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Veil nebula, 



    
        

            Péter Feltóti

Veil nebula

Getting plate-solving status, please wait...
Veil nebula, 



    
        

            Péter Feltóti

Veil nebula

Technical card

Imaging telescopes or lenses: SkyWatcher 200/800 carbon Newton astrograph

Imaging cameras: Moravian Instruments G3-16200 Mark II

Mounts: SkyWatcher NEQ6 PRO belt modified

Guiding telescopes or lenses: SkyWatcher 200/800 carbon Newton astrograph

Guiding cameras: ZWO ASI 120 mini

Focal reducers: TeleVue Paracorr Type-2

Software: Pleiades Astrophoto PixInisight  ·  Auriga Imaging RegiStar 1.0.9  ·  Photoshop CC

Filters: Astronomik Oiii 6nm  ·  Astronomik H alpha 6 nm


Frames: 216x1200" (72h)

Integration: 72h


Basic astrometry details

Astrometry.net job: 4050919


Resolution: 2450x1430

Data source: Traveller

Description

This summer, I committed myself to capturing one of the most popular objects in the summer sky, a supernova remnant called the Veil Nebula, as spectacularly as possible. The key to this was to assemble the relatively large object from a mosaic of high-resolution panels. The result shown in the picture was crop from 6 mosaic panels.

Each panel was made from 18 raw expos with 20 min 6-nanometer H alpha and the same number of OIII filters, from which I took bicolor images during processing, so. I processed 12 hours of exposure per panel, for a total of 72 hours. It was quite risky to cut into the work without knowing if there would be so many clear nights that there was only 3-4 months in a year to take the picture.

Since I made a mosaic, it was important that each sub-exposure of each panel was accurately composed. Both the angle of rotation of the camera and the positioning of the field of view required an accuracy of 15 arc seconds.

During processing, my goal was to show the area at a depth not seen before, taking advantage of the increased field of view and pixel resolution. So I didn’t want to be able to roam deep through the details deep into each panel, I didn’t want to take 6 side-by-side photos, but one that provides an image more dynamic, deeper vision then images done with lenses with a similar field of view.

Star handling has also been given an important role in image processing. For we could get used to the photos depicting the Veil Nebula, that the more we see, the more and more inflated stars obscure the details. There are two really effective methods against stars: Large aperture and narrow transmission. My scppe with a 20cm mirror diameter already ensure that the stars in the image are smaller, and the narrowband filters are effectivley reducing the apparent size of the stars. As even the pixel resolution has increased due to the mosaic, everything was given to finally see this amazing celestial phenomenon in all its splendor without the disturbing multitude of stars.

Comments

Histogram

Veil nebula, 



    
        

            Péter Feltóti