Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  M 81  ·  NGC 3031
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Messier 81, 



    
        

            Péter Feltóti
Messier 81
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Messier 81

Getting plate-solving status, please wait...
Messier 81, 



    
        

            Péter Feltóti
Messier 81
Powered byPixInsight

Messier 81

Technical card

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

Imaging cameras: ZWO ASI 183MM Pro

Mounts: SkyWatcher NEQ6 PRO belt modified

Guiding telescopes or lenses: SkyWatcher 53 mm mini (for guiding)

Guiding cameras: ZWO ASI 120 mini

Focal reducers: Skywatcher F4 coma corrector

Software: Auriga Imaging RegiStar 1.0.9  ·  Photoshop CC  ·  Nebulosity 3.3.3

Filters: Astronomik Deep Sky RGB, L2


Integration: 0


Basic astrometry details

Astrometry.net job: 3373334

RA center: 09h55m32s

DEC center: +69°0451

Pixel scale: 1.606 arcsec/pixel

Orientation: 270.766 degrees

Field radius: 0.536 degrees


Resolution: 2000x1333

Locations: Belecska Observing Station, Belecska, Tolna, Hungary

Data source: Traveller

Description

My image shows grand design spiral galaxy Messier 81. At first sight it seems to be a quite plane, not well detailed galaxy lacking contrast, so I decided to photograph this subject as detailed and deep as possible. For this I made luminance layer with a small pixelled monochrome camera and I reused a deeply exposed image of the same area made by a canon DSLR as color layer. Also I made a few hours of exposures in H alpha to enhance the emission regions in the galaxy's arms. As a result I've got a highly detailed and deep image of Messier 81 and some high latitude galactic cirrus in the foreground. Thanks to the deeply exposed color layer even the farthest galaxy clusters on the image are colored.

Scope: 200/800 SkyWatcher Newton

Mount: SkyWatcher NEQ6 pro upgraded

Guiding: PHD2

Camera: ZWO ASI183 MM Pro + Canon EOS 600D

Expo: L: 12,7 óra, RGB: 20 óra, Ha: 5 óra

Date: 2020.január-február

Location: Belecska, Halásztelek

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Messier 81, 



    
        

            Péter Feltóti