DOI: https://doi.org/10.18524/1810-4215.2019.32.181741

USING CONSUMER-GRADE DSLR CAMERA AND SMALL TELESCOPE TO FIND NEW VARIABLE STARS

M. Yu. Pyatnytskyy

Анотація


Twenty-seven new variable stars were
found in DSLR images captured from October 2017
to June 2019. All images were taken using unmod-
i?ed Canon EOS 600D DSLR attached to a Sky-
watcher 150/750 Newtonian on a motorized equato-
rial mount. The variables were registered in The In-
ternational Variable Star Index (VSX, AAVSO) as
PMAKV1..PMAKV27 respectively. Most of them
(twelve) were classi?ed as semiregular variables of dif-
ferent subtypes, nine as eclipsing binaries (EA, EW,
and EB), three rotating RS Canum Venaticorum-type
stars, one rotating ellipsoidal variable (ELL), one Delta
Scuti-type pulsating variable, and one as a possible
nova-like (NL) star.
The setup and methodology used by the author al-
lowed discovering of variables having a wide range of
maximum brightness (from 8: m 9 to 14: m 4 in V band for
stars described in the current work), variability range
up to ?0: m 1 and less, and quite di?erent periods of vari-
ability, from hours to hundreds of days. Although all
those variables were detected using images taken by the
author, detailed analysis and classi?cation of stars re-
quired the involvement of additional data sources (au-
tomated sky surveys


Ключові слова


variable stars;aperture photometry; DSLR

Повний текст:

PDF (English)

Посилання


AAVSO: 2019, https://www.aavso.org

Andronov I.L., et al.: 2017, ASP Conf.Ser., 511, 43.

Blackford M., et al: 2016, https://www.aavso.org/dslr-observing-manual

Buil C.: 2010, http://www.astrosurf.com/buil/iris-software.html

Butters O.W., et al.: 2010, A&A, 520, L10.

Collins K.A., et al.: 2017, AJ, 153, 77.

Henden A.A., et al.: 2018, AAS Meeting #232, id. 223.06, 2018AAS...23222306H

Henden A.A., Kaitchuck R.H.: 1982, Astronomical Photometry, Van Nostrand Reinhold Co., New York, 12+392 p.

Hoot J.E.: 2007, 26th Annual Symposium on Telescope Science,

Published by the Society for Astronomical Sciences., p.67, 2007SASS...26...67H

Hroch F.: 2014, ASCL, ascl:1402.006, http://c-munipack.sourceforge.net

Kloppenborg B.K., et al.: 2012, JAAVSO, 40, 815.

Kochanek C.S., et al.: 2017, PASP, 129, 104502.

Masci F.J., et al.: 2019, PASP, 131, 018003.

Pieri R.: 2012, JAAVSO, 40, 834.

Pieri R.: 2019, Private communication

Pyatnytskyy M.Yu.: 2018, http://fits-command-line-utilities.sourceforge.net

Sesar B., et al.: 2017, AJ, 153, 204.

VizieR Catalogue Service, https://vizier.u-strasbg.fr VStar, https://www.aavso.org/vstar

Watson C.L., Henden A.A., Price A.: 2006, 25th Annual Symposium on Telescope Science, Published by the Society for Astronomical Sciences.,

p.47, 2006SASS...25...47W

Wozniak P.R., et al.: 2004, AJ, 127, 2436.

Zhang M., et al.: 2015, PASP, 128, 961.




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