Celestron Compustar Bedienerhandbuch PDF herunterladen (Seite 40)

away from the Milky Way. Odds approach essentially 100% as one images subjects

progressively closer to the Milky Way.

Another wonderful feature about these cameras is that the much larger imaging chip can be used

to calibrate the autoguiding software for making guiding corrections using the guide chip (many

autoguiding software programs allow you to chose which chip to use during the calibration).

This means that there is little fear of moving the calibration star completely off the chip. The

good news is that the SBIG self-guiding CCD cameras are extremely easy to use with the

Compustars once the autoguiding relay box described above has been constructed. The SBIG

cameras have a female DB-9 port on their casing for output of the self-guiding commands. SBIG

supplies an adapter plug with a male DB-9 connector on one side and a female RJ-11 port on the

other. This adapter properly connects the pins of the CCD camera‟s DB-9 connector to those of

its female RJ-11 port such that its output is converted to the ST-4 language. Thus, all that has to

be done is to connect the adapter to the CCD camera (Figure 19A), plug the RJ-11 modular jack

on the relay box into that adapter (Figure 19B), connect the DB-9 connector on the relay box to

the central port on the Compustar computer module (Figure 16), and proceed as usual.

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Celestron Compustar Bedienerhandbuch Seite 40