![]() Factor Determining Telescope Performance.Catadioptric Design Has Relatively Large Central Obstruction And Might Reduce Contrast Slightly (Basic Theory Is 28% Reduction In Brightness & Contrast For SCT, 18% In Maksutov Cassegrain & 20% In Visual Reflector)Ĭatadioptric Involve Folding Optical Path Multiple Time To Achieve Compact For Aperature Telescope It Also Provide Chromatic Aberation Free Image. This Design Allow More Compact Telescope For Aperture. Catadioptric Are Combination Compound Telescope (Folding Optics).Spherical Mirror Gives Good Image If Focal Ratio Exceed F/10, Anything Under Will Require Spherical Lens Corrector (Known As Jones-Bird Newtonian) Parabolic Mirror Can Give Diffraction Limited Optics But Cost More. Reflector Can Be Built With Spherical, Bird Jones Or Parabolic Mirror. Reflector Does Not Suffer From Chromatic Aberation And Provide Almost Similar Contrast To Refractor. Mirror Are Easier To Manufacture And Cost Less Than Lens (Bigger Aperature For Price). Precision Polish Reflecting Mirror Will Focus Light From Mirror To Increase Image Brightness And Detail. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |