jbminster

focusing the ZWO ASI120MC on my SkyProdigy 130 telescope would require me to bring in the camera a few mm closer than the forward range of the focuser. I have not tried to insert an (extender or a Barlow?) but will do so when the sky is clear. Contrarily,, with the all-sky lens coming with the camera is focused at infinity after taking the lens a couple of mm out by unscrewing the lens and re-tightening. With a pollution filter this yield good start trails...I guess that lens was designed to catch migrating birds!! ;-)