All refereed publications based on data obtained from the HLA are requested to carry the following footnote:
Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA).
In addition, publications of research supported by an STScI grant must carry the following acknowledgment:
Support for Program number ____________ was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555.
partilhar – copiar, distribuir e transmitir a obra
recombinar – criar obras derivadas
De acordo com as seguintes condições:
atribuição – Tem de fazer a devida atribuição da autoria, fornecer uma hiperligação para a licença e indicar se foram feitas alterações. Pode fazê-lo de qualquer forma razoável, mas não de forma a sugerir que o licenciador o apoia ou subscreve o seu uso da obra.
partilha nos termos da mesma licença – Se remisturar, transformar ou ampliar o conteúdo, tem de distribuir as suas contribuições com a mesma licença ou uma licença compatível com a original.
{{Information |Description={{en|1=Color rendering is done by by Aladin-software (2000A&AS..143...33B.)}} |Source=datafile from http://hla.stsci.edu/hlaview.html |Author=Own work |Date= |Permission=Data Use Policy Although there is no cost involved in retr
Este ficheiro contém informação adicional, provavelmente adicionada a partir da câmara digital ou scanner utilizada para criar ou digitalizar a imagem. Caso o ficheiro tenha sido modificado a partir do seu estado original, alguns detalhes poderão não refletir completamente as mudanças efetuadas.
Comentário de ficheiro JPEG
SIMPLE = T / Generated by Aladin (CDS)
BITPIX = -32 / Bits per pixel
NAXIS = 2 / Number of axes
NAXIS1 = 6050 / Axis length
NAXIS2 = 6050 / Axis length
PCOUNT = 0 / No 'random' parameters
GCOUNT = 1 / Only one group
ORIGIN = 'NOAO-IRAF FITS Image Kernel July 2003' / FITS file originator
EXTNAME = 'SCI ' / Extension name
EXTVER = 1 / Extension version
IRAF-TLM= '10:09:15 (26/01/2008)' / Time of last modification
DATE = '2008-01-26T14:16:13' / Date FITS file was generated
INHERIT = T / inherit the primary header
EXPNAME = 'j8fs12isq ' / exposure identifier
BUNIT = 'ELECTRONS/SEC' / brightness units
/ WFC CCD CHIP IDENTIFICATION
CCDCHIP = '-999 ' / CCD chip (1 or 2)
/ World Coordinate System and Related Parameters
WCSAXES = 2 / number of World Coordinate System axes
CRPIX1 = 3025.0 / x-coordinate of reference pixel
CRPIX2 = 3025.0 / y-coordinate of reference pixel
CRVAL1 = 193.238714173 / first axis value at reference pixel
CRVAL2 = 11.2353373936 / second axis value at reference pixel
CTYPE1 = 'RA---TAN' / the coordinate type for the first axis
CTYPE2 = 'DEC--TAN' / the coordinate type for the second axis
CD1_1 = -1.388888888888889E-05 / partial of first axis coordinate w.r.t. x
CD1_2 = 0.0 / partial of first axis coordinate w.r.t. y
CD2_1 = 0.0 / partial of second axis coordinate w.r.t. x
CD2_2 = 1.388888888888889E-05 / partial of second axis coordinate w.r.t. y
LTV1 = 0.0000000E+00 / offset in X to subsection start
LTV2 = 0.0000000E+00 / offset in Y to subsection start
LTM1_1 = 1.0 / reciprocal of sampling rate in X
LTM2_2 = 1.0 / reciprocal of sampling rate in Y
ORIENTAT= 0.0 / position angle of image y axis (deg. e of n)
RA_APER = 1.932353551041E+02 / RA of aperture reference position
DEC_APER= 1.123333403266E+01 / Declination of aperture reference position
PA_APER = -134.456 / Position Angle of reference aperture center (de
VAFACTOR= 1.000012373714E+00 / velocity aberration plate scale factor
/ READOUT DEFINITION PARAMETERS
CENTERA1= 2073 / subarray axis1 center pt in unbinned dect. pix
CENTERA2= 1035 / subarray axis2 center pt in unbinned dect. pix
SIZAXIS1= 4096 / subarray axis1 size in unbinned detector pixels
SIZAXIS2= 2048 / subarray axis2 size in unbinned detector pixels
BINAXIS1= 1 / axis1 data bin size in unbinned detector pixels
BINAXIS2= 1 / axis2 data bin size in unbinned detector pixels
/ PHOTOMETRY KEYWORDS
