Robert Huerbsch's picture

Eastern Veil Nebula

The supernova explosion that created the Veil Nebula occurred 5-10,000 years ago. Ancient hieroglyphics from this time period show a second sun... and it would have been visible during the day! It is located 2,500 light-years away in the constellation of Cygnus and was discovered by John Herschel in 1825.

Image captured over a couple nights in late April - May 1st, 2018 using an apochromatic refractor at f/5.6 and F/L of 730mm. Monochrome camera cooled to -15c to reduce noise. False color image comprised by combination of:

R: Hydrogen Alpha filter
G: synthetic channel by combining Ha and O3
B: Oyxgen III

The resolution is ~ 1 arc second per pixel. The Earth rotates at ~ 15 arc sec so without tracking, you would get star trailing in less than 1/10th of a second.

730mm · f/5.6 · 6 hours (180s subs)
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