NGC 4631 and NGC 4656

NGC 4631, the Whale and its smaller companion NGC 4627 in Canes Venatici  may have been involved in a close encounter with the distorted galaxy, the hockey stick shaped NGC 4656 in the past.
The camera used was a SX Trius 694 mono on a Takahashi 106 refractor. Exposures were 24x300sl,3x600s Ha unbinned, 4x300s binned x2 each for R ,G and B,using Nebulosity, AstroArt and PhotoShop for acquisition calibration and processing.

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