PHOTMODE= 'ACS WFC1 F850LP MJD#52719.7875' / observation con
PHOTFLAM= 1.5074545E-19 / inverse sensitivity, ergs/cm2/Ang/electron
PHOTZPT = -2.1100000E+01 / ST magnitude zero point
PHOTPLAM= 9.0547715E+03 / Pivot wavelength (Angstroms)
PHOTBW = 5.3943610E+02 / RMS bandwidth of filter plus detector
/ REPEATED EXPOSURES INFO
NCOMBINE= 3 / number of image sets combined during CR rejecti
/ DATA PACKET INFORMATION
FILLCNT = 0 / number of segments containing fill
ERRCNT = 0 / number of segments containing errors
PODPSFF = F / podps fill present (T/F)
STDCFFF = F / ST DDF fill present (T/F)
STDCFFP = 'x5569 ' / ST DDF fill pattern (hex)
/ ON-BOARD COMPRESSION INFORMATION
WFCMPRSD= F / was WFC data compressed? (T/F)
CBLKSIZ = 0 / size of compression block in 2-byte words
LOSTPIX = 0 / #pixels lost due to buffer overflow
COMPTYP = 'None ' / compression type performed (Partial/Full/None)
/ IMAGE STATISTICS AND DATA QUALITY FLAGS
NGOODPIX= 8298663 / number of good pixels
SDQFLAGS= 31743 / serious data quality flags
GOODMIN = -1.1239847E+02 / minimum value of good pixels
GOODMAX = 5.3719922E+04 / maximum value of good pixels
GOODMEAN= 4.6526512E+01 / mean value of good pixels
SOFTERRS= 0 / number of soft error pixels (DQF=1)
SNRMIN = -2.7871618E+00 / minimum signal to noise of good pixels
SNRMAX = 1.9360277E+02 / maximum signal to noise of good pixels
SNRMEAN = 4.4277935E+00 / mean value of signal to noise of good pixels
MEANDARK= 1.7913055E+00 / average of the dark values subtracted
MEANBLEV= 2.4548601E+03 / average of all bias levels subtracted
MEANFLSH= 0.000000 / Mean number of counts in post flash exposure
OCRVAL1 = 193.2482662095 / first axis value at reference pixel
OCRVAL2 = 11.24565203745 / second axis value at reference pixel
OCRPIX2 = 1024.0 / y-coordinate of reference pixel
OCRPIX1 = 2048.0 / x-coordinate of reference pixel
ONAXIS2 = 2048 / Axis length
ONAXIS1 = 4096 / Axis length
OCD2_2 = -9.74698E-06 / partial of second axis coordinate w.r.t. y
OCD2_1 = -1.0565E-05 / partial of second axis coordinate w.r.t. x
OORIENTA= -134.2201197045514 / position angle of image y axis (deg. e of n)
OCTYPE1 = 'RA---TAN' / the coordinate type for the first axis
OCD1_1 = 8.95176E-06 / partial of first axis coordinate w.r.t. x
OCD1_2 = -1.0016E-05 / partial of first axis coordinate w.r.t. y
OCTYPE2 = 'DEC--TAN' / the coordinate type for the second axis
WCSCDATE= '09:18:46 (26/01/2008)' / Time WCS keywords were copied.
A_0_2 = 2.177504944715005E-06
B_0_2 = -7.214506639901383E-06
A_1_1 = -5.180127734884312E-06
B_1_1 = 6.189801752759288E-06
A_2_0 = 8.544565043239267E-06
B_2_0 = -1.736454319355329E-06
A_0_3 = 1.332013040823568E-11
B_0_3 = -3.976731771771149E-10
A_1_2 = -5.233139025306278E-10
B_1_2 = -6.043441096944189E-11
A_2_1 = -3.978938801711062E-11
B_2_1 = -5.137699417968277E-10
A_3_0 = -4.78378808551178E-10
B_3_0 = 8.61684155348491E-11
A_0_4 = 5.449132453649158E-15
B_0_4 = 5.323813273135677E-15
A_1_3 = -3.098209531931294E-14
B_1_3 = -5.983990260966384E-16
A_2_2 = 3.211621644764788E-14
B_2_2 = -3.702661816849072E-14
A_3_1 = 1.401118744304762E-15
B_3_1 = -2.541337878488985E-15
A_4_0 = 2.569633817425528E-14
B_4_0 = -1.91783575693663E-14
A_ORDER = 4
B_ORDER = 4
HISTORY The following throughput tables were used: crotacomp$hst_ota_007_syn.fit
HISTORY s, cracscomp$acs_wfc_im123_004_syn.fits, cracscomp$acs_f850lp_004_syn.fi
HISTORY ts, cracscomp$acs_wfc_ebe_win12f_005_syn.fits, cracscomp$acs_wfc_ccd1_01
HISTORY 7_syn.fits
O_CRVAL1= 193.2389914
O_CRVAL2= 11.23547255
G_CRVAL1= 193.238902318
G_CRVAL2= 11.2352763881
G_DRA = -0.320696
G_DDEC = -0.706183
G_RMSRA = 0.329986
G_RMSDEC= 0.225901
G_NMATCH= 17
S_CRVAL1= 193.238714173
S_CRVAL2= 11.2353373936
S_DRA = -0.998017
S_DDEC = -0.486563
S_RMSRA = 0.05222
S_RMSDEC= 0.052402
S_NMATCH= 33
T_CRVAL1= 193.23878049
T_CRVAL2= 11.2354964606
T_DRA = -0.759275
T_DDEC = 0.086078
T_RMSRA = 0.329487
T_RMSDEC= 0.760047