gain: 53.00) -20C
Baader Ha 1.25" 7nm: 5x300" (gain: 200.00) -20C bin 1x1
Baader R 1.25'' CCD Filter: 9x300" (gain: 53.00) -20C bin 1x1

Integration: 2.7 hours

Darks: ~37

Flats: ~27

Flat darks: ~100

Avg. Moon age: 2.25 days

Avg. Moon phase: 5.62%

Bortle Dark-Sky Scale: 4.00


Astrometry.net job: 3643793

RA center: 18h 20' 59"

DEC center: -16° 10' 26"

Pixel scale: 0.495 arcsec/pixel

Orientation: 355.131 degrees

Field radius: 0.449 degrees


Resolution: 5449x3600

Locations: Linden, Linden, Bayern, Germany

Data source: Traveller

Description

Object description (wikipedia.org):

The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, and the Horseshoe Nebula (catalogued as Messier 17 or M17 or NGC 6618) is an H II region in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745. Charles Messier catalogued it in 1764. It is located in the rich starfields of the Sagittarius area of the Milky Way.
he Omega Nebula is between 5,000 and 6,000 light-years from Earth and it spans some 15 light-years in diameter. The cloud of interstellar matter of which this nebula is a part is roughly 40 light-years in diameter and has a mass of 30,000 solar masses.[3] The total mass of the Omega Nebula is an estimated 800 solar masses.
It is considered one of the brightest and most massive star-forming regions of our galaxy. Its local geometry is similar to the Orion Nebula except that it is viewed edge-on rather than face-on.

The open cluster NGC 6618 lies embedded in the nebulosity and causes the gases of the nebula to shine due to radiation from these hot, young stars; however, the actual number of stars in the nebula is much higher - up to 800, 100 of spectral type earlier than B9, and 9 of spectral type O,[citation needed] plus over a thousand stars in formation on its outer regions. It is also one of the youngest clusters known, with an age of just 1 million years.

The luminous blue variable HD 168607, located in the south-east part of the Omega nebula, is generally assumed to be associated with it; its close neighbor, the blue hypergiant HD 168625, may be too.

The Swan portion of M17, the Omega Nebula in the Sagittarius nebulosity is said to resemble a barber's pole.

Comments

Author

superelch
Thomas Richter
License: None (All rights reserved)
4222
Like

Sky plot

Sky plot

Histogram

Omega Nebula - M17, 



    
        

            Thomas Richter