A B C D E
1

secondary to ring

8.25

      
2

Focuser board thickness

0.25

      
3

Focuser height

1.40

      
4

Focuser slop

0.23

  

My heaviest eyepiece

1.60

5

Camera spare

0.00

  

Heaviest eyepiece (Nagler 31mm)

2.20

6

Total = L

10.13

  

camera+adapter+light eyepiece+1.25" adapter

2.19

7          
8

Mirror to secondary mirror

57.25

  

Lightest eyepiece+Adapter

0.69

9          
10

spider to center of secondary

5.25

      
11

focuser

2.25

      
12

Total cage height

7.50

      
13          
14

d=Area of 100% illumination

0.24

  

Secondary minor axis

2.60

15

Calculated minor axis

2.45

      
16          
17

Cage I.D.

16.50

      
18

Ring thickness

1.25

      
19

Cage O.D.

19.00

      

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