M57, shot with a Canon 10D on a Celestron C-11 11" SCT at F/10. 10 two minute images where stacked in Images Plus. An IDAS light pollution filter was used. Autoguided with an ST-237A mounted on a Televue 85. Mount is a Losmandy G-11 with Gemini. Focused with DSLR Focus. 10 dark frames where averaged and subtracted.