| M92 was
first discovered by Johann Bode in 1777 and was later independently
discovered by Charles Messier in 1781. This is a bright globular cluster
but is overshadowed by M13, which lies nearby in the same constellation. |
| Telescope: |
Orion 10
in. f/4.7 Newtonian |
| Camera: |
Modified Canon T2i (550D);
ISO 800; Raw capture |
| Mount: |
Losmandy G11 |
| Guiding: |
SSAG on 50mm Lumicon
finder scope |
| Exposures: |
5 @ 3minutes |
| Processing: |
Images were
focused using Live View. Raw images were converted in Canon Digital
Photo Professional. They were aligned and combined in ImagesPlus.
The composite was slightly cropped and adjusted (Levels, Curves) in
Photoshop. Noise was reduced using Topaz DeNoise. |
| Note: |
Taken from my backyard
observatory in southeastern Minnesota on 4/21/12. Temp: 30F; Humidity:
88% |
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