Beginning Telescope Making


Making a 4.25 Inch Dobsonian Reflector Telescope




I. Introduction


II. The Focal Length


III. The Grinding Tool


IV. The Mirror Blank


V. Rough Grinding The Mirror


VI. Fine Grinding The Mirror


VII. Pouring The Pitch Lap


VIII. Polishing The Mirror


IX. The Foucault Tester


X. Figuring And Testing The Mirror


XI. Aluminizing The Mirror


XII. The Mirror Cell


XIII. The Secondary Mirror


XIV. The Spider 


XV. The Tube


XVI. The Focuser


XVII. The Eyepieces


XVIII. The Mount


XIX. The Finder


If you have any comments, you can send email to me Mitchell Schoenbrun at