1993JAVSO..22....2H

Query : 1993JAVSO..22....2H

1993JAVSO..22....2H - J. Am. Assoc. Variable star obs., 22, 2-11 (1993/June-0)

Calibration of Hipparcos long period variable star fields using multi-color CCD observations.

HOWELL S.B., MATTEI J.A. and BENSON P.J.

Abstract (from CDS):

The first set of 4-color AAVSO CCD finder charts has been prepared using the 0.9-m telescope at Kitt peak national Observatory in Arizona. The stars selected were northern long period variable stars observed with the Hipparcos astrometric satellite, since multicolor photometry was needed on these stars to calibrate and reduce the photometric and astrometric data obtained by the satellite. We describe the criteria in choosing the stars for which to prepare CCD finder charts, the observation process, and the reduction of the CCD to obtain 4-color CCD magnitude sequences to use in the creation of AAVSO finder charts.

Abstract Copyright: ∼

Journal keyword(s):

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* S Per s*r 02 22 51.7113133056 +58 35 11.422774248 13.22 10.55 7.90     M4.5-7Iae 388 0
2 V* U Ori Mi* 05 55 49.1707632432 +20 10 30.677904084 6.82 6.39 5.40 6.24   M6-9.5e 500 0
3 V* VX Gem C* 07 12 48.9705620544 +14 36 03.716151984     10.80     C9,1e 92 0
4 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
5 BC 56 C* 10 17 50.8027412952 +73 25 13.349385156   16.06 11.31 10.46   C-N 16 0
6 V* W Leo Mi* 10 53 37.4353629739 +13 42 54.340981817   12.03 10.58 11.89   M5.5e 93 0
7 V* VX UMa Mi* 10 55 40.8818165616 +71 52 09.632310132       11.56   M8e 55 0
8 V* RU Vir C* 12 47 18.4090087128 +04 08 41.356415148   14.75 9.00     C8,1e 185 0
9 V* RR Boo Mi* 14 47 05.7846522432 +39 19 01.557781824   12.09 11.01 9.06   M2-6e 66 0

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