Canon 350D Hap Griffin Baader Mod
9x600sec at iso 1600
30 Darks/Flats/Bias
APM/TMB 130/780 with AP field flattener
Baader 7nm H alpha filter

Imaged with moon and in my area of worst light pollution as object was setting. Again, the H Alpha filter allows imaging to occur.

IC 410 is a large region of nebulosity surrounding NGC 1893, a young open star cluster, which can be seen near the center of the nebula (partially obscured by foreground interstellar dust, which shows on this picture as the "holes" near the center of the nebula). The star cluster's stars help ionize the nebula's gas, causing the red hue of the nebula. This nebula lies about 12,000 light years distant, which would make the nebula about 125 light years across.

Notice the 2 small "tadpole" structures within the nebula, near the middle of this image. These are areas of cool, dense gas and are roughly 10 light-years long, and have been formed by radiative pressure from the stars in the cluster.

March 24, 2008