Neil Wyatt | 01/12/2018 17:25:09 |
![]() Moderator 16740 forum posts 689 photos 76 articles | This is my latest 3D printed creation.
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Ady1 | 01/12/2018 17:36:26 |
![]() 3463 forum posts 513 photos | Nice one Neil Whats a solar tracker? |
Neil Wyatt | 01/12/2018 20:02:27 |
![]() Moderator 16740 forum posts 689 photos 76 articles | It was for a pair of retired teachers who are into meteorology. One of their activities was to get kids to record the alt(itude) and Az(imuth) of the sun through the school day. You project the sun as a dot on the white screen and read off the horizontal and vertical angles. It's a sort of very basic theodolite or sun compass. Neil |
Ady1 | 01/12/2018 23:13:09 |
![]() 3463 forum posts 513 photos | And at the moment of highest altitude, due south (in N hemisphere) is your Longitude Easy peasy, If you have an accurate clock |
John Haine | 02/12/2018 08:13:05 |
2693 forum posts 138 photos | The next project Neil! A 3D printed H1. |
john carruthers | 02/12/2018 08:33:31 |
![]() 597 forum posts 175 photos | When I first started astronomy I used a mechanical time switch on a hinged board for very crude tracking. |
Neil Wyatt | 02/12/2018 22:37:52 |
![]() Moderator 16740 forum posts 689 photos 76 articles | A relatively new approach for tracking with a dobsonian is a flat plate which runs a section of a circle or eclipse on a pair of rollers to equal a 'cone' with its axis on the polar axis. They are remarkably compact and will track for about an hour to an hour an a half. I'm tempted to make one for my 10" dob, even if it's only good enough for planetary work I should get an major step up in resolution going from a 6" scope. Neil |
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