ADS BibCode:
2000Msngr.100....1G
Author(s)/Affiliation(s):
Gilmozzi, R.; Dierickx, P.
AA(ESO) AB(ESO)
Abstract:
ESO is developing a concept of ground-based, 100-m-class optical telescope (which the authors have christened OWL for its keen night vision and for OverWhelmingly Large), with segmented primary and secondary mirrors, integrated achive optics and multi-conjugate adaptive optics capabilities.
References:
1M. Mountain, What is beyond the current
generation of ground-based 8-m to 10-m
class telescopes and the VLT-I ?, SPIE
2871, pp. 597–606, 1996.
2B. Meinel, An overview of the Technological
Possibilities of Future Telescopes, 1978,
ESO Conf. Proc. 23, 13.
3L. D. Barr, Factors Influencing Selection of
a Next Generation Telescope Concept,
1979, Proc. SPIE Vol. 172, 8.
4A. Ardeberg, T. Andersen, B. Lindberg, M.
Owner-Petersen, T. Korhonen, P. Søndergård,
Breaking the 8-m Barrier – One
Approach for a 25m Class Optical Telescope,
ESO Conf. and Workshop Proc.
No. 42, pp. 75–78, 1992.
5T. Andersen, A. Ardeberg, J. Beckers, R.
Flicker, A. Gontcharov, N. C. Jessen, E.
Mannery, M. Owner-Pertersen, H. Riewaldt,
The proposed 50 m Swedish Extremely
Large Telescope, 2000, Bäckaskog
Workshop on Extremely Large
Telescopes, ESO Conf. and Workshop
Proc. No. 57, p. 72.
6T. Sebring, F. Bash, F. Ray, L. Ramsey, The
Extremely Large Telescope: Further
Adventures in Feasibility, SPIE Proc.
3352, p. 792, 1998.
7T. Sebring, G. Moretto, F. Bash, F. Ray, L.
Ramsey, The Extremely Large Telescope
(ELT), A Scientific Opportunity; An Engineering
Certainty; 2000, Bäckaskog
Workshop on Extremely Large Te l escopes,
ESO Conf. and Workshop Proc.
No. 57, p. 53.
8J. E. Nelson, Design concepts for the
California extremely large telescope
(CELT); 2000, SPIE 4004.
9R. Gilmozzi, B. Delabre, P. Dierickx, N.
Hubin , F. Koch, G. Monnet, M. Quattri, F.
Rigaut, R.N. Wilson, The Future of Filled
Aperture Telescopes: is a 100m Feasible?;
1998, Advanced Technology Optical/
IR Telescopes VI, SPIE 3352, 778.
10P. Dierickx, R. Gilmozzi, OWL Concept
Overview; 2000, Bäckaskog Workshop on
Extremely Large Telescopes, ESO Conf.
and Workshop Proc. No. 57, p. 43.
11P. Dierickx, J. Beletic, B. Delabre, M.
Ferrari, R. Gilmozzi, N. Hubin, The Optics
of the OWL 100-M Adaptive Telescope;
2000, Bäckaskog Workshop on Extremely
Large Telescopes, ESO Conf. and
Workshop Proc. No. 57, p. 97.
12E. Brunetto, F. Koch, M. Quattri, OWL: first
steps towards designing the mechanical
structure; 2000, Bäckaskog Workshop on
Extremely Large Telescopes, ESO Conf.
and Workshop Proc. No. 57, p. 109.
13N. Hubin, M. Le Louarn, New Challenges
for Adaptive Optics: The OWL Project;
2000, Bäckaskog Workshop on Extremely
Large Telescopes, ESO Conf. and
Workshop Proc. No. 57, p. 202.
14H. U. Käufl, G. Monnet, From ISAAC to
GOLIATH, or better not!? Infrared instrumentation
concepts for 100m class telescopes;
2000, Bäckaskog Workshop on
Extremely Large Telescopes, ESO Conf.
and Workshop Proc. No. 57, p. 282.
