A rather iffy night, with high cloud passing through - nevertheless a welcome respite from our wet and windy weather.
The beehive has certainly taken a battering, and try as I may, I could not really bring out the saturation, I hoped for. After viewing glorious images by
@Lee and
@Adrenaline, I reduced the gain on my Altair 183C camera to 100 (unity 400), and with Adrian’s advice stopped down the aperture of my Samyang 135mm to 48mm (~f2.8).
Stars are improving, apart from the very obvious red-blue gradient across the field; I can only assume this is something to do with refraction within the optical train.
@Taman kindly demonstrated that this lies within the stars rather than the background. None of the filters I use are optimised for fast f2 optics. In this case built in UVIR window in the camera and a Baader clear glass in filter drawer. (needed to achieve optimal focus).
Any ideas very welcome.
The sublime colour difference between gamma and delta Can, either side of M44, shows up nicely and hopefully the bees, and clear skies, will be more productive this year.
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