Addendum - Tables

EAF Focus Table TSO 90/600 APO

updated: 2023-09-22

Review Required

Optimal EAF Focuser Start Positions for the Main Camera (active configurations only)

Label

Old Label

Active

Specifier

L: Scope or Lens

L: Tube Length [mm]

L: FoL [mm]

C: Camera

E: Tube Ext. [mm]

O: Other

T: Tail Length [mm]

V: Focuser Point [mm]

V: EAF Focus [steps]

EAFMax [steps]

Max Travel Distance [mm]

TS600AS294

Config04c

Y

TS600AS294E100T77

TSO APO 90/600

283,96

599,00

ASI294MC-Pro

100,00

M63 WO Rotator

77,95

59,84

19307

28661

88,83

TS600AS294-E5

Config02

Y

TS600AS294E50T122

TSO APO 90/600

283,96

599,00

ASI294MC-Pro

50,00


122,50

65,29

21066

28661

88,83

TS600AS294-EP06

Config06

Y

TS600AS294EP6E100T105

TSO APO 90/600

283,96

599,00

ASI294MC-Pro

100,00

Eyepiece Projector 6mm

105,50

32,29

10418

28661

88,83

TS600AS294-EP10

Config06a

Y

TS600AS294EP10E100T105

TSO APO 90/600

283,96

599,00

ASI294MC-Pro

100,00

Eyepiece Projector 10mm

105,50

32,29

10418

28661

88,83

TS600AS294-h


Y

TS600AS294E100T68

TSO APO 90/600

283,96

599,00

ASI294MC-Pro

100,00


68,95

68,84

22211

28661

88,83

TS600AS294-R

Config05

Y

TS600AS294R75E50T69

TSO APO 90/600

283,96

599,00

ASI294MC-Pro

50,00

Riccardi 0,75 Reducer

69,50

118,29

Invalid

28661

88,83




Label

Old Label

Active

Specifier

L: Scope or Lens

L: Tube Length [mm]

L: FoL [mm]

C: Camera

E: Tube Ext. [mm]

O: Other

T: Tail Length [mm]

V: Focuser Point [mm]

V: EAF Focus [steps]

EAFMax [steps]

Max Travel Distance [mm]

TS600FUXT3

Config12

Y

TS600FUXT3E100T83

TSO APO 90/600

283,96

599,00

FU-XT3

100,00


83,40

54,39

18589

28661

88,83


EAF Focuser Range on TSO 90/600 Telescope

Warning: the measured step sizes are not 100% accurate and apply only after resetting the EAF (GoTo 0)


Focuser Position on Scale

Focuser Tail Length inc. M63/M48 Adapter

Focuser Tail Length 
(End of  Tube to 0 mark) in [mm]

EAF Step Position 

MIN (totally in)

4.47 mm

0

00000

0.0 cm

7.76 mm

2.14

 800

40 mm

47.76 mm

42.14

14550

80 mm

87.76 mm

82.14

28070

MAX (totally out)

88.83 mm


28613 / 28661 / 28767

Focuser Gear Ratio (EAF)

  • 342 steps / mm (or 365 EAF positions / cm)
  • or 0.002926 mm / step
  • Measuring inaccuracy: 0.54%


Measured Focus Points during Oberservation at 10°C and using Config04c (L:1_E:100_C:1_O:-_T:83.9_F:UHC2) with an UHC 2" Filter:

Measurement #

Configuration

Outside Temperature

EAF Best Focus Step Position 

1

Config04c - L:1_E:100_C:1_O:-_T:83.9_F:-

15°C

22403

2

Config04c - L:1_E:100_C:1_O:-_T:83.9_F:UHC2

11°C

22392

3

Config04c - L:1_E:100_C:1_O:-_T:83.9_F:UHC2

11°C

22383

4

Config04c - L:1_E:100_C:1_O:-_T:83.9_F:UHC2

10°C

22360

5

Config04c - L:1_E:100_C:1_O:-_T:83.9_F:UHC2

09°C

22352

6

Config04c - L:1_E:100_C:1_O:-_T:83.9_F:UHC2

09°C

22345

Average Step Position

~ 22373

Created with the Personal Edition of HelpNDoc: Easy EPub and documentation editor