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NGC772 in Aries

December 11, 2016

NGC 772 is a spiral galaxy in the constellation Aries. It is included in Arp's list of peculiar galaxies. This is an interesting field, because NGC 772 is surrounded by a few eliptical galaxies that are believed to have a tidal impact, causing the fainter outer spiral arm. I was amazed at the sheer number of distant galaxies in this field. They are probably not related to NGC 772 in the center, but there may be a gravitational lens effect at play here, bringing the smaller galaxies into view. 


Techincal details:


Imaging telescope: AT12 RC astrograph f/8
Imaging camera: QHY9M CCD
Filters: Orion 2'' RGB
Mount: Astro-Physics AP900 GTO
Other: Meade DSI guider, Robofocus
Software: CCD Commander, Maxim DL, Photoshop CC 2014, Pixinsight 1.8

Date: Nov 5-7, 2016
Exposure: L:180' RGB:12x300'' each, bin2
Total integration 6 hours
Location: Asteria observatory, Hocking Hills, Ohio, US






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