Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  IC 1396
Elephant trunk nebula in Ha (monochrome), Remco Kemperman
Elephant trunk nebula in Ha (monochrome)
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Elephant trunk nebula in Ha (monochrome)

Elephant trunk nebula in Ha (monochrome), Remco Kemperman
Elephant trunk nebula in Ha (monochrome)
Powered byPixInsight

Elephant trunk nebula in Ha (monochrome)

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Description

Elephant Trunk Nebula in Hydrogen Alpha (monochrome)

During 2 nights I recorded the Elephant trunk nebula in Ha with my QHY 294 mono camera.

The elephant trunk is a dense globule of gas that is slowly eroded away by the UV light of the bright star at the top of the image. The UV light heatsthe hydrogen gas up and it starts to emit light. at a visible wavelength (the typical Ha wavelenght). Inside the globule stars are forming. The gas there is condensed by the light pressure and it collapses to form stars. at the bottom there are more of these denser gas globules and tendrils to be found. They all point roughly towards that bright hot star.

telescope: Skywatcher 150/750PDS
mount: HEQ5
camera: QHY 294M
filter: 12nm Ha
111 x 5 minutes (9:15 hours)

Edited in Pixinsight. I did some sharpening with deconvolution and a stretch. no further processing after that. the beauty of monochrome imaging and so much integration time is that you can stretch it quite hard without getting noisy image. If it where in color you would get color noise and color gradients much earlier. so mono is quite forgiving

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Elephant trunk nebula in Ha (monochrome), Remco Kemperman