Robin
The documentation for collimation says it is for Newtonians. So it won't work on an SCT, RC or refractor ?
If it is not too much trouble, can you explain why.
TIA
john
collimation tool
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Re: collimation tool
Hi John,
the tool really depends on the coma that affects stars on a newtonian away from the optical center of the system - by spotting the point at which the coma is at a minimum you can find the optical center relative to the camera sensor and adjust it into the middle of the sensor. Other scope types that have off-axis fuzziness may work, but, for instance, many scopes are designed to *avoid* off axis aberration, so the technique would not work for those.
cheers,
Robin
the tool really depends on the coma that affects stars on a newtonian away from the optical center of the system - by spotting the point at which the coma is at a minimum you can find the optical center relative to the camera sensor and adjust it into the middle of the sensor. Other scope types that have off-axis fuzziness may work, but, for instance, many scopes are designed to *avoid* off axis aberration, so the technique would not work for those.
cheers,
Robin