Initial Commit

.gitignore

@@ -0,0 +1,2 @@
+Sliced
+GCode

Bahtinov Mask/Bahtinov_EOS_70-300.scad

@@ -0,0 +1,6 @@
+include <_bahtinov.scad>;
+
+daperture=55; // aperture diameter
+focal=300; // focal length of the lens or telescope
+dintcap=66; // internal diameter of the cap
+heightcap=12; // height of the cap(=tcap if flat mask)

Bahtinov Mask/Bahtinov_ST80.scad

@@ -0,0 +1,6 @@
+include <_bahtinov.scad>;
+
+daperture=80; // aperture diameter
+focal=400; // focal length of the lens or telescope
+dintcap=102; // internal diameter of the cap
+heightcap=20; // height of the cap(=tcap if flat mask)

Bahtinov Mask/_bahtinov.scad

@@ -0,0 +1,117 @@
+/* BATHINOV-PARAMETRIC-ENGLISH-V2
+by
+Philippe LECA - 2015-07-24
+http://www.astrokraken.fr
+leca.philippe@neuf.fr
+
+Updates :
+- number of grooves calculated according to focal length
+- useful ressources and comments
+
+Very useful ressource :
+http://astrojargon.net/MaskGenerator.aspx
+
+The general rule to holes width is f/s=150-200,
+where  :
+    f is focal length,
+    s is hole step size.
+So for telescope with 1500mm focal length the step size is 1500/150=10mm 
+(5mm hole, 5mm for uncut space).
+If holes become too small the formula becomes 3f/s=150-200.
+eg for 800mm scope you need to cut 2400/s=200 s=2400/200=12mm 
+(6mm cut +6mm uncut).
+The angled cuts are placed at 40 degrees to each other.
+*/
+
+// general paarmeters ---------------------------
+angle=22; // groove tilt angle
+tmask=2.5; // thickness of the mask
+tcap=2.5; // thickness of the cap's walls
+daperture=80; // aperture diameter
+focal=400; // focal length of the lens or telescope
+bahtinovfactor=150; // usually 150 to 200
+
+// cap parameters ---------------------------
+
+dintcap=102; // internal diameter of the cap
+dextcap=dintcap+2*tcap; // external diameter of the cap
+heightcap=20; // height of the cap(=tcap if flat mask)
+
+// for MAK or SCT : central hole and ring --------
+dintcentralhole=0; // =0 if no central hole
+dcentralring=0; // =0 if no central ring
+
+// groove array parameters --------------------
+widthgroove=(focal/bahtinovfactor)/2; // groove width
+widthwire=widthgroove; // width of the "wires" between grooves
+excessgroove=2; // number of excessive peripherical grooves (2 by default)
+
+$fn=120;
+
+numberdraft=floor(daperture/(widthgroove+widthwire));
+numbergroove=(floor(numberdraft/2-excessgroove))*2+1;
+
+difference(){
+    union(){
+        // CENTRAL RING FOR MAK OR SCT ===================
+        translate([0,0,0])cylinder(d=dcentralring,h=  tcap);
+        // ARRAY ======================================
+        difference(){ // vertical array
+            union(){
+            translate([0,0,0])cylinder(d=daperture,h=tmask);
+            }
+            union(){
+                // half-disc
+                translate([0,-daperture/2-5,-1])cube([daperture/2+5,daperture+10,tmask+2]);
+                // groove array
+                for (i=[1:numbergroove]){
+                    translate([-daperture/2,-(numbergroove+1)*(widthgroove+widthwire)/2-widthgroove/2+i*(widthgroove+widthwire),-1])cube([daperture,widthgroove,tcap+2]);
+                }
+            }
+        }
+        difference(){ // right tilted array
+            union(){
+                translate([0,0,0])cylinder(d=daperture,h=tmask);
+            }
+            union(){
+                // quarter disc
+                translate([-daperture/2-5,-daperture/2-5,-1])cube([daperture/2+5,daperture+10,tmask+2]);
+                translate([0,0,-1])cube([daperture/2+5,daperture/2+5,tmask+2]);
+                // groove array
+                rotate([0,0,180-angle]){
+                    for (i=[2:numbergroove-1]){
+                    translate([-daperture/2,-(numbergroove+1)*(widthgroove+widthwire)/2-widthgroove/2+i*(widthgroove+widthwire),-1])cube([daperture,widthgroove,tcap+2]);
+                    }
+                }
+            }
+        }
+        difference(){ // left tilted tilted 
+            union(){
+                translate([0,0,0])cylinder(d=daperture,h=tmask);
+            }
+            union(){
+                // quarter disc
+                translate([-daperture/2-5,-daperture/2-5,-1])cube([daperture/2+5,daperture+10,tmask+2]);
+                translate([0,-daperture/2-5,-1])cube([daperture/2+5,daperture/2+5,tmask+2]);
+                // groove array
+                rotate([0,0,180+angle]){
+                    for (i=[2:numbergroove-1]){
+                    translate([-daperture/2,-(numbergroove+1)*(widthgroove+widthwire)/2-widthgroove/2+i*(widthgroove+widthwire),-1])cube([daperture,widthgroove,tcap+2]);
+                    }
+                }
+            }
+        }
+        // STIFFENERS =============================
+        translate([0,-widthgroove,0])cube([daperture/2,2*widthgroove,tmask]);
+        translate([-widthgroove,-daperture/2,0])cube([widthgroove*2,daperture,tmask]);
+    
+        // EXTERNAL RING AND CYLINDER CAP ========================
+        difference(){
+            translate([0,0,0])cylinder(d=dextcap,h=heightcap);
+            translate([0,0,tcap])cylinder(d=dintcap,h=heightcap);
+            translate([0,0,-1])cylinder(d=daperture,h=tcap+2);
+        }
+    }
+    // CENTRAL HOLE FOR MAK OR SCT ================
+    translate([0,0,-1])cylinder(d=dintcentralhole,h=tcap+2);
+}

