Celestron CPC Series Bedienerhandbuch PDF herunterladen (Seite 50)

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You can control your NexStar telescope with a computer via the RS-232 port on the computerized hand control and using an optional

RS-232 cable (#93920). Once connected, the NexStar can be controlled using popular astronomy software programs.

Communication Protocol:

NexStar-i communicates at 9600 bits/sec, No parity and a stop bit. All angles are communicated with 16 bit angle and communicated

using ASCII hexadecimal.

Description PC Command ASCII Hand Control Response

Notes

Echo Kx

Useful to check communication

Goto Azm-Alt B12AB, 4000

10 characters sent. B=Command,

12AB=Azm, comma, 4000=Alt. If

command conflicts with slew limits,

there will be no action.

Goto Ra-Dec R34AB, 12CE

Scope must be aligned. If command

conflicts with slew limits, there will be

no action.

Get Azm-Alt Z

12AB, 4000#

10 characters returned, 12AB=Azm,

comma, 4000=Alt, #

Get RA-Dec E

34AB, 12CE#

Scope must be aligned

Cancel Goto M

Is Goto in Progress L

0# or 1#

0=No, 1=Yes; "0" is ASCII character

zero

Is Alignment Complete J

0# or 1#

0=No, 1=Yes

Commands below available on

version 1.6 or later

HC version V

1 6 #

Version 1.6

Stop/Start Tracking Tx

x = 0 (Tracking off)

x = 1 (Alt-Az on)

x = 2 (EQ-N)

x = 3 (EQ-S)

Alt-Az tracking requires alignment

32-bit goto RA-Dec r34AB0500,12CE0500

32-bit get RA-Dec e

34AB0500,12CE0500#

The last two characters will always be

zero.

32-bit goto Azm-Alt b34AB0500,12CE0500

32-bit get Azm-Alt z

34AB0500,12CE0500#

The last two characters will always be

zero.

The cable required to interface to the telescope

has an RS-232 male plug at one end and a 4-4

telephone jack at the other end. The wiring is

as follows:

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 60 61

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