telescopeѲptics.net   ▪   ▪   ▪  ▪ ▪▪▪▪ ▪ ▪  ▪   ▪    ▪     ▪      ▪       ▪        ▪         ▪          ▪           ▪            ▪ CONTENTS

APPENDIX 1 2 3 4: Telescope system specifications

                 D=diameter   f=f.l./D   K=conic   R=surface radius   S=separation   M=medium   A=air   RI=best image curvature   A4/A6=aspheric coefficients  T=tilt (deg.)

SUBAPERTURE_
CAT'S

D

f/  

8R18  

8K1

S1-M1

88R288

K2

S2 -M2

R3

S3 -M3  

00R40  

0S4 -M4

80R508

S5-M5

R6

S6/M6

R7

S7/M7

RI

1. Tele-extender corrector, Newton

200mm

4/8.4

-1600

-1

-754 A

-660

-

-6 F2

39

-0.15 A

38

-4 BK7

-30

-81.9-A

-

-

-

-

-300

2. Menisc. coma corr.  (paraboloid)

200mm

4

-1600

-1

-604 A

107

-

-14 BK7

107

-196 A

-  

-

-

-

-

-

-

-

180

3. Menisc. sphere corr.  

200mm

5

-2000

0

-764 A  

89

-

-21.2 BK7

93.6

-250.9 A

-  

-

-

-

-

-

-

-

150

4. Jones-Bird,         (sphere)  

200mm

5.9

-1563

0

-610 A

 331.7  

-

-5 BK7

-174.1

-0.6 A

-104

-6.6 F2

-178.1

-245.5 A

-

-

-

-

70

5. Jones-Bird, (paraboloid)

200mm

5.9

-1563

-1

-610 A

 -1000  

-

-5 BK7

-92

-0.6 A

-85

-6.6 SSK2

-194

-187.6 A

-

-

-

-

100

6. Ross corrector  

200mm

4

-1600

-1**

-747.5 A

 -86.7  

-

-3 BK7

-40.3

-1.6 A

-146.7

-4 BK7

146.7

-46.2 A

-

-

-

-

∞

7. Modified Ross  

200mm

4

-1612

-1**

-744.6 A

 -46.2  

-

-4.9 BK7

-32.2

-2.8 A

560

-2.8 BK7

102.3

-46.8 A

-

-

-

-

∞

8. Split meniscus  

200mm

3.7

-1606

-1**

-742 A

 -46.5  

-

-2.7 BK7

-214

-0.4 A

-53

-2 BK7

-28

-50.4 A

-

-

-

-

∞

9. Rosin astrograph 

10"

4

-90

-1.408

-40.77 A

-2.392

-

.35 SF11

-1.965  

.28 A

55.14

0.35 BK7

6.786

3 A

-

-

-

-

∞

10. Sphere corrector  

200mm

5

-2000

0

-740 A

-500

-

-6 K11

0

-2- 

500

-5 K11

0

-247.2 A

-

-

-

-

∞

11. Wynne

625mm

3.3

-3750

-1

-1693 A

-71.6

-

-4.9 NBK7

-93.3

-46.4 A

-152

-2 NBK7

-56.5

-104.3 A

-103.74

-6 NBK7

0

-34.32A

∞

12. All-spherical
    Gregorian

200mm 

17.9

-1600

0

-1067 A

440

0

260 A

166

8 BK7

-200

2.7 A

-166

5 BK6

200

894.5 A

-

-

∞

13. CCass. w/field corrector A

250mm

10

-2000

-1

-657 A

-1137

-5.15

718 A

0

5 BK7

121.5 

2.5 A

239

5 BK7

-239

139 A

-

-

∞

14. CCass. w/field corrector B

400mm

8.8

-2790

-1

-912 A

-1606

-5.365

1015 A

-615

8 N-FK5

- 322 

1 A

96.6

7 N-BK7

80.8

181.5 A

-

-

∞

15. Cass w/sph. secondary C

400mm

8.8

-3160

-1

-954 A

-2290

0

590 A

577

15 N-BK7

369 

8 A

-720

10 N-BK7

-430

771.8 A

 

 

∞

16. Cass w/sph. secondary D

400mm

5.9

-2400

-1

-721 A

-1954

0

452 A

0

7 BK7

367 

4.5 A

0

8 BK7

-361

400 A

-2860

4 BK7

∞

17. DK with integrated corr. A

300mm

8

-2168

-0.81

-682.4 A

-1464

0

524.6 A

0

4 BK7

258  

3.1 A

0

5 BK7

-258

362 A

-

-

∞

19. DK with integrated corr. B

300mm

7.6

-2130

-0.69

-658 A

-1546

0

639 A

-117

7 BK7

88  

11 A

-193

6 BK7

-131

205.3 A

-

-

∞

20. DK with integrated corr. C

300mm

8

-2880

-0.682

-795 A

-3290

0

877 A

592

9 BK7

-592 

1 A

124.5

6 BK7

82

169.6 A

-

-

∞

21. DK with integrated corr. D

300mm

7.7

-1616

-0.705

-538 A

-854

0

520 A

0

5 BK7

131 

5.5 A

0

6 BK6

-131

130 A

-630

5 BK7

∞

22. RC w/field corrector L

400mm

8.1

-2256

-1.123

-760 A

-1138

-5.74

944 A

0

8 BK7

-111 

6.8 A

-96

6.4 BK7

0

89.2 A

-

-

∞

23. RC with field corrector R

400mm

8.2

-2800

-1.23

-882 A

-1827

-9.9

1022 A

165

10 BK7

177

2 A

96

9 BK7

82

152 A

-

-

∞

24. Field-Maksutov

200mm

10

-1200

0

-422 A

130

0

-16 BK7

133.5

-2 A

-500  

2 A

133.5

16 BK7

130

554.8 A

-

-

-300

25. Klevtsov

200mm

10

-1200

0

-403 A

-73.8

0

-13.5 BK7

-68

-8 A

-910 

-9 BK7

-550

9 BK7

-910

8 A

-68

13.5 BK7

-160

-73.8

543.5 A

15. Gregorian with sub-aperture Schmidt corr.

8in 

11.4

R1

K1

S1/M1

R2

K2

S2/M2

R3

 S3/M3

A4 **

A6

A8

R4

S4/M4

RI

-33.33

0

-21.67 A

8.563

-0.34

5.066 A

0

0.166 BK7

0.00371

1.36E-5

4.374E-6

-150

22.72 A

6.2

16. Gregorian with sub-aperture Schmidt corr.

12in 

11.2

R1

K1

S1/M1

R2

K2

S2/M2

R3

A4

A6

A8

S3/M3

R4

A4

A6

A8

S4/M4

R5

S5/M5

RI

-50

0

-32.5 A

12.845

-0.3

7.6 A

125

-
0.001494

9.6E-7

6.4E-7

0.175BK7

-125

0.001494

-9.6E-7

-6.4E-7

0.35 BAF51

0

32.99 A

9.5

 

Home  |  Comments