Flamsteed Astronomy Society

Coronado Procedure

page 7 of 10

14    The telescope is now fitted with a motorised drive, which has complicated the set-up procedure a bit. There is no longer a manual fine adjust on the Right Ascension axis (side to side), although there is still a manual adjust on the Declination axis (up and down). Even at the highest speed setting, the motor drive is not fast enough to search for the Sun if it is out of the field of view. You may have to slacken the clamping screw for RA and carefully adjust the angle about the polar axis by light pressure with your fingers. Once you have located the Sun anywhere in the field of view, don’t try to centre it manually. Lock the RA clamp screw immediately and centre the image using the motor controls as described in the next section.