Dear friends: In my last message I made some mistakes specially due to my poor English !! Sorry :-)) When I mentioned the periods are approximate I wrote "+-" but it should be ~ . 76 days for delta Sco is not the spread for another number I forgot!!!! The period is ~76 days. When I defined the second type of variation I wrote "tenth" instead of "tens". You must have figured it out from the rest of the message but it was very confusing so let me apologize again... Thanks to Stan Walker for poinitng this out !! Keep observing. Regards, Sebastian. PS: NRP= Non-Radial Pulsations --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://vsnet.grisoft.com). Version: 6.0.262 / Virus Database: 132 - Release Date: 12/06/01