| |
Object |
Supernova 2011DH (Type II) in Spiral Galaxy “The Whirlpool
Galaxy” (M51), in Canes Venatici |
| |
Telescope (Photo) |
Celestron 11" EdgeHD SCT OTA @ f/10 on Losmandy G-11 Mount |
| |
Telescope (Guiding) |
Orion EON 80mm ED Refractor @ f/15.625 (f/6.25 w/2.5x Powermate)
on Losmandy G11 Mount |
| |
Camera (Photo) |
SBIG ST8300M monochrome CCD |
| |
Camera (Guiding) |
Starlight Express Lodestar w/
PHD Guiding |
| |
Exposure Detail |
LRGB combination:
Luminance: excluded-average
combination of 20 images ( binned 1x1) at 300 seconds
Red: excluded-average combination of 20 images (binned 2x2) at
150
seconds
Green: excluded-average combination of 20 images (binned 2x2) at
150
seconds
Blue: excluded-average combination of 20 images (binned 2x2) at
150
seconds
RAW file conversion, full calibration (flat, dark, bias,
flat-dark), and initial image processing using ImagesPlus 4.0;
final image processing using Photoshop CS3 |
| |
Location |
Cincinnati Astronomical Society's Dark-Sky
Site (Adams County, Ohio) (N38.876, W83.464)
|
| |
Date |
06/03/11 |
| |
Comments |
A Type II Supernova occurs when a massive star explodes after
its core first collapses (implode-explode). This supernova
was discovered by several amateur astronomers over the period 31
May - 02 June 2011. For comparison, an earlier view of M51
without the supernova can be found by clicking
here. |
