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Both are very good but the FS102 shot is more appealing.
Refractors do great at most but the smallest and dimmest of objects like some galaxies. That's where aperture and focal length rule most.
Its too bad refractors are so expensive for their aperture.
Halos in different colours come from reflections off the filter usually.
Masking the chip can also help so less light is bouncing around in case light is reflecting back off the CCD window.
Latest generation filters all seem to be marketing anti-reflection coatings as reflections were a huge issue with the big chip cameras.
They can be worse when a flattener or reducer is used as light bounces off the lens of them and back again into the camera and filters.
Filters usually have one side meant to face the telescope but you could experiment with turning them around and seeing if that helps.
Greg.
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