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NGC 4236 (Caldwell 3), Galaxy in Draco

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This is a large and very elongated spiral galaxy that is hard to observe because of its very low surface brightness. The best recommendation is to use a low-power eyepiece with a wide field of view, and this faint object should appear slightly brighter than the sky background. This galaxy is part of a nearby group of galaxies that includes M81 and M82 in Ursa Major, and it is about 12 million light years away.
Evening visibility: November-August
Best viewed with: telescope
  Printable chart (pdf) View larger image
Directions:
Start by finding the Big Dipper, one of the most recognizable star patterns in the sky. It is part of the constellation Ursa Major, the big bear. It is shown here upside down, high in the sky above Polaris, which is where it can be found during the evenings in spring and summer. For other seasons and times of night, rotate the chart as needed to match what you see in the northern sky.

The stars Merak and Dubhe in the bowl of the Big Dipper are called the "pointers" because they point to the North Star, but they also point (more or less) to the closer 4th magnitude star Giausar at the tip of the tail of Draco, the dragon. As shown below, the next star in Draco's tail is Kappa (κ) Draconis, about 5 degrees away. About 3/4 of the distance from Giausar to Kappa is the galaxy NGC 4236. Be sure to use a wide-field eyepiece to try to spot its dim oblong glow.
Star charts created with Cartes du Ciel