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PEP

PEP Projects

Neglected Red Supergiants

The following bright RSGs are in need of photometry. All are in the latest target file.

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PEP Test Stars

Over the years, some stars in the AAVSO database proved not to be variable. These "constant" stars are no longer of interest, astrophysically speaking, but they are convenient targets to check the quality of your photometry. Thirteen northern stars are listed below (southern "constants" are harder to come by).  All are in the master list of PEP targets. Since these stars are still in the AAVSO system, you can submit and examine data for them. The greater the B-V difference, the more strongly the calibration of your system will be challenged.

PEP Observer's Guide now in French

Due to another outstanding volunteer effort by Bernard Candela, we are now able to offer a French language translation of the Photoelectric Photometry Observer's Guide.

Many thanks once again Bernard!

 

 

Alert Notice PEP #A: Special Alert Notice to PEP Observers [HR 913 = HD 18894]

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:

Alert Notice PEP #00: Special Alert Notice to AAVSO Photoelectric Observers [2337+56 Nova Cassiopeiae 1993] [V705 Cas]

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

Alert Notice PEP #0: Multiwavelength monitoring of 2349+28 II Pegasi

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 user guide

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.

Alert Notice 476: Multicolor photometry of triple system b Per requested

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.

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AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484