NGC1999 Region 
Emission / Reflection in Orion
Uploaded 4/26/25

Certainly one of the most interesting fields in the entire northern sky, centered on NGC1999. Abundant red hydrogen gas fills the field, with rifts and dark lanes crossing it in all directions. Just below NGC1999 are some tiny red nodules which are Herbig Haro objects, and just above to the upper right is the curving arc known informally as the "Waterfall Nebula". To its lower left is the "Chevron Nebula". And of course at the very top we find the outer loops of M42.

Technical Data: RASA 11" f/2.2, ASI6200MM, Baader f/2 Halpha and LRGB filters, 2h total integration, Happy Jack, Az.

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Instrument: RASA 11" f/2.2 Mount: Home Made GEM Camera: ASI6200 MM + LRGB filters Guider: ASI mini w/80mm piggyback refractor Exposure: 120m ( 5 min subs) Location: Happy Jack, Arizona, Elevation: 7000 ft. Sky: Seeing FWHM = 2 arcsec , Transparency 9/10 Outside Temperature: 25 F Image Processing Tools: Maxim DL6: Calibration PixInsight: Alignment, Stacking, Star Removal Photoshop CS2: Curves, Color Correction, Cleanup HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS