M95
The M95 galaxy (also known as NGC 3351), located in the constellation Leo, is a barred spiral galaxy 32 million light.
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The Leo Triplet (M65, M66 and NGC 3628) is a group of galaxies roughly 35 million light years away. The galaxy NGC 3628 is sometimes referred to as the Hamburger Galaxy.
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Thor’s Helmet (NGC 2359 or SH2-208) is an emission nebula in Canis Major located 12 thousand light years away. At the center of the round bubble is a Wolf-Rayet star, that is thought to be at the early stages of a supernova. This is similar to what is happening in the Bubble Nebula. The Wolf-Rayet type star is what is making this nebula shine.
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The first thing you do with astrophotography image processing is to calibrate your images with flats, darks and dark flats. This process should remove dust donuts, vignetting and other issues you have might in the optical train.
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