![]() ![]() Being a Petzval it comes with a flat field unlike other regular scopes. With some effort the blue halos can be dimmed a bit in post processing. Fine for casual imaging, with a fast speed and flat field, the Genesis is not for the keen imager." The Genesis’ achromatic nature shows up when imaging and every white or blue star is surrounded by a pretty blue halo. "There is a problem though and it is false colour. The nifty fifty is regarded as one of the cheapest lenses that works for AP but the field of view is so large that even large objects appears as tiny dots only. When you use a Ha modified camera some lenses create flares from the electronics that emit deep red light. Using a step down ring on the front and leaving the internal aperture open removes the spikes. The primes often have to be stopped down but this adds spikes to the stars.
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