15H. F. Morian, Segmented mirrors from
S C H O T T GLAS for the ELTs; 2000,
Bäckaskog Workshop on Extremely Large
Telescopes, ESO Conf. and Workshop
Proc. No. 57, p. 249.
16R. Geyl, M. Cayrel, Extremely large telescopes
– a manufacturer point of view;
2000, Bäckaskog Workshop on Extremely
Large Telescopes, ESO Conf. and
Workshop Proc. No. 57, p. 237.
17P. Dierickx, B. Delabre, L. Noethe, OWL
Optical Design, Active Optics and Error
Budget, 2000, SPIE 4003.
18R. Geyl, M. Cayrel, REOSC approach to
ELTs and segmented optics; 2000, SPIE
4003.
19G. Chanan, Phasing the primary mirror
segments of the Keck telescopes: a comparison
of different techniques, 2000,
SPIE 4003.
2 0S. Cuevas Cardona, V. G. Orlov, F.
Garfias, V. V. Voitsekovich, L. Sanchez,
Curvature equation for segmented telescopes,
2000, SPIE 4003.
21N. Hubin, M. le Louarn, M. Sarazin, A.
Tokovinin, New challenges for adaptive
optics: the OWL 100 m telescope, 2000,
SPIE 4007.
22F. Rigaut, R. Ragazzoni, M. Chun, M.
Mountain, Adaptive Optics Challenges for
the ELT ; 2000, Bäckaskog Workshop on
Extremely Large Telescopes, ESO Conf.
and Workshop Proc. No. 57, p. 168.
23R. Ragazzoni, J. Farinato, E. Marchetti,
Adaptive optics for 100 m class telescopes:
new challenges require new solutions,
2000, SPIE 4007.
24R. Ragazzoni, Adaptive optics for giant telescopes:
NGS vs. LGS, ; 2000,
Bäckaskog Workshop on Extremely Large
Telescopes, ESO Conf. and Workshop
Proc. No. 57, p. 175.
25M. Quattri, F. Koch, Analyzing the requirements
of the enclosure and infrastructures
for OWL and elaborating on possible solutions;
2000, SPIE 4004.
26E. Brunetto, F. Koch, M. Quattri, OWL: further
steps in designing the telescope and
in assessing its performances; 2000,
SPIE 4004.

ADS BibCode:
2000Msngr.100...11.
Author(s)/Affiliation(s):
ESO
AA(ESO)

ADS BibCode:
2000Msngr.100...12C
Section:
Telescopes and Instrumentation
Author(s)/Affiliation(s):
Currie, D.; Bonaccini, D.; Diolaiti, E.; Tordo, S.; Naesgarde, K.; Liwing, J.; Bendinelli, O.; Parmeggiani, G.; Close, L.
AA(European Southern Observatory, Garching bei München, Germany) AB(European Southern Observatory, Garching bei München, Germany) AC(Università di Bologna – Dipartimento di Astronomia, Bologna, Italy) AD(European Southern Observatory, Garching bei München, Germany) AE(European Southern Observatory, Garching bei München, Germany) AF(European Southern Observatory, Garching bei München, Germany) AG(Università di Bologna – Dipartimento di Astronomia, Bologna, Italy) AH(Osservatorio Astronomico di Bologna, Italy) AI(European Southern Observatory, Garching bei München, Germany)
Abstract:
The European Southern Observatory is currently developing an array of software analysis packages to perform Photometry and Astrometry on both stellar and diffuse objects observed with Adaptive Optics Systems.
References:
1Currie, D.E., Diolaiti, D., Bonaccini, S., Tordo,
K., Naesgarde, J., Liwing, O., Bendinelli,
G., Parmeggiani, L. The ESO Photometric
and Astrometric Analysis Program for
AO: A Programmatic and Numerical
Analysis Proc. of SPIE Vol. 4007 Adaptive
Optical Systems Technology Editor: P.
