Celestron 9.25 inch F/10 SCT, SBIG ST8E, L:60m, RGB:5m, 2X binned
NGC6781
Amateur CCD Astronomy
By Richard D. Jacobs, M.D.
By Richard D. Jacobs, M.D.
Celestron 9.25 inch F/10 SCT, SBIG ST8E, L:60m, RGB:5m, 2X binned