2002A&A...381.1110S


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.26CET01:29:43

2002A&A...381.1110S - Astronomy and Astrophysics, volume 381, 1110-1130 (2002/1-3)

ISOPHOT - Photometric calibration of point sources.

SCHULZ B., HUTH S., LAUREIJS R.J., ACOSTA-PULIDO J.A., BRAUN M., CASTANEDA H.O., COHEN M., CORNWALL L., GABRIEL C., HAMMERSLEY P., HEINRICHSEN I., KLAAS U., LEMKE D., MUELLER T., OSIP D., ROMAN-FERNANDEZ P. and TELESCO C.

Abstract (from CDS):

All observations by the aperture photometer (PHT-P) and the far-infrared (FIR) camera section (PHT-C) of ISOPHOT included reference measurements against stable internal fine calibration sources (FCS) to correct for temporal drifts in detector responsivities. The FCSs were absolutely calibrated in-orbit against stars, asteroids and planets, covering wavelengths from 3.2 to 240µm. We present the calibration concept for point sources within a flux-range from 60mJy up to 4500 Jy for staring and raster observations in standard configurations and discuss the requisite measurements and the uncertainties involved. In this process we correct for instrumental effects like nonlinearities, signal transients, time variable dark current, misalignments and diffraction effects. A set of formulae is developed that describes the calibration from signal level to flux densities. The scatter of 10 to 20% of the individual data points around the derived calibration relations is a measure of the consistency and typical accuracy of the calibration. The reproducibility over longer periods of time is better than 10%. The calibration tables and algorithms have been implemented in the final versions of the software for offline processing and interactive analysis.

Abstract Copyright:

Journal keyword(s): instrumentation: photometers - methods: data analysis - techniques: photometric - infrared: stars - infrared: solar system

Simbad objects: 25

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Number of rows : 25

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * bet And PM* 01 09 43.92388 +35 37 14.0075 5.58 3.62 2.05 0.81 -0.19 M0+IIIa 537 0
2 * alf Ari PM* 02 07 10.40570 +23 27 44.7032 4.29 3.17 2.01 1.15 0.54 K2-IIIbCa-1 608 1
3 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1191 1
4 * eps Lep PM* 05 05 27.6653698 -22 22 15.723893 6.41 4.64 3.18 2.08 1.27 K4III 143 0
5 * alf Hya * 09 27 35.24270 -08 39 30.9583 5.14 3.42 1.97 0.93 0.16 K3IIIa 409 0
6 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2159 0
7 HD 141653 PM* 15 46 40.0049898018 +62 35 58.416313768   5.240 5.194     A2IV 51 0
8 * tet Dra SB* 16 01 53.3463580 +58 33 54.905636 4.630 4.520 4.000 3.56 3.31 F9V 279 0
9 HD 158485 * 17 26 04.8370194390 +58 39 06.831346171   6.616 6.494     A4V 50 0
10 * ksi Dra PM* 17 53 31.7296234 +56 52 21.514262 6.14 4.93 3.75 2.92 2.33 K2III 257 0
11 * gam Dra * 17 56 36.36988 +51 29 20.0242 5.630 3.760 2.230 1.08 0.23 K5III 520 0
12 NGC 6543 PN 17 58 33.4042519454 +66 37 58.748961810   11.09 11.28     [WC] 1127 1
13 HD 168009 PM* 18 15 32.4634579930 +45 12 33.540002210   6.931 6.298     G1V 187 0
14 HD 172323 SB* 18 35 09.3562669174 +63 41 47.341505526       7.8   F9V 48 0
15 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2533 0
16 * del Dra PM* 19 12 33.3019645 +67 39 41.545581 4.85 4.07 3.07 2.37 1.86 G9III 263 0
17 HD 181597 * 19 18 37.8722185239 +49 34 10.035499564   7.442 6.317     K1III 52 0
18 HD 184400 Er* 19 31 56.0173623777 +48 35 34.152068903       8.2   F6 42 0
19 HD 184960 PM* 19 34 19.7897154364 +51 14 11.827779462   6.21   5.4   F7V 140 0
20 * tet Cyg PM* 19 36 26.5343563 +50 13 15.964573 4.83 4.86 4.48 4.13 3.92 F3+V 329 1
21 HD 189276 * 19 55 55.3792000435 +58 50 45.475151496 8.47 6.51 4.96 3.56 2.92 K4.5IIIa 73 0
22 HD 192781 PM* 20 13 27.6168034237 +60 38 26.046627873   7.281 5.780     K5III 31 0
23 * ome Cap V* 20 51 49.2909479855 -26 55 08.891176687 7.66 5.75 4.12 2.87 1.93 M0IIIBa0.5 95 0
24 * mu. Peg PM* 22 50 00.1931506 +24 36 05.698380 5.10 4.42 3.48 2.80 2.33 G8+III 278 0
25 * bet Peg LP* 23 03 46.45746 +28 04 58.0336 6.05 4.09 2.42 0.92 -0.40 M2.5II-III 580 0

    Equat.    Gal    SGal    Ecl

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2021.01.26-01:29:43

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