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Perfect collimation - concenter eyepiece

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tanwir

tanwir

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1 hour ago, AstroMuni said:

Do a star test and get the airy disk to tell you how good or bad your collimation is. Small alignment differences wont make much of an impact to your images anyway. BTW what scope do you have?

I have TS Optics 10" F4 Newtonian.

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lnlarxg
lnlarxg

Want to expose this tool called “concenter” that was introduced to me by @Captain Magenta.   It’s not talked about too much surprisingly, and I cannot find much info on this tool on the net. Cost

apaulo
apaulo

i found it very good for centering the secondary mirror , but i still use the cheshire and laser for the primary.  downside is its way overpriced about 50p worth of materials. 60 odd quid badly spent.

bosun21
bosun21

You said that your secondary is askew in your bottom photo! No it isn’t. What you are thinking is your secondary is actually the reflection of the centre of your con center. The large circle that you

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AstroMuni

AstroMuni

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2 minutes ago, tanwir said:

I have TS Optics 10" F4 Newtonian.

As its a faster scope, its best tested using an actual star. If like me, you are in the UK then our weather conditions are not exactly great to get perfect airy disks, so our imaging is more in the hands of atmosphere than in precise collimation. Good luck.

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