How to connect GIOTTO and attach ALTO to front of your telescope

To install ALTO on your telescope and connect it to GIOTTO, first remove the plastic thumbscrews from GIOTTO (the ones used to to attach GIOTTO to front of your telescope – these will not be needed when you used with ALTO). Connect the Cable Locking Clip by attaching it to the GIOTTO with the M6 screw, as shown in the image. This clip is used to lock in place the USB and 12V power cables that connect ALTO to GIOTTO.

ALTO is designed to connect to telescopes dovetail bars by adding the optional PLLMORVLP PLUS dovetail clamp. Vixen or Losmandy style dovetail bars already present in many telescopes (like SCT, Aplanatic SCT, RCT, etc). If your telescope has a short bar (for example on a refractor or Newtonian) you can easily add a longer dovetail bar to let you clamp ALTO just above or below the front end of your tube.

In the bottom part of ALTO body you can find different M6 threaded holes that allow you to attach the optional PLLMORVLP PLUS dovetail clamp to ALTO. Attach the optional PLLMORVLP PLUS clamp to the bottom side of the ARCO with the M6 screws that are included in the PLUS clamp box.

If you don’t want to add the optional PLUS clamp but you want to attach the ALTO directly to your telescope, we suggest you to attach it to a metallic element (that will be important to dissipate the heat created by ALTO motor during use) and you will also have to identify the best locking position in order to safely and securely allow the GIOTTO rotation.

In order to attach GIOTTO to ALTO, take the M6 screws with washers and o-ring (that are included in the ALTO box) and insert them in the ALTO arm as you can see in the picture.

Now you can connect ALTO with the optional PLUS clamp to a Vixen-style or Losmandy-style dovetail bar and this will set GIOTTO in front of your telescope.

The GIOTTO illuminated flat panel has to be larger that the external diameter of the front ring of the OTA tube or dew shield and, since GIOTTO illuminated flat panel has to be centered on the telescope optical axis, you can:

1. use the PLUS clamp to lock ALTO along the Vixen-style or Losmandy-style dovetail bar in order to attach GIOTTO just in front of your telescope OTA or dew shield.
2. use the buttonhole in the ALTO’s arm to secure GIOTTO in the best (vertical) position, by making sure GIOTTO panel is centered in respect to the OTA.