Supernova  SN2011dh In M51, The Whirlpool Galaxy

 

SN2011dh

Object:
Left Image:  M51 one month before the supernova blast.  Right Image:  M51 and Supernova SN2011dh on 04 June 2011 
Coordinates:
RA = 13h 29.9m, DEC = +47 12' 
Telescope:
Televue NP-101 (4-inch f/5.4 APO refractor)
Mount:
Losmandy G11 German Equatorial
Guide Scope:
Stellarvue S80/9D refractor supported by a Robin Casady TGAD (Tandem Guidescope Aiming Device)
Guide Camera:
Orion StarShoot AutoGuider & PHD guiding software
Imaging Camera:
Canon 20Da
Filters/Exposures:
(04 June Supernova image) Twelve 3-minute exposures @ ISO 800, stacked and processed in Photoshop
Shooting Location:
Virginia Beach, VA
Date/Time:
04 June 2011 @ 04:42 UTC (mid exposure)
Comments:
The image on the right was taken from my backyard on 04 June 2011 under a highly light polluted sky.  The comparison image at left was taken 01 May 2011 under a fairly dark sky in Gates County, NC.