| NOTES |
DATE:
|
Saturday, August 3 - Sunday, August 4, 2013 |
TIME:
|
10:24 pm - 12:15 am EDT
|
CAMERA:
|
Canon 550D
|
EXPOSURE:
|
45 minutes (15 x 3 minutes @ ISO 1600) |
LOCATION:
|
Richland Township Park (Kalamazoo County, Michigan) |
TELESCOPE:
|
Astro-Tech 8" f/4 Imaging Newtonian (with Baader Coma Corrector) |
| MOUNT: |
Celestron CGEM Computerized Mount |
| GUIDING: |
Orion 70mm Refractor and Orion StarShoot AutoGuider |
PROCESSING:
|
Preprocessed, aligned, stacked, bias, and flat fields subtracted with Nebulosity 2. Further processing done with
Adobe Photoshop CS3 (using Noel Carboni's Astronomy Tools) and Noise Ninja 2. |
COMMENTS:
|
M39 is an
open cluster located in the constellation Cygnus, about 9º
east-northeast of Deneb. It contains only about 30 stars, but (as seen
above) is located in a rich patch of stars in the Milky Way. M39 is
about 1,010 light-years from Earth and about 9 light-years in diameter.
Astronomers estimate it is between 240 - 280 million years old. |
