Quote:
Originally Posted by Merlin66
Don't take my comments as being critical of your work; this is very typical of the testing and fine tuning cycle that goes on with EVERY new spectroscope - believe me!!!!
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I haven't read anything as critical, just advice.
Quote:
Originally Posted by Merlin66
( looking closely at your photo..why is the collimator lens not showing a focus on infinite? trying to compensate for the back focus to the slit??? May have an effect....)
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I found the old Pentax, apparently I didn't throw it out, Measured the focal point of the 200mm M42 at 45mm. I have 51mm lens-slit. I will set about adjusting this.
