Constellation: |
Ophiuchus - the Serpent Bearer |
Type: |
Dark Nebula |
Position: |
For B72:
RA17h23m30s
Dec-20d37m59s |
Exposure: |
Taken 6-3-08 at the Texas Star Party
11 X 300s ISO 800 65 deg. f |
Processing: |
Raw images converted to 16bit TIFs, dark subtracted and stacked (average) in
ImagesPlus.
Levels and curves adjusted in Photoshop. |
Equipment: |
Orion 80ED f/7.5 refractor at prime focus
Hutech Modified Canon Digital Rebel (300D)
Losmandy G-11 Gemini mount
SBIG ST-4 autoguider
Celestron Guidescope |
Notes: |
Dark Nebula are clouds of dust that obscure the stars behind them.
Many of the dark nebula carry a starting designation with the letter 'B'.
This refers to Edwin Barnard, an early astrophotographer who cataloged them.
Place your mouse over the image above to identify the dark nebulae in the image. |