Startrails - lithgow

A weekend away in Lithgow with my friend Chris and some fun star trails at blast furnace park, in Lithgow...

 

I have plenty of more shots from here.. it was a great spot... except the council has lit the old buildings with flood lights which spoiled many star trail opportunities...

 

This shot was me hiding behind a big old wall and shooting directly up, in the shadow of the wall the stars became clearer.. you can see some light on the plants on the top of the wall..

 

I always thought that the diverging curves was a lens distortion, but I have been reliably informed that this the equatorial thingie.. the top is towards the south celestial pole and bottom to the north celestial pole, and in between the stars create a straight line... There probably is a name for this phenomenon.. someone will tell me.... Celestial equator.. thanks ..steph....

 

Also I read somewhere there is a rule of lens lengths and time of shots to capture the stars with no apparent motion.. does anyone know what this is?.... thanks

 

ISO 400, 16mm, f/2.8, 30secs x 82 shots stacked using startrails software

Done