Contains: Cone nebula, Christmas Tree cluster, NGC 2264, NGC 2251, IC 2169, The star 17Mon, The star 16Mon, The star 15Mon
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Cone Nebula & Christmas Tree - Wide Field

Technical card

Imaging telescope or lens: Samyang 135mm f/2

Imaging camera: Atik 460EX mono

Mount: SkyWatcher AZ-EQ6 GT

Guiding telescope or lens: APM Telescopes Finder 60mm

Guiding camera: Astrolumina QHY5L-II m

Software: PixInsightMain Sequence Software SequenceGeneratorProPHD2 Guiding

Filter: Baader Ha 7nm

Resolution: 2697x2166

Dates: March 25, 2017

Frames: 74x300"

Integration: 6.2 hours

Avg. Moon age: 26.73 days

Avg. Moon phase: 8.59% job: 1509254

RA center: 100.139 degrees

DEC center: 9.917 degrees

Pixel scale: 7.223 arcsec/pixel

Orientation: -0.628 degrees

Field radius: 3.470 degrees

Locations: My Backyard, Langen, Hessen, Germany


This is a very wide field monochrome image of the region around the Cone Nebula and the Christmas Tree Cluster. They are sitting in the middle of a much larger emission nebula with lots of structures.

Composed of more than 6 hours of Ha data taken from my backyard in the light-polluted Frankfurt area – Bortle class 7 (red zone). This is the first serious attempt with my new Samyang 135mm f/2.0 lens, stopped down to f/2.8 to improve the star shapes in the corners. Compared to my attempts with other 135 mm lenses the Samyang is almost perfect.




Sky plot

Sky plot


Cone Nebula & Christmas Tree - Wide Field,