STAINLESS STEEL FINE TUNING SPACER RING - T2 THREAD 0.3mm Spare part This results in the exposure

This results in the exposure time of each channel having a ratio of 1:1:1

SharpStar AL-140ED f/6

It is collimatable by using 3 grub screws and the offset can be adjusted by using the central spring loaded screw

ASCOM driver to allow the control of camera rotation from third party software

in one or two corners the stars are not pinpoints

STAINLESS STEEL FINE TUNING SPACER RING - T2 THREAD 0.3mm Spare part This results in the exposureThe TS Optics T2 0. 3mm stainless steel fine tuning spacer rings allow for fine adjustment of back focus distance with much higher precision than with T2 extension tubes. Furthermore, in most cases the rigidity is higher than with variable extension tubes. Specifications Suitable for: T2 thread Thickness 0. 3 mm Material Stainless steel Inner diameter 42. 1 mm SKU T2Abstimmring03