Hallo Thomas,
kein Problem:
Code
General parameters for Dall-Kirkham
Primary mirror diameter .................. 300.0000 mm
Primary mirror focal length .............. 936.0000 mm (f/3.1)
Primary mirror conic constant ............ -0.7006
Primary mirror sagitta ................... 6.0096 mm
Secondary minimal diameter ............... 76.4550 mm
Secondary diameter ....................... 80.3504 mm
Secondary Radius of curvature ............ 644.7018 mm
Secondary Magnification .................. 3.8462
Secondary mirror conic constant .......... 0.0000
Secondary mirror sagitta ................. 0.6259 mm
System focal length ...................... 3600.0000 mm (f/12.0)
Back focal length ........................ 220.0000 mm
Linear Obstruction ....................... 26.7835 %
Obstructed Area ......................... 7.1735 %
Distance secondary from system focus ..... 917.4603 mm
Distance secondary from prime focus ...... 238.5397 mm
Distance secondary from primary .......... 697.4603 mm
Radius of field curvature ................ -412.5228 mm (curvature is toward sky)
Originally written by Jean Texereau.
Translated and modified by Will Remaklus.
Javaskript version by Tomas Maruska
Modified and extended C++ version by Heiner Otterstedt <heiner(==>)otterstedt.de>
Alles anzeigen
Pfeiltiefe für des FS mit D=114mm und ROC=644.7mm ist: 2.52mm
Den genauen ROC musst Du sowieso per Foucault bestimmen.
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">Zitat:<hr height="1" noshade id="quote">Die Rückseite habe ich auch schon mit einem 90mm Diamandbohrer bis auf 3mm ausgebohrt und die Vertiefung mit Wachs ausgegossen.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Ist natürlich auch eine clevere Methode![;)]
Frohes Schaffen wünscht
Kai