Eyepiece Plug/1-25 Eye Piece Plug.scad

@@ -0,0 +1,23 @@
+/*
+ *  Astro Parts -- 1.25" Eyepiece Plug
+ * 
+ *  Copyright (c) 2021 Steve Cross <flip@foxhollow.cc>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+include <_eyepiece_plug.scad>
+
+make_1_25_eyepiece_plug();

Eyepiece Plug/_eyepiece_plug.scad

@@ -0,0 +1,43 @@
+/*
+ *  Astro Parts -- Generic Eyepiece Plug
+ * 
+ *  Copyright (c) 2021 Steve Cross <flip@foxhollow.cc>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+top_diameter_125 = 42;
+inner_d_125 = 31;
+inner_depth_125 = 16;
+
+wall_thickness = 2;
+
+module make_1_25_eyepiece_plug() {
+    make_eyepiece_plug(top_diameter_125, inner_d_125, inner_depth_125);
+}
+
+module make_eyepiece_plug(top_diameter, inner_d, inner_depth, thickness=wall_thickness) {
+    difference() {
+        union() {
+            translate([0, 0, thickness])
+                cylinder(h=inner_depth, d=inner_d);
+            cylinder(h=thickness, d=top_diameter);
+        };
+        translate([0, 0, thickness])
+            cylinder(h=inner_depth+3, d=inner_d-(thickness*2));
+    };    
+}
+
+$fn=360;

LICENSE

@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+  2. You may modify your copy or copies of the Program or any portion
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
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+
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+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
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+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

