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photometry

Long-term photometric campaign on the Luminous Blue Variable P Cygni

New: Preliminary results, 2010 November 4

The 2010 report by E. Pollman and T. Bauer is available from this link.  For the 2009 report, see this link


AAVSO Special Notice #131, November 7, 2008

Alert Notice 425: Monitoring of HBC 722 and VSX J205126.1+440523 Requested

October 1, 2010: Dr. Colin Aspin (U. Hawai'i) has requested the help of AAVSO observers in performing long-term photometric monitoring of the two new young stellar objects (YSOs) in Cygnus, HBC 722 and VSX J205126.1+440523 (see AAVSO Special Notice #216).  

List of target, comparison, and check stars for PEP-V observations

The link below contains the list of the current stars in the AAVSO PEP-V program.  Observations of any of these stars made using the AAVSO standard PEP method and these comparison and check stars may be submitted to AAVSO headquarters for automated data processing.

Click here to obtain a comma-separated (.csv) list of PEP-V target, comparison, and check stars.

This file is the current revision as of 2015 January 05.

AAVSO Photometric All-Sky Survey: Data Release 1

AAVSO Photometric All-Sky Survey (APASS)

Data Release 1

September 10, 2010

Arne Henden (AAVSO), Matthew Templeton (AAVSO), Dirk Terrell (SwRI), Tom C. Smith (DRO), Stephen Levine (Lowell), Doug Welch (McMaster)

Bibliography: visual magnitude estimates and photometry

A number of papers have been written discussing visual magnitude estimates in comparison to photometry.  Multiple studies have shown that visual magnitude estimates compare very favorably with instrumental photometry in terms of sensitivity and consistency.  As with all data, care must be taken to understand what visual magnitude estimates represent, what their bandpass is, and when their use is appropriate.

SSP-4 Targets and Comparison Stars

SSP-4 Targets and Comparison Stars

Table 1 - SSP-4 Target List

Star

SAO

Spectral Class

Var Type

Period (d)

Comparison Star, Check Star

Olin Eggen Observation Cards

Digitizing Olin Eggen's Legacy

Quick link: want to get involved? Visit the Eggen Data Project

QX Pup

Update (July 7, 2015):  I-band coverage of QX Pup by AAVSO observers since 2010 clearly shows that the period given in the 4th Edition of the GCVS of 648: days is incorrect. A phase plot by Sebastián Otero of these data shows that the period of QX Pup in Ic is 551 days.

 

The Field of QX Pup

This is a multiple set of projects, so pick and choose what aspects of them interest you.

Pages

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