Astro

Double	shows at least 13-14 high card points and a decent 5+ card suit
2	shows at least 4 hearts and another suit
2	shows at least 4 spades and another suit
2  2,  3  3	are all natural, but limited, due to the failure to double

Note: With 5-4 or 4-5 in the majors, use the bid that guarantees the 4-card suit!

After a double advancer can assess the side's defensive potential and pass if he has a good 8 or more points.�Otherwise, he bids 2 as an artificial waiting bid, and doubler will then bid his suit.�Or pass if the suit is clubs.�Advancer can alternatively bid a decent 6-card or longer suit that can play opposite a singleton.

After�2, or 2, bidding 2 of the implied major usually promises 4 or more cards. Otherwise, advancer makes the artificial bid of 2 over 2, and 2 over 2. If that turns out to be Astro bidder's long suit, he passes. Jumps by advancer are invitational.