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Sunday, January 25, 2009

IC443, a start of the new project

False color Hydrogen alpha H-a
H-a, stars are supressed to show the nebulosity.
IC443 is a supernova remnant in Gemini.
Last night I installed a Tokina 300mm AT f2.8 lens front of the QHY9 astro camera.
This combination gives me resolution of 3,5 "/pixel, witch mean practically seeing limited
details. The fiels of view is about 207' x 157'.
At the time I was able to shot this target it was low in the sky, about
30 degrees, that and very bad transparency and seeing cut down the sharpness a lot.
I will shot more Ha-light when weather allows and I'm going to
add O-III and S-II data as well to create a narrowband composition.
Imaging details:
Optics, Tokina 300mm AT f2.8 @ 2.8
Camera, QHY9 astro camera Guiding, QHY5 and PHD-Guiding on LX200 GPS 12" Exposures, 8x600s +darks, bias and flats Filter, Baader 7nm H-alpha

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