Wizinowich, #4007–72 1–12 (in press)
(2000).
2Currie, D.G., E. Diolaiti; S. Tordo; K. Naesgarde,
J. Liwing, O. Bendinelli; G. Parmeggiani,
L. Close, D. Bonaccini. (1999)
ESO Photometric and Astrometric Analysis
Program for Adaptive Optics ADASSIX
1999.
3Diolaiti, D., Bendinelli O., Bonaccini D.,
Parmeggiani G., & Rigaut F. STARFINDER:
an IDL GUI based code to Analyze
Crowded Fields with Isoplanatic Correcting
PSF Fitting (1998) in ESO/OSA -
Topical Meeting on Astronomy with
Adaptive Optics., ed. D. Bonaccini
(Garching b. Meunchen, ESO), p.175).
4Diolaiti, E. et. al. Proc. of SPIE Vol. 4007
Adaptive Optical Systems Te c h n o l o g y
Editor: P. Wizinowich, #4007–74 1–12 (in
press) (2000).
5Diolaiti, E., D. Currie, O. Bendinelli, G. Parmeggiani,
L. Close, D. Bonaccini (1999)
Astronomical Data Analysis Software and
Systems – IX 1999.
6Bonaccini, D., Prieto, E., Corporon, P. ,
Christou, J., Le Mignan, D., Prado, P.,
Gredel, R., and Hubin, N., (1997) “Performance
of the ESO AO system ADONIS,
at La Silla 3.6m telescope, SPIE
Proceedings Vol 3126, “Adaptive Optics
and Applications”, Tyson and Fugate Eds.
7http://www.ls.eso.org/lasilla/Telescopes/
360cat/adonis/
8http://www.eso.org/projects/aot/aowg
9Christou, J.C., Bonaccini, D. et. al (1999)
“Myopic Deconvolution of Adaptive Optics
Images” The Messenger, No. 97, p.
14–22, http://www.eso.org/gen-fac/pubs/
messenger/
1 0Christou, J.C., Ellerbroek, B., Fugate, B.Q.,
Bonaccini, D. and Stanga, R. (1995), Rayleigh
Beacon Adaptive Optics Imaging of
ADS 9781: Measurements of the Isoplanatic
Field of View, ApJ, 450, 869–879.
11Close, L. M. (2000) SPIE 4007 “A Review
of Published Galactic and Solar System
Science: A Bright Future for A d a p t i v e
Optics Science”.
12http://www.eso.org/instruments/naos/
index.html
13Currie, D.G. and D.M. Dowling. (1999)
“Astrometric Motion and Doppler Velocity”
Eta Carinae at the Millennium,
ASP Conference Series, Vol. 179 J.A.
Morse, R.M. Humphries, and A. Damineli,
eds.
1 4Dowling, D.M. (1996) “The A s t r o m e t r i c
Expansion and 3-D Structure of eta Carinae”
University of Maryland, Ph. D.
Thesis.
15Currie, D.G., Dowling, D.M., Shaya, E.J.,
Hester, J., Scowen, P., Groth, E.J.; Lynds,
R., O’Neil, E.J., Jr.; Wide Field/Planetary
Camera Instrument Definition Team “Astrometric
Analysis of the Homunculus of
eta Carinae With the Hubble Space
Telescope” 1996, AJ, 112, 1115.
16Naesgarde, K. (1999) “Accuracy in Differential
Photometry – STARFINDER vs.
DAOPHOT” Master’s Thesis TRITA-FYS
#XXX, Stockholm.
1 7Liwing, (1999) “Accuracy of Diff e r e n t
Methods for Differential A s t r o m e t r y ”
Master’s Thesis TRITA-FYS #XXX, Stockholm.
18Landsman, W.B. (1995) “The IDL Astronomy
User’s Library” Astronomical Data
Analysis Software and Systems IV, ASP
Conference Series, Vol. 77, 1995, R.A.
