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Nice mask, I would also like to see the diffraction spikes also, as I am using the same type of mask, I must say though even the spikes are a little hard to see on the laptop screen.
BTW Paul how do you collimate your scope. I got mine down to infocus and is still a little out with the ring around the star not quite making it. Out of focus is fine with as small an airy disc as I can get 1 ring. But I am still getting a blue cast and red cast at opposite ends of my images. Do you get this, or is my collimation still wrong. Also I did notice that when I put the barlow in the collimation does look a bit out, just wondering if I have to buy a aprochromatic Barlow, thought I had one of those, made by meade. Hmmm, need to check that.
Anyway, if you could get back to me that would be great.
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