Nice shot Jo. I'm still trying to figure out that spider neb. The colour can go from cyan to red depending on the camera and / or filters used. There must be plenty of OIII in it to compete with the Ha. If you were to shoot it with an LP filter, it seems to change the balance to red Ha.
One thing, do you use an IR / UV block filter? That can help reduce some star aberrations on most refractors without losing any important information.
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