Shaw, H.E. Payne, and J.J.E. Hayes,
eds., p. 437.
19Avizonis, P. V.(1997) Ph. D. Thesis University
of Maryland.
20Simon, M., Close, L.M., Beck, T.L. “Adaptive
Optics Imaging of the Orion Trapezium
Cluster” (1999) A J, 117 1 3 7 5 –
1386.
21Roddier, F., Northcott, M., Graves, J.E., “A
simple low-order adaptive optics system
for near-infrared applications” 1991 PASP
103 131–149.
22Currie, D.G., D.M. Dowling, E. Shaya, J.J.
Hester, HSTWFPC IDTand HSTWFPC2
IDT “3-D Structure of the Bipolar Dust
Shell of eta Carinae” (1996) “Role of Dust
in the Formation of Stars, Garching bei
Muenchen, Federal Republic of Germany,
11–14 September 1995, Proceedings of
the ESO Workshop, Käufl, H.U. and
Siebenmorgen, R. (Ed.) Springer-Verlag,
89–94.
23Currie, D., D. Le Mignant, B. Svensson,
E. Diolaiti, S. Tordo, K. Naesgarde, J.
Liwing, O. Bendinelli, G. Parmeggiani, D.
Bonaccini “Hyper-Velocity Jets and
Homuncular Motion in eta Carinae: an
Application of the Fabry-Perot, ADONIS
and AO Software” SPIE Vol. 4007 AO
Systems Technology Editor: P. Wizinowich,
# 4007–75, 1–12 (in press)
(2000a)+
24Christou, J. and Bonaccini, D. “An Analysis
of ADONIS Data, tau Canis majoris –
Deconvolution”.
http://www.ls.eso.org/lasilla/Telescopes/
360cat/adonis/html/datared.html#idac
25Hester, J.J.; Light, R.M., Westphal, J.A.,
Currie, D.G., Groth, E.J.; Holtzmann, J.A.,
L a u e r, T.R., O’Neil, E.J., Jr. “Hubble
Space Telescope imaging of Eta Carinae”
1991 AJ 102, 654–657.

ADS BibCode:
2000Msngr.100...23D
Section:
Telescopes and Instrumentation
Author(s)/Affiliation(s):
Diolaiti, E.; Bendinelli, O.; Bonaccini, D.; Close, L.; Currie, D.; Parmeggiani, G.
AA(Università di Bologna – Dipartimento di Astronomia) AB(Università di Bologna – Dipartimento di Astronomia) AC(ESO) AD(ESO) AE(ESO) AF(Osservatorio Astronomico di Bologna)
Abstract:
StarFinder is a code dessigned to analyse Adaptive Optics images of very crowded fields. A typical AO observation has a well-sampled and complex-shape PSF, showing a sharp peak, one or more fragmented diffraction rings and an extended irregular halo. The approach followed in StarFinder is to analyse the stellar field with a digital image of the PSF, without any analytic approximator.
References:
Aloisi A. et al., 2000. In preparation.
Diolaiti E. et al., 1999a, “An algorithm for
crowded stellar fields analysis”, in Astron -
omy with Adaptive Optics: present results
and future programs, Sonthofen, ESO
Conf. and Workshop Proc. No. 56, p.175.
Diolaiti et al., 1999b, “StarFinder: a code for
crowded stellar fields analysis” in ADASS
IX, Hawaii. In press (astro-ph/9911354).
Diolaiti E. et al., 2000, “StarFinder: an IDL G U I
based code to analyze crowded fields
with isoplanatic correcting PSF fitting”, in
Adaptive Optical System Te c h n o l o g y,
Munich. In press (astro-ph/0004101).
Véran J.-P. et al., 1997, J. Opt. Soc. Am. A,
14 (11), 3057.
Véran J.-P., Rigaut F., 1998, Proc. SPIE
3353, 426.

