MTF
[PuristS]
13383
Did I miss a chapter that told us which projection method
Which projection method was used to make the planisphere disc?
Is it calibrated for the geographical location of the final owner?
Or are the stars too far away to make a difference?
Regards,
MTF
A David Walter Double Pendulum Clock – Part 15, The Sidereal Train
David has finished the sidereal conversion train. As you know this train is used to convert the mean solar time that we usually use, based on the position of the sun, to astronomical time, based on the position of the stars. Following is David's descripti...
Every time i see a new chapter of this,
my heart skips a beat. I'm so enjoying this. Thank you for providing such an entertainment. If i may be so bold, where can one get those lovely clear jewels? Ondrej
Did I miss a chapter that told us which projection method
Which projection method was used to make the planisphere disc? Is it calibrated for the geographical location of the final owner? Or are the stars too far away to make a difference? Regards, MTF
Jewels & Planisphere
Jewels used for watches are too thin for clock use, the jewels I am using are Swiss made and used in other industries where low friction bearing surfaces are needed, I purchase them from the Swiss Jewel Co. in Philadelphia. The dimensions of the jewels I ...
