| NOTES |
DATE:
|
Thursday, October 7 - Friday, October 8, 2010 |
TIME:
|
11:45 pm - 12:06 am EDT |
| CAMERA: |
Canon 550D (Hutech modified)
|
EXPOSURE:
|
15 minutes (10 × 30 seconds @ ISO 800, 10 × 1 minute @ ISO 800) |
LOCATION:
|
Okie-Tex Star Party (Camp Billy Joe located near Kenton, Oklahoma) |
INSTRUMENT:
|
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:
|
Images acquired with Nebulosity 2. Registered, aligned, stacked, bias and dark frame subtracted with Deep Sky
Stacker. Further processing done with
Adobe Photoshop CS3 (using Noel Carboni's Astronomy Tools), GradientXTerminator, and Noise Ninja 2. |
COMMENTS:
|
The
cluster on the far left is NGC 884 and is 7,500
light-years from Earth. NGC 869, right of center, is "slightly"
closer at
7,200 light-years. These two cluster make up the famous Double Cluster
in Perseus. At this time, in early October 2010, the clusters were
visited by 103P/Hartley or Comet Hartley 2. This little chunk of ice
and rock was MUCH closer - a mere 13 million miles or 0.000002
light-years! |
