Variable nebulae are
reflection nebula Reflection or reflexion may refer to:
Science and technology
* Reflection (physics), a common wave phenomenon
** Specular reflection, reflection from a smooth surface
*** Mirror image, a reflection in a mirror or in water
** Signal reflection, in s ...
e that change in brightness because of changes in their star.
See also
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McNeil's Nebula
McNeil's Nebula is a variable nebula discovered January 23, 2004 by Jay McNeil of Paducah, Kentucky. It is illuminated by the star V1647 Ori.
Discovery
McNeil's Nebula is a cometary-type reflection nebula, illuminated by the reddish star V1647 ...
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NGC 1555
NGC 1555, sometimes known as Hind's Variable Nebula, is a variable nebula, illuminated by the star T Tauri, located in the constellation Taurus. It is also in the second Sharpless catalog as 238. It is a Herbig–Haro object. The nebula was d ...
(Hind's Variable Nebula)
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NGC 2261
NGC 2261 (also known as Hubble's Variable Nebula or Caldwell 46) is a variable nebula located in the constellation Monoceros. The nebula is illuminated by the star R Monocerotis (R Mon), which is not directly visible itself.
Observing history
N ...
(Hubble's Variable Nebula)
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NGC 6729
NGC 6729 (also known as Caldwell 68) is a reflection/ emission nebula of the Corona Australis Molecular Cloud in the constellation Corona Australis. It was discovered by Johann Friedrich Julius Schmidt in 1861.
This fan-shaped nebula opens from ...
(R Coronae Australis Nebula)
References
External links
Astrobiscuit: Seeing The Speed Of Lightfun and educational video about variable nebula and the amateur community observing them
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Nebulae