California Nebula -- H-alpha image
An H-alpha image of the California Nebula. This 100 light year long emission Nebula, spans 2.5° of the sky in Perseus, making it a fitting target for my 200mm lens. The Nebula is a mere 1000 light years away from us, each light year being about 6 trillion miles.
Tech stuff: 200 mm f/4 Super Takumar lens on Starlight Xpress SX-694C camera; mounted on iOptron Cubepro 8200 guided with SBIG STi guider and PHD. The 20 X 5 minute exposures using an Astronomik H-alpha narrowband filter were stacked and processed with Nebulosity and PixInsight. This mount is sold as an alt-az mount but is used here in equatorial mode and was clearly able to track well with the weight of this standard quality camera lens used instead of a telescope. Imaged from my yard 10 miles north of New York City.
California Nebula -- H-alpha image
An H-alpha image of the California Nebula. This 100 light year long emission Nebula, spans 2.5° of the sky in Perseus, making it a fitting target for my 200mm lens. The Nebula is a mere 1000 light years away from us, each light year being about 6 trillion miles.
Tech stuff: 200 mm f/4 Super Takumar lens on Starlight Xpress SX-694C camera; mounted on iOptron Cubepro 8200 guided with SBIG STi guider and PHD. The 20 X 5 minute exposures using an Astronomik H-alpha narrowband filter were stacked and processed with Nebulosity and PixInsight. This mount is sold as an alt-az mount but is used here in equatorial mode and was clearly able to track well with the weight of this standard quality camera lens used instead of a telescope. Imaged from my yard 10 miles north of New York City.