Did they get you in one of those brief 45mph zones on the 60mph strectch of Rt 29? Those get contested a lot and there have been some arguably overzealous deputies, especially in Nelson. Depending on how fast you were going and how you appear in court you may just get off. May want to calibrate your speedometer. If you can demonstrate unknowing speed issue that you believe you corrected....you will probably be ok. Just stating "ooops" may not be enough if the judge is tough, but I suspect at minmum you will get a ticket reduction. Go regardless.....if the deputy doesn't show and you contest.....you win!
P.S. Unless you are fighting a stiff ticket, I wouldn't get a lawyer in your case.....it's seems pretty straight forward and your record means more to judge than any attorney that will speak for you.