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ARCSAT ID NUMBER: AS02

DESCRIPTIVE TITLE: CV stars investigations

PI: Viktor Malanushenko

OBSERVER(S): Viktor Malanushenko

UNCERTIFIED/UNTRAINED OBSERVERS: 

COLLABORATORS: (dr. E. Pavlenko, Crimean Astrophysical Observatory, Ukraine)

CONTACT INFORMATION: (Viktor Malanushenko, viktorm @ apo.nmsu.edu

TIME REQUESTED: 

May 14-17, May 20-24, June 5-7, June 10-11


INSTRUMENT: SurveyCam

FILTERS: gr, R (Johnson)

COMMENTS: May 14-17 , May 27-28, June 10-11 on site

BRIEF SCIENCE JUSTIFICATION: \'a0(restrict yourself to 1-2 paragraphs)

Search for the appearance/disappearance of the negative superhumps \'a0among the cataclysmic variables that change their outburst activity.

- Continue observations of SDSS J080434.20+510349.2: A Cataclysmic Variable Witness of Instability Strip

- Investigation of the superhumps evolution of the SU UMa stars during the course of the superhumps.

Basing on new observations and the already \'a0gathered \'a0photometry of MN Dra \'a0(ARCSAT, APO + CrAO, Ukraine) we expect to obtain new results of the poorly known dependence of the negative superhump \'a0period on the phase of normal outburst cycle in this system. \'a0\'a0That will help to study and understand this \'a0phenomenon among the cataclysmic variables in general. 

We also expect \'a0to use our data to get the details of the orbital variability of the V503 Cyg in minimum.