NGC 3718 Galaxy Redo
Copyright © 2012
NGC 3718 Galaxy in the constellation Ursa Major
Joining warped NGC 3718 around 150,000 light years away is NGC 3729 – another massive galaxy which may be causing its neighbor’s peculiarities. NGC 3718 contains an active galactic nucleus (AGN) and is known as a Seyfert Galaxy type 1.9 – one which may contain a massive black hole and is known for violent stars. NGC 3718 displays a tidal “tail” which extends towards its companion, NGC 3729.
Above NGC 3718 is the Hickson Galaxy Group 56 (Arp 322) at 420 million light years away.
This is a redo of this galaxy from 2009 using the SBIG ST-2000XM CCD
Distance: 52 million light years
Camera: SBIG ST-10XME
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Astro-Physics Mach1 GTO with Advanced Telescope Systems portable pier
Images: 76 subexposures of 10 minutes each with 26 of red, 26 of green, and 24 of blue for a total of 12 hours & 40 minutes.
Date: April 2012
Software: Camera, mount, and guider control - CCD Commander & MaximDL; calibration, stacking, & RGB creation in CCDStack, and further processing in Photoshop CS6.