Binned 2x, 240 second exposure.

Final configuration: APADASCT (AP SCT Adapter) mounted on the SCT Adapter Plate (where normally a visual back is mounted); a 2 inch nosepiece installed on the camera and the Antares reducer attached directly to it, which reduced the recommended 79mm spacing to 47mm and resulted in a reduction factor of approx. 0.61x. Click on the original size to examine the stars in the corners. See the comparison in the next frame.

20101212_Antares-test-3.75in-bin2x-1_001-ddp.jpg