Lens Mount/_split_ring.scad

@@ -0,0 +1,132 @@
+/*
+ *  Astro Parts -- Generic Split Ring
+ * 
+ *  Copyright (c) 2021 Steve Cross <flip@foxhollow.cc>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+// [unit: mm] 
+// how many millimeters from the bottom of the lens mount point to the top of 
+// the dovetail bar. do **not** deduct the ring thickness from this number!
+bar_offset = 30;
+
+// [unit: mm]
+dovetail_width = 35;
+
+// [unit: mm]
+ring_inner_d = 76; 
+
+// [unit: mm]
+ring_w = 15;
+
+// [unit: mm]
+tab_w = 15;
+
+// [unit: mm]
+tab_bolt_shaft_d = 5;
+
+// [unit: mm]
+tab_nut_d = 10;
+
+// [unit: mm]
+tab_nut_h = 3;
+
+// [unit: mm]
+wall_thickness = 5;
+
+// [unit: mm]
+base_bolt_shaft_d = 6.75;
+
+// [unit: mm]
+// How far from the bottom of the base stand should the nut sit
+base_nut_offset = 10;
+
+// [unit: mm]
+// Diameter of the nut
+base_nut_diameter = 12.5;
+
+// [unit: mm]
+base_nut_height = 4;
+
+ring_outer_d = ring_inner_d + (wall_thickness*2);
+
+overall_width = ring_outer_d + (tab_w * 2);
+
+top_height = ring_outer_d/2;
+
+bottom_height = ring_outer_d/2 + bar_offset;
+
+fh_make_split_ring();
+
+module fh_make_split_ring_bottom() {
+
+}
+
+module fh_make_split_ring() {
+
+    difference() {
+        union() {
+            // outer ring
+            cylinder(h=ring_w, d=ring_outer_d, $fn=360);
+
+            // coupling tabs
+            cube2([wall_thickness*2, overall_width, ring_w]);
+
+            // bottom mounting post
+            translate([ring_inner_d/2, -dovetail_width/2, 0])
+                cube([bar_offset, dovetail_width, ring_w]);
+        }
+        
+        // punch out center of ring
+        translate([0, 0, -1])
+            cylinder(h=ring_w+2, d=ring_inner_d, $fn=360);
+
+        // punch out base bolt hole
+        translate([ring_inner_d/2-2.5, 0, ring_w/2])
+            rotate([0, 90, 0])
+            cylinder(d=base_bolt_shaft_d, h=bar_offset+5, center=false, $fn=360);
+
+        // punch out the base nut hole
+        translate([ring_inner_d/2-1, 0, ring_w/2])
+            rotate([90, 0, 90])
+            cylinder(bar_offset-base_nut_offset+1, d=base_nut_diameter, center=false, $fn=6);
+
+        // punch out L tab bolt hole
+        translate([-wall_thickness-1, ring_outer_d/2 + tab_w/2, ring_w/2])
+            rotate([0, 90, 0])
+            cylinder(d=tab_bolt_shaft_d, h=wall_thickness*2+2, center=false, $fn=360);
+
+        // punch out R tab bolt hole
+        translate([-wall_thickness-1, -ring_outer_d/2 - tab_w/2, ring_w/2])
+            rotate([0, 90, 0])
+            cylinder(d=tab_bolt_shaft_d, h=wall_thickness*2+2, center=false, $fn=360);
+
+        // punch out L the tab nut hole
+        translate([(-wall_thickness-2) - wall_thickness/2, ring_outer_d/2 + tab_w/2, ring_w/2])
+            rotate([90, 0, 90])
+            cylinder(wall_thickness+2, d=tab_nut_d, center=false, $fn=6);
+
+        // punch out the R tab nut hole
+        translate([(-wall_thickness-2) - wall_thickness/2, -ring_outer_d/2 - tab_w/2, ring_w/2])
+            rotate([90, 0, 90])
+            cylinder(wall_thickness+2, d=tab_nut_d, center=false, $fn=6);
+    }
+}
+
+module cube2(dimensions) {
+    translate([-dimensions[0]/2, -dimensions[1]/2, 0])
+        cube(dimensions);
+}

Objective Cap/Orion SpaceProbe 130EQ Cap.scad

@@ -0,0 +1,43 @@
+/*
+ *  Astro Parts -- Orion SpaceProbe 130EQ Object Cap
+ * 
+ *  Copyright (c) 2021 Steve Cross <flip@foxhollow.cc>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+// [unit: mm]
+outer_depth = 35;       // actual:  35.0 mm
+
+// [unit: mm]
+outer_diameter = 170;   // actual: 167.0 mm
+
+// [unit: mm]
+wall_thickness = 2; // [1:1:6]
+
+// [unit: mm]
+// inner_diameter = 151.7; // actual: 151.7 mm
+
+// [unit: mm]
+// inner_depth = 10;       // actual:  15.0 mm
+
+difference() {
+    cylinder(h=outer_depth+wall_thickness, d=outer_diameter + (wall_thickness*3));
+    translate([0, 0, wall_thickness])
+        cylinder(h=outer_depth+wall_thickness, d=outer_diameter);
+};
+
+
+$fn = 360;

README.md

@@ -0,0 +1,36 @@
+# Astro Parts
+
+![Preview](media/Preview.png)
+
+## About
+
+This is a collection of assorted astronomy related parts
+
+## Features
+
+## Recent changes
+
+## To-Do List
+
+## License
+Astro Parts is licensed under the GNU General Public License (GPL) v2 or later
+
+Copyright © 2021 Steve Cross
+
+>  This program is free software; you can redistribute it and/or modify
+>  it under the terms of the GNU General Public License as published by
+>  the Free Software Foundation; either version 2 of the License, or
+>  (at your option) any later version.
+>  
+>  This program is distributed in the hope that it will be useful,
+>  but WITHOUT ANY WARRANTY; without even the implied warranty of
+>  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+>  GNU General Public License for more details.
+>  
+>  You should have received a copy of the GNU General Public License along
+>  with this program; if not, write to the Free Software Foundation, Inc.,
+>  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Bahtinov Mask is licensed under Creative Commons - Attribution - Non-Commercial
+
+Copyright 2015 Philippe LECA (http://www.astrokraken.fr / leca.philippe@neuf.fr)

