Setting A High Star

Normal 8x8 Sudoku rules apply, place the digits 1-8 once each in every row, column and region given. Normal thermo rules apply, digits on a thermometer must increase starting at the bulb end. Normal killer cage rules apply, digits in a cage must sum to the total given and have no repeats. Digits seperated by a black dot are in a ratio 1:2 Cells marked with a grey circle must be odd. Cells marked with a grey square must be even. And last but not least, there is exactly one '3 in the corner' in this grid.