Galaxy NGC 3184 rocketed to notoriety in 1999, when a Type II supernova (1999gi) was discovered on 12/9/99 by a Japanese amateur astronomer, taking 
images similar to the one I obtained.  The supernova shined bright enough to be seen through amateur telescopes for a few months, but has long since faded, 
and cannot be seen in my image.  At a distance of 25 million light years in the constellation Ursa Major, NGC 3184 is a classic spiral seen face on.  Two bright 
hydrogen II regions, appearing as red knots in the image, were originally described as different objects (NGC 3180 & 3181).  NGC 3184 intrigues 
professional  astronomers with its abundant heavy elements.
This image combined 75 minutes of red, 75 minutes green and 100 minutes of blue exposures, binned 2x2 on a windy night.  An ST10XME camera was used 
through a Meade 12" LX200R and an AP reducer at my new observatory.
        
                                                Music:  Theme to Midnight Cowboy