Vixen Dovetail/vixen_dovetail_bar.scad

@@ -0,0 +1,126 @@
+/*
+ *  Star Adventurer Upgrades - Vixen Dovetail Bar
+ * 
+ *  Copyright (c) 2021 Steve Cross <flip@foxhollow.cc>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+dis_color="#2f99a7";
+ 
+channel_height = 15;  // mm, actual: 15mm
+channel_width = 44;   // mm, actual: 44 mm
+channel_angle = 15;   // degrees, actual: 15°
+
+// how long the final bar is to be, in mm
+channel_length = 200; // [20:10:200]
+
+punch_hole_offset = 15;
+punch_hole_d = 6.75; // actual: 6.35 mm
+punch_head_d = 10;   // actual: 9.50 mm
+punch_head_h = 7.5;  // actual: 6.40 mm
+
+punch_slot_count = 4;
+
+$fn = 360;
+
+// flip_upside_down(channel_height)
+    make_vixen_dovetail_bar(channel_length);
+
+module make_vixen_dovetail_bar(length, width = channel_width)
+{
+    difference() {
+        make_base_vixen_dovetail_bar(length);
+
+        translate([channel_width/2, 0, 0])
+            make_all_slots();
+    }
+}
+
+module make_all_slots() {
+    length = (channel_length - (punch_hole_offset * (punch_slot_count+1))) / punch_slot_count;
+    // echo (length);
+
+    for (i = [1:punch_slot_count]) {
+        translate([
+            -punch_head_d/2, // shift to offset the width of the slot
+            (i*punch_hole_offset) + ((i-1)*length), // lay out lengthwise along the bar
+            0
+        ]) 
+        make_dovetail_slot(length);
+    }
+}
+
+module flip_upside_down(height) {
+    translate([0, 0, height])
+        mirror([0, 0, 1])
+        children();
+}
+
+module cylinder2(h, d) {
+    translate([d/2, d/2, 0])
+        cylinder(h=h, d=d);
+}
+
+module make_dovetail_slot(length) {
+    translate([punch_head_d/2, punch_head_d/2, 0]) {
+
+        hull() {
+            cylinder(h= channel_height + 2, d= punch_hole_d);
+
+            // translate([0, length-punch_hole_d/2, 0])
+            translate([0, length-punch_head_d, 0])
+                cylinder(h= channel_height + 2, d= punch_hole_d);
+        }
+
+        translate([0, 0, -1])
+        hull() {
+            cylinder(h=punch_head_h+1, d=punch_head_d);
+
+            // translate([0, length-punch_hole_d/2, 0])
+            translate([0, length-punch_head_d, 0])
+                cylinder(h=punch_head_h+1, d=punch_head_d);
+        }
+    }
+}
+
+module make_base_vixen_dovetail_bar(length, width = channel_width, height = channel_height, angle = channel_angle, oversize = 0) {
+    //   side_a
+    // ______
+    // |    /
+    // |   /
+    // |  / side_c
+    // | /
+    // |/
+    // angle_a
+    //
+    // side_c = side_b / cos(angle_a)
+    // side_a = sqrt(sq(side_c) - sq(side_b))
+    //
+
+    side_c=height / cos(angle); // echo(side_c);
+    side_a = sqrt(pow(side_c, 2) - pow(height, 2)); // echo (side_a);
+
+    translate([0, length, 0])
+    rotate([90, 0, 0])
+    linear_extrude(height = length)
+    polygon(points=[
+        // [x, z]
+        [0, 0], // bottom left
+        [side_a, height],  // top left
+        [width-side_a+oversize, height],  // top right
+        [width+oversize, 0] // bottom right
+    ]);
+ }

Vixen Dovetail/vixen_dovetail_plate.scad

@@ -0,0 +1,38 @@
+/*
+ *  Star Adventurer Upgrades - Vixen Dovetail Plate
+ * 
+ *  Copyright (c) 2021 Steve Cross <flip@foxhollow.cc>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+ 
+ channel_height = 15;
+ channel_width = 44;
+ channel_angle = 14;
+ 
+ channel_length = 150;
+ 
+ base_height = 20;
+ base_diameter = 70;
+ 
+ $fn = 360;
+ 
+ make_bar();
+ 
+ //cylinder(h=base_height, d=base_diameter);
+ 
+ module make_bar() {
+     cube([channel_width, channel_length, channel_height]);
+ }