Can I sync my iCal calendar to my husband's Google Calendar?

I have read many discussions about this here and on other forums, but can't find an answer that works for what I'm trying to do.

I use iMac, iPhone and iPad and keep track of our family's many activities on 3 iCal calendars (so I can use the different colors to track what each kid is doing.) I would like my husband to be able to view and modify these calendars. He is on an Android device, uses Google Mail and a PC.

I can easily sync his Google calendar to my iCal using advice from this Google forum (http://support.google.com/calendar/bin/answer.py?hl=en&answer=151674). I cannot figure out how he can sync my calendar to his Google calendar.

I have exported my iCal calendar and he has imported it into Google calendar just fine, but it is a static picture of the calendar when I export it so doesn't really help keep him up to date.

I have shared the calendar per the link by Roger Wilmut1 (link: http://help.apple.com/icloud/#mm6b1a9479) on this discussion: https://discussions.apple.com/thread/4599543?start=0&tstart=0. However iCloud is requesting an iCloud account from him to "Join" the calendar in Google calendars.

If he set up an iCloud account (how?? I don't know) could he then access my iCal and sync it into his Google calendar?

I'm trying to figure out if I should just give up on iCal and switch to a Google calendar. It is working so nicely right now with my iPhone and iPad I would love to just keep using iCal if possible. Most of the advice I have seen describes how I can link to his Google calendar (done, but not what I want to do) or says I should move to Google Calendar and stop using iCal.

Would appreciate any solutions you might offer.