Tim Trentadue
Messier 27
Messier 27, NGC 6853 – Dumbbell Nebula
The first planetary nebula ever discovered, discovered by Charles Messier in 1764. Names a “Planetary Nebula” by William Herschel for this class of objects around 1784, because he found they resembled his newly discovered planet Uranus.
M 27 is an impressive object, the second brightest planetary nebula, with an impressive amount of detail. The central star is just visible at mag 13.5 The distance is not well known and an adopted value of 12000 LY is generally accepted, the nebula is about 100 times the luminosity of our sun.
The central star is the collapsed core of a once sun like star, now a white dwarf, it now emits most of its energy in the non visible spectrum, the hi energy radiation from the whit dwarf is the power behind the visible nebula, the nebula absorbs the hi energy ultra violet and re-emits it as visible light.
The central star is 60% of our suns mass and only 5% of its diameter, making it the larges white dwarf known, most of the light emitted from the nebula is at one wavelength, that of doubly ionized oxygen, this accounts for the greenish/ turquoise colour.
TEC
TS130 APO f7
ZWO 1600mm mono Pro
ZWO 7p FW
SS 50mm auto guider
SW NEQ6 pro
18x180s each RGB
Sequence Generator Pro
DSS, Star tools Nebulosity & Photoshopcc
North Frontenac Dark Sky Preserve
June 2018
Messier 27
Messier 27, NGC 6853 – Dumbbell Nebula
The first planetary nebula ever discovered, discovered by Charles Messier in 1764. Names a “Planetary Nebula” by William Herschel for this class of objects around 1784, because he found they resembled his newly discovered planet Uranus.
M 27 is an impressive object, the second brightest planetary nebula, with an impressive amount of detail. The central star is just visible at mag 13.5 The distance is not well known and an adopted value of 12000 LY is generally accepted, the nebula is about 100 times the luminosity of our sun.
The central star is the collapsed core of a once sun like star, now a white dwarf, it now emits most of its energy in the non visible spectrum, the hi energy radiation from the whit dwarf is the power behind the visible nebula, the nebula absorbs the hi energy ultra violet and re-emits it as visible light.
The central star is 60% of our suns mass and only 5% of its diameter, making it the larges white dwarf known, most of the light emitted from the nebula is at one wavelength, that of doubly ionized oxygen, this accounts for the greenish/ turquoise colour.
TEC
TS130 APO f7
ZWO 1600mm mono Pro
ZWO 7p FW
SS 50mm auto guider
SW NEQ6 pro
18x180s each RGB
Sequence Generator Pro
DSS, Star tools Nebulosity & Photoshopcc
North Frontenac Dark Sky Preserve
June 2018