Dear colleagues, I would forward a request e-mail from Prof. Klaus Beuermann. Best regards, Daisaku Nogami --- Daisaku NOGAMI <nogami@kusastro.kyoto-u.ac.jp> Begin forwarded message: Date: Tue, 2 Nov 2021 08:58:45 +0100 From: Klaus Beuermann <k.beuermann@t-online.de> To: vsnet-ecl-owner@ooruri.kusastro.kyoto-u.ac.jp Subject: [vsnet-adm 210582] planetary hypothesis for O-C variations of CVs and PCEBs Dear colleagues, I am working on the cause of the substantial O-C variations in cataclysmic variables and post-common-envelope binaries. I am sure, you have observations of at least some of the objects, we are following up and I wounder, how I can access such data of yours, which requires to search for an object by name or coordinates. Currently I am interested in HU Aqr, NN Ser, HW Vir, QS Vir, V470 Cam=HS0705+66, CSS080502, CSS06653, CSS041631 WD1333, . . . Would your group be able to provide eclipse data (raw light curves or mid eclipse times) on such objects? Thanks in advance______ Klaus Beuermann Institute for Astrophysics (formerly Goettingen Observatory), Goettingen, Germany