Cave Nebula
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| Cave Nebula | |
 The Cave Nebula --Courtesy Hunter Wilson |
|
| Observation data: J2000.0 epoch | |
|---|---|
| Type | Emission |
| Right ascension | 22h 57m 17.14s |
| Declination | +62° 28′ 33.4" |
| Distance | 2400 ly |
| Apparent magnitude (V) | ?? |
| Apparent dimensions (V) | 50.0'x30.0' |
| Constellation | Cepheus |
| Physical characteristics | |
| Radius | 35 ly |
| Absolute magnitude (V) | 16 |
| Notable features | - |
| Other designations | Sh2-155, Caldwell 9 |
| See also: Diffuse nebula, Lists of nebulae | |
The Cave Nebula, Sh2-155 or Caldwell 9, is a dim and very diffuse bright nebula within a larger nebula complex containing emmison, reflection, and dark nebulosity.
Visually it is a difficult object, but with adequate exposure, makes a striking image. The nebula gets it's name from the dark lane at the eastern side that has the appearance of a deep cave.
