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Weird!!
Astute readers of this forum will have seen my multiple posts about collimation. Some of you have even proffered advice - many thanks to you all
I have been driving myself round the twist trying to get this right. So tonight I set myself the task of getting it as good as I could.
No luck - no real surprises there.
BUT...and this is the odd bit. Just for the hell of it, I rotated the camera and I found the aberration followed it. So if the stars were elongated north south (ie along the vertical axis) and I then rotated the camera 90 degrees, the elongation also became east west (ie along the horizontal axis).
So I concluded that my nosepiece or my camera itself has some sort of tilt in it.
Is that right? I expect that if the collimation were the main cause for the aberration, the dodgy stars would be consistently dodgy ie they would not be affected by rotation of the camera.
Any thought from the Brains Trust?
Pete
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