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IC_2177_and_the__van_den_Bergh_93_reflection_nebulosity.jpg
IC 2177 emission and the van den Bergh 93 reflection nebulosity1752 viewsIC 2177, in the constellation Monoceros, is the large red emission nebula. IC 2177 is often called the Seagull Nebula, embedded in the head of the seagull is van den Bergh 93 (slightly left of center in the image) that actually refers only to the blue reflection nebulosity. Image is a total exposure of 2 hrs 30 mins (30 darks; 60 flats; modified Canon 40D; Takahashi E-180; image aquisition Images Plus 4.0; Calibration, alignment, and stacking in Images Plus 3.82b; Adobe Photoshop CS5)
Vega_Betelgeuse_spectra.jpg
A Tale of Two Stars1329 viewsHere are basic spectra from two familiar stars in the night sky. Vega's spectra is on the left and basically has weak spectral lines based mostly on the Hydrogen Balmer series. This is indicative of a fairly young, hot star. Betelgeuse's spectra is far more complex. We can see spectral lines for Barium, Calcium, Iron and Magnesium and compounds like Vandium Oxide and Titanium Oxide indicative of a star near the end of its life. Data collected with amateur equipment and processed through RSpec software.
   
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