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| Common Name |
M 101 |
| Formal Name |
NGC 5457 / Pinwheel Galaxy |
| Date |
3/24/2008 |
| Constellation |
Ursa Major |
| Location |
Ionia, NY |
| Equipment |
Tak Sky90 mounted on Meade 12 Classic, SBig 2000XM Camera/Filter Wheel |
| Temperature |
-15°C |
| Exposures |
| # |
Exp (sec) |
Filter |
Bin |
Net Time (hr) |
| 6 |
600 |
Blue |
1x1 |
|
| 5 |
600 |
Red |
1x1 |
|
| 7 |
600 |
Green |
1x1 |
|
| 7 |
600 |
Lum |
1x1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total |
|
4.2 hrs |
|
| Processing |
Calibrated in CCDSoft
Aligned in Registar
Stacked (Adaptive Add) in Images Plus
Adjusted Levels in PixInsight
Photoshop using Carboni actions |
| Notes |
- Distance 20.9? 25? million lyr
- Diameter 170,000 lyr (70% larger than Milky Way).
- Two small galaxies also visible, NGC5477 to upper left and PGC49919 to the right.
- The galaxy is believed to have had an encounter with another galaxy in the past. It appears asymmetrical on one side and this is thought to be a result of the collision.
- Discovered by the French astronomer Pierre Méchain on March 27, 1781.
www.constellation-guide.com |