ADS BibCode:
2000Msngr.100...27B
Section:
Telescopes and Instrumentation
Author(s)/Affiliation(s):
Bonaccini, D.; Hackenberg, W.; Davies, R. I.; Rabien, S.; Ott, T.
AA(ESO, Garching) AB(ESO, Garching) AC(Max-Planck-Institut für Extraterrestrische Physik, Garching) AD(Max-Planck-Institut für Extraterrestrische Physik, Garching) AE(Max-Planck-Institut für Extraterrestrische Physik, Garching)
Abstract:
The planned baseline laser for the VLT Laser Guide Star Facility (LGSF) consists of dye laser modules, capable of producing > 6.5 W CW each (1). Two such modules can fit on a 1.5 ´ 1.5 m optical table. The laser concept was developed in a preliminary LGSF study phase (2) and is a variation of the ALFA laser (3) used in Calar Alto (Spain). It uses two Coherent Inc. all-solid state Compass Verdi 10 W lasers at 532 nm, to pump a modified Coherent model 899-21, continuous-wave (cw) ring-dye l a s e r. The dye is Rhodamine 6G (Rh6G).
References:
(1) Bonaccini, D., Hackenberg, W. and Avila,
G: “The Laser Guide Star Facility for the
VLT”, in Proceedings of the ESO June
23–26 1997 Workshop on ‘Laser
Technology for Laser Guide Star Adaptive
Optics’, p. 152–157, N. Hubin ed.
(2) Bonaccini, D., Hackenberg, W., Cullum,
M., Quattri, M, Brunetto, E., Quentin, J.,
Koch, F., Allaert, E. and Van Kesteren, A.:
“Laser Guide Star Facility for the ESO
VLT”, The Messenger No. 98, p.8-13, Dec
1999 – http://www.eso.org/gen-fac/pubs/
messenger/
(3) Davies, R.I., Eckart, A., Hackenberg, W.,
et al., 1998. In: Adaptive Optical System
Technologies, Bonaccini, D., Tyson, R.K.
(eds.), Proc. SPIE 3353,116.
(4) Hackenberg,W., Bonaccini,D. and
Avila,G: “VLT Laser Guide Star Facility
Subsystem Design Part I: Fibre Relay
Module”, The Messenger No. 98, p.14–
18, Dec 1999 – http://www.eso.org/genfac/
pubs/messenger/

ADS BibCode:
2000Msngr.100...29J
Section:
The La Silla News Page
Author(s)/Affiliation(s):
Jones, H.
AA(ESO)
Abstract:
The 2p2 Team continued towards the implementation at the 2.2-m of the same BOB (Broker for Observation Blocks) observing interface as seen at other ESO telescopes. This requires an interface to be written between the existing BOB software and the non-VLT compatible control software for the Wide-Field Imager (WFI) and 2.2-m. Cristian Urrutia, Tatiana Paz and Eduardo Robledo are heading its development. With this software in place, observers can use the VLT Phase 2 Proposal Preparation System (P2PP) for definition of their exposures, whether they are for Visitor or Service Mode.

ADS BibCode:
2000Msngr.100...30S
Section:
The La Silla News Page
Author(s)/Affiliation(s):
Sterzik, M.; Kürster, M.
AA(ESO) AB(ESO)
Abstract:
After completion of the 3.6-m upgrade project (about which was reported in the September 1999 issue of The Messenger), we are now in a phase of consolidation, system finetuning, and optimisation. The general operation of telescope and instrumentation has now become very smooth and reliable, and the users are in general very pleased and satisfied with the quality, stability and comfort that is offered to them.

ADS BibCode:
2000Msngr.100...31.
