Sunday, September 23, 2018

September 23, 2018: More practice with the Orion nebula

My adventure with astrophotography is going quite well except that I'm a dusk and dawn target for mosquitoes.  Tracking is improving.  Vibration control is improving.  here is the Orion Nebula - cropped and uncropped.

Orion Nebula uncrossed:  ISO 8000 Exposure, 10 sec  400 mm 

Cropped: ISO 3200, 5 sec, 400 mm

Oct 5 Better tracking ISO 800 60 sec exposure, 200mm

The boundary around the reddish region is quite interesting.  The colors apparently come from UV radiation of hydrogen gas (ionized Hydrogen, H II)

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