List of new variable stars

discovered by Ondrej Pejcha on CCD images taken at the Nicholas Copernicus Observatory and Planetarium in Brno.


Images were taken using 0.4 m (f = 1750 mm) Newtonian telescope with SBIG ST-7 CCD camera (765x510 pixels) read out in 2x2 binning with resulting scale of 2.17 arcsec per pixel. The filter wheel is equipped with BV(RI)C filters and a clear hole. The vast majority of analyzed images were taken through V(RI)C filters by O. Pejcha and P. Sobotka (unless otherwise noted). The observing programme is primarily focused on long-term photometry of symbiotic binaries. Typical observation of a particular star on one night is a series of 3 VRI shots (9 images total) with exposure times being generally 40, 15, 10 seconds for V, R, I filters, respectively.


The images were dark-framed and flat-fielded in a standard manner, the photometry and matching was done by muniphot and munimat, parts of MUNIPACK. Raw images are fed to an automatic pipeline written in Perl. New variable stars were discovered by the means of a simple method described e.g. in Pojmanski (2000, astro-ph/0005236) and implemented to VARFIND. Observations of these stars were in most cases posted to vsnet-newvar.

Substantial catalogue research was done by John Greaves, UK, to whom I am very thankful!

Star name RA Dec Variability type Max mag Min mag Passband Nearby star
Pej 001 18:14:23.2 +20:54:29 SR ~16.5 V YY Her Details >>
Pej 002 19:03:33.4 +16:31:19 SR 12.4 13.2 V V1413 Aql Details >>
Pej 003 19:01:39.3 +02:06:44 SR ~11.1 I Sh 2-71 Details >>
Pej 004 19:11:00.7 +02:52:42 short-period: 11.8 12.0 V Ap 3-1 Details >>
Pej 005 19:10:57.7 +02:52:09 SR 13.0 13.7 R Ap 3-1 Details >>
Pej 006 19:04:01.2 -03:05:12 SR 12.0 12.6 R CM Aql Details >>
Pej 007 19:03:27.8 -03:01:43 M: 12.6 13.6 I CM Aql Details >>
Pej 008 18:48:31.1 -06:42:49 SR 13.6 14.0 V AS 323 Details >>
Pej 009 18:48:22.5 -06:43:13 SR 12.4 13.1 R AS 323 Details >>
Pej 010 18:48:16.4 -06:40:04 SR 12.4 13.0 R AS 323 Details >>
Pej 011 18:54:04.2 -04:38:32 SR Pe 2-16 Details >>
Pej 012 18:44:25.5 +05:00:13 M 11.8 13.7 I DQ Ser Details >>
Pej 013 19:23:25.9 +24:31:10 short-period: 10.25 10.50 V V335 Vul Details >>
Pej 014 18:15:31.5 -00:22:34 M: 12.4 13.5 R FG Ser Details >>
Pej 015 18:14:58.6 -00:23:00 SR: 13.5 14.4 R FG Ser Details >>
Pej 016 20:35:44.4 +20:06:57 M: 11.0 13.4 R LT Del Details >>
Pej 017 19:45:31.3 +18:37:12 SR: 12.3 12.8 I QW Sge Details >>
Pej 018 19:23:57.6 +29:37:13 short-period: 13.3 13.9 V BF Cyg Details >>
Pej 019 19:24:10.5 +29:42:48 SR 14.7 15.7 V BF Cyg Details >>
Pej 020 19:57:14.9 +39:49:55 SR: V1016 Cyg Details >>
Pej 021 18:44:58.0 +13:40:32 SR: V672 Her Details >>
Pej 022 19:39:22.8 +26:31:54 SR: ~16 R Hen 2-442 Details >>
Pej 023 00:26:48.7 +41:50:04 W UMa 14.4 15.0 V MisV1095 Details >>
Pej 024 19:02:07.1 +02:07:27 short-period ~14.8 R Sh 2-71 Details >>
Pej 025 19:04:29.2 +36:39:49 W UMa ~15.2 C TrES-1 Details >>
Pej 026 17:52:39.0 +43:49:29 EW: 11.2 R V338 Her Details >>


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