The PISCO software allows you to perform a simple control of a two axis telescopes. The objective is to make available a virtual hand controller through the PC interface. This virtual hand-controller does not permit to perform large moves over 30°. However, many things can be done with such a telescope control function in terms of automatic image acquisition with the Audine camera. Let five a few examples:

The PISCO telescope interface does not permit to know the absolute position of the telescope and all the moves are performed relativly to the last telescope psotition. Furthermore, in order to provide an interface compatible with the largest number of telescopes, the interface does not control directly the telescope motors, but simply the hand controller. One way or an other, you will have to "double" the push buttons of your hand controller with the commands coming from the PISCO electronic interface.

On the figure above, you can notice that the push button, in most of the hand controllers, simply brings a given signal to the mass. With the PISCO interface, this function is performed by an electronic switch. The commuting of the switch is ensured by a signal coming from the PC.

As an example, the figure below displays the cabling of the Takahashi hand controller (equatorial mount EM200 or NJP160), as seen from the hand controller wire side (mini DIN plug with 8 male pins).

The pin number 11 corresponds to the mass. Pins 4 and 10 correspond to positive and negative right ascension push buttons. Pins 7and 13 correspond to positive and negative declination push buttons.

Takahashi mounts are well suited to the PISCO telescope interface since there is no wire soldering to be performed. In the case of the EM200 mounting, you must unplug the hand controler and connect the electronic interface (plus CONTROL BOX).

In the case of the NJP160 mounting, a special cable will have to be designed, with on one side the mini DIN plug with 8 pins and on the other side a plug of your choice. In the example presented here, a DB15 plug has been chosen (refered as D2 in the following electonic diagrams). The mini DIN plug must be connected to the AUTO GUIDE plug on the NJP160 hand controller. The advantage of this configuration compared to the EM200 is that you can control the telescope with both the manual hand controller and the electonic hand controller.

For the electronic diagram and the PISCO telescope interface programming, click here