Spreadsheet for reducing BVRI data (Change Log)   NEW

How to export a WebObs-compatible upload file from the BVRI spreadsheet      .docx version     text version

PEP Projects

PEP Campaign on alpha Cyg variables

For questions about PEP Projects, please email PEP SIG leader Tom Calderwood using the contact form.

Photometer Manuals

Please click on the link to download the Operating Manual for your photoelectric photometer.

November 7, 2008

September 22, 1980

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
187 Concord Avenue, Cambridge, MA 02138 USA
Tel. 617-354-0484

SPECIAL ALERT NOTICE TO PEP OBSERVERS

In a recent letter from Dr. Richard Wade of the California Institute of Technology, he wrote:

Note: This Notice was originally titled:
SPECIAL AAVSO ALERT NOTICE TO AAVSO PHOTOELECTRIC OBSERVERS

It has been given the somewhat odd name "Alert Notice PEP #00" in 2016 so it will fit in with the other special PEP Alert Notices created by Aaron Price in 2001-2004. Eventually all of these special PEP Alert Notices will be renamed to something more consistent with Alert and Special Notice procotols. EOW 5/5/2016

December 22, 1993

October 4, 1991

Note: This Notice was originally titled:
SPECIAL AAVSO ALERT NOTICE TO PHOTOELECTRIC PHOTOMETRISTS MULTIWAVELENGTH MONITORING OF 2349+28 II PEGASI

It has been given the somewhat odd name "Alert Notice PEP #0" in 2014 so it will fit in with the other special PEP Alert Notices created by Aaron Price in 2001-2004. Eventually all of these special PEP Alert Notices will be renamed to something more consistent with Alert and Special Notice procotols. EOW 10/27/2014

PEPObs was developed from legacy code used to reduce photoelectric photometry submitted to the AAVSO PEP program.  We have retained most of the original fields for backwards compatibility with old PEP reports.  What follows is a guide to  fields in the online form with formatting instructions.  In the examples, the quotes ("") should not be included.

January 4, 2013: Dr. Bob Zavala (U.S. Naval Observatory, Flagstaff) has requested AAVSO assistance in obtaining multicolor photometry of the bright triple system b Per in order to prepare for and detect a possible eclipse of the AB components by the C component predicted for 2013 January 23. At 4.5V, b Per, which is also a radio source, is an excellent target for photoelectric photometrists and DSLR observers.