The Iris Nebula NGC 7023

The Iris nebula is a bright reflecion nebula in the constellation Cepheus. It's appearance is caused by the very hot star HD 200775 in it's centre whose light is partly reflected and partly absorbed by surrounding dust clouds. As can be seen from the labeled image, the dust cloud itself can be found in Lynd's cataologue of dark nebulae as entry LDN 1174. The reflection nebula shines at magnitude +6.8. It lies 1,300 light-years away and is six light-years across

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NGC 7023 in Constellation Cepheus, Telescope Newton 10" f/4, Camera Atik 460EXM, Total Exposure Time 12h35min

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Mars close to Constellation Gemini on 25.03.2023

A wide angle shot on the island La Palma shortly after new moon. Due to the long exposure times the planet Mars can be seen as a bright reddish-yellow spot in the lower right corner whereas some well known deep-sky objects (the open cluster M35, the jelly-fish nebula IC 443 ant others) can be seen in the upper half of the image. The view was unfortunately a bit clouded by Sahara dust as a result of the weather phenomenon "Kalima" and the moon crescent illuminated thereby the sky already considerably.

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Mars close to Constellation Gemini on 25.03.2023, Picture taken on La Palma, 194x60s, telephoto lens f=135mm, ISO800 mit Canon EOS60Da

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M 106 - Galaxy in Constellation Canes Venatici

The galaxy Messier 106 (M 106) in the constellation Canes Venatici is one of our closer neighbour galaxies in roughly 23 million light years distance from the Milkyway and the Earth. The galaxy hosts an active nucleus with a black hole of approximately 40 million solar masses. The galaxy core is known as a radio source since the 1950s. Further the galaxy undergoes a period of increased star-formation (starburst galaxy).

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Crop of M 106 in Constellation Canes Venatici, Telescope Newton 10" f/4, Camera Atik 460EXM, Total Exposure Time 17h50min

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