beautypg.com

Celestron C8-S User Manual

Page 43

background image

43

Telescope

Model

Standard

Cassegrain f/10

With

Reducer/Corrector
f/6.3

C5-S

49" (1250mm)

31" (788mm)

C8-S

80" (2032mm)

50.4" (1280mm)

Focal

Length &

Speed

C9.25-S

93" (2350mm)

58" (1481mm)

C5-S

13 x 10 (arc
min)

20.5 x 15.7 (arc min)

C8-S

8 x 6.1 (arc
min)

12.6 x 9.7 (arc min)

ST 237
F.O.V.*

C9.25-S

6.9 x 5.3 (arc
min)

11 x 8.4 (arc min)

* Field of view calculated using SBIG ST 237 CCD camera with 4.7mm x 3.6mm
chip.



Auto Guiding


The Advanced GT telescope has a designated auto guiding port for use with a CCD autoguider. The
diagram below may be useful when connecting the CCD camera cable to the telescope and calibrating the
autoguider. Note that the four outputs are active-low, with internal pull-ups and are capable of sinking 25
mA DC.

Table 7-3

This manual is related to the following products: