elongated stars at one side only

[alacant]

Hi

I get round stars centre and right but getting elongated further left. I think it's the focusser (?). It has 120º screws everywhere but I wouldn't know where to begin. Any ideas anyone? I post a single snap. I think it's about 30s. TIA.

 

[sloz1664]

Hi

Loosen the three 120 degree screws and ensure the adapter is firmly pushed up to the focuser and tighten the three screws. It may be best to point the telescope downwards so that gravity helps in holding the adapter square inside the focuser.

Steve

[Waldemar]

To prevent that kind of 'hanging' these: http://www.firstlightoptics.com/adapters/hotech-2-sca-t-adapter.html really work wonders.

Waldemar

[alacant]

Ah, OK. So the casuse is that the camera is not square?