Tag: Drogenberg

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“Witch Head” nebula from Grandpré

Again with the 300mm Nikkor ED AF objective as previously used on M45. This tele-objective was trusted on me by Gust Vandermolen, photographer from Tienen;

The Witch Head is notoriously ‘not easy’, given the low surface brightness, the large area it strethces over, and the closeness of the very bright Rigel.

This picture was composed out of 100 lights of 120s ech, or 3hr and 20m in total. The mount was the old HEQ5, guiding with the old MGEN 2.

Astropixelprocessor and Photoshop. Don’t zoom in too much, as the star geometry is not exactly pristine. I focussed on the nebula while processing.

With Head nebula in Orion, November 30th from Grandpré.

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IC342 re-processed by Jean Lammertyn

Jean re-processed the set of subs and retained 341 or 75% of the 2-minute subs.

The result is very impressive and offers a view on all nebulosity that surrounds the galaxy but also hides it from being very bright. This galaxy is very large and would fit within a half Moon. So the surface brightness is rather low, which makes it easy for the IFn and Milky Way nebulosity to dim it even further.

The image displays a wealth of information, not only IFN patches everywhere, but also galaxies and H-Alpha nebulosity to the right of the galaxy.

IC342 Processing: Jean Data: Joost 341x120s with EDPH76mm F 4.5 Sharpstar ASI2600MC UV/IR
Version with higher contrast

The bright nebulosity was not the intention of the processing. Apparently the brightness of the image shifted when the original TIF was saved as a JPG under Windows Photo software.

When starting from a PNG, the saved JPG did not brighten. This was the original intended result:

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