Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Checkmark Nebula  ·  IC 4706  ·  IC 4707  ·  Lobster Nebula  ·  M 17  ·  NGC 6618  ·  Swan Nebula  ·  omega Nebula
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The flying Swan Messier 17, 



    
        

            Johannes Bock
The flying Swan Messier 17
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The flying Swan Messier 17

Getting plate-solving status, please wait...
The flying Swan Messier 17, 



    
        

            Johannes Bock
The flying Swan Messier 17
Powered byPixInsight

The flying Swan Messier 17

Technical card

Imaging telescopes or lenses: TS-Optics 6" Ritchey Chretien 1370mm

Imaging cameras: Nikon D810 astrocool CentralDS full spectrum

Mounts: SkyWatcher AZ-EQ5 GT pro CG-5 tuned

Focal reducers: TS-Optics 2" CCD Reducer 0,67x

Filters: Optolong L-eNhance 2"  ·  Hutech IDAS IDAS HEUIB II Ha

Accessory: Lacerta MGEN 2  ·  Lacerta MGEN-III  ·  APM Image Master 50/200


Dates:May 20, 2020June 13, 2021

Frames:
Hutech IDAS IDAS HEUIB II Ha: 28x300" (2h 20') ISO800
Optolong L-eNhance 2": 21x420" (2h 27') ISO1250

Integration: 4h 47'

Avg. Moon age: 15.13 days

Avg. Moon phase: 6.71%


Basic astrometry details

Astrometry.net job: 4637608

RA center: 18h 20' 44"

DEC center: -16° 4' 37"

Pixel scale: 3.038 arcsec/pixel

Orientation: 1.234 degrees

Field radius: 1.047 degrees


Resolution: 1403x2048

Data source: Backyard

Description

Messier 17 in Sagittarius is one of the brightest diffuse nebulae in the sky. Commonly known as the Omega, Swan, Horseshoe, or (especially in the southern hemisphere) Lobster nebula, M 17 is just visible to the naked eye under very favorable conditions.

The overall color of the Omega Nebula is reddish, due to light emitted from the hot hydrogen gas excited by the stars that have just formed within it. However, the nebula's brightest region is actually white, apparently the result of light emission from the hottest gas, mixed with reflections of bright starlight from dust. The nebula contains a large amount of dark obscuring material, which has been heated by the hidden young stars, and shines brightly in the infra-red.

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The flying Swan Messier 17, 



    
        

            Johannes Bock

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Astrophotography Germany