Quote:
Originally Posted by Andy01
Interesting! Seems that the collimator is showing the error up well - the spacing between reflections appears to be inconsistent.
Not sure what options there are regarding the focuser - wait & see I guess.  |
You are misinterpreting the reflections - they are consistent but it is not possible to tell from the photo.
Quote:
Originally Posted by Stonius
You say it does the lens cell tilt and not individual element spacings, but I wonder if, given that you are seeing reflections from all lens surfaces, this would work for colimating the individual lens elements within a cell (thought not their spacings) so all lens elements are centered with respect to one another?
Cheers
Markus
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Yes, you are correct. The problem is that it is not possible to change the tilt of individual elements without affecting the spacing as well.
Quote:
Originally Posted by Sunfish
There are probably a lot of Tak owners anxious to see the result. I know my focuser is off the centre of the lense cell by a millimetre. Could collimation help? Very interesting to find out. I see Grzybowski collimaters can be purchased for not too many hundred euros so I am surprised they are not more common considering their effectiveness.
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I'm not sure, but maybe those collimators come without the required cross-hair reticule eyepiece. If you need to supply your own, then it will add to the cost.
I will post the result of the collimation I did last night once I have the images prepared.