My Ds is nearly 10 months old and goes down for a nap in the morning within 2 hours of waking up.
He will sleep for minimum of 90 minutes but can sleep for 2 hours or more (I usually end up waking him up after 2 hours as we need to go out etc) - is this normal so soon after a good 12 hours kip at night?
He then tends to have another nap after lunch (for about an hour).
He goes to nursery 3 days a week and usually has 1 (2 maximum) naps there rarely lasting longer than 45 minutes - and his first nap is usually after 11am even though he has been up since 6.30ish!