Russell Croman Astrophotography  



IC 1396
in H-alpha

About This Photograph

IC 1396 is cataloged as a star cluster with associated nebulosity. In this image, a special filter was used to let through mainly just the light of excited hydrogen gas. This has the effect of emphasizing the structure of the nebula and de-emphasizing the light from the stars, although they are still quite visible.

From just below center to the bottom of the image is the intriguing Elephant's Trunk nebula. It is a dark globule of gas and dust being eroded by the radiation pressure from the bright stars above it. Numerous other such globules of varying size are scattered throughout the nebula.


Technical Details

Optics:Takahashi FSQ-106N.
Mount:Astro-Physics AP1200GTO.
Filters:Custom Scientific 5nm H-alpha.
Dates/Times:16 August 2004.
Location:my backyard observatory in Austin, Texas.
Exposure Details:Ha = 4.5 hours (15-minute individual exposures).