Section:
The La Silla News Page
Author(s)/Affiliation(s):
ESO
AA(ESO)

ADS BibCode:
2000Msngr.100...32P
Section:
Reports from Observers
Author(s)/Affiliation(s):
Pedersen, H.; Atteia, J.-L.; Boer, M.; Beuermann, K.; Castro-Tirado, A. J.; Fruchter, A.; Greiner, J.; Hessman, R.; Hjorth, J.; Kaper, L.; Kouveliotou, C.; Masetti, N.; Palazzi, E.; Pian, E.; Reinsch, K.; Rol, E.; van den Heuvel, E.; Vreeswijk, P.; Wijers, R.
AA(Copenhagen University Observatory holger@astro.ku.dk) AB(CESR, Toulouse) AC(CESR, Toulouse) AD(Universitäts-Sternwarte, Göttingen) AE(LAEFF-INTA, Madrid, and IAA-CSIC, Granada, Spain) AF(Space Telescope Science Institute, Baltimore, USA) AG(Astrophysikalisches Institut Potsdam) AH(CESR, Toulouse) AI(Copenhagen University Observatory) AJ(Astronomical Institute “Anton Pannekoek”, Amsterdam) AK(Astronomical Institute “Anton Pannekoek”, Amsterdam & NASA/USRA, Huntsville, Alabama, USA) AL(Ist. TeSRE, CNR, Bologna) AM(Ist. TeSRE, CNR, Bologna) AN(Ist. TeSRE, CNR, Bologna) AO(CESR, Toulouse) AP(Astronomical Institute “Anton Pannekoek”, Amsterdam) AQ(Astronomical Institute “Anton Pannekoek”, Amsterdam) AR(Astronomical Institute “Anton Pannekoek”, Amsterdam) AS(Dept. of Physics and Astronomy, SUNY Stony Brook, USA)
Abstract:
The authors describe how the VLT promises to integrate space and ground-based observations in a way never achieved before.
References:
Andersen, M.I.A., et al., 2000, in preparation.
Akerlof, C., Balsano, R., Barthelmy, S., et al.,
1999, Nature 398, 400.
Beuermann, K., Hessman, F.V., Reinsch, K.,
et al., 1999, A&A 352, L26.
Bloom, J.S., Kulkarni, S.R., Djorgovski,
S.G., et al., 1999, Nature, 401, 453.
Castro, S.M., Diercks, A., Djorgovski S.G. et
al., 2000, G C N #605 (=
http://gcn.gsfc.nasa.gov/gcn/gcn3/605.gc
n3).
Covino, S., Davide, L., Ghisellini, S., et al.,
1999, A&A 348, 1.
Costa, E., Frontera, F., Heise, J., et al.,
1997, Nature 378, 783.
Djorgovski, S.R., Kulkarni, S.R., Bloom, J.S.,
et al., 1999, GCN #289.
Fruchter, A., Smette, A., Gull, T., et al.,
2000a, GCN #627.
Fruchter, A. et al.,2000b, in preparation.
Galama, T.J., Vreeswijk, P., van Paradijs, J.,
et al., 1998, Nature 395, 670.
Galama, T.J., Vreeswijk, P.M., Rol, E. et al.,
1999, GCN #388.
Galama, T.J., Tanvir, N., Vreeswijk, P., et al.,
2000, ApJ. in press.
Hjorth et al. 2000, in press.
in ‘t Zand, J., Heise, J., Hoyng, P., et al.,
1997, IAU Circular #6569.
Jensen, B. L., et al., 2000, in preparation.
Kulkarni, S., Djorgovski, S. G., Ramaprakash,
A. N., et al., 1998, Nature 393,
35.
Leibundgut, B., Sollerman, J., Kozma, C., et
al., 2000, The Messenger, 99, 36.
Masetti, N., Palazzi, E., Pian, E., et al., 2000,
A&A 354, 473.
Mészáros, P., and Rees, M.J., 1997, ApJ.
476, 232.
Palazzi, E., Pian, E., Masetti, N., et al., 1999,
A&A 336, L95.
Pedersen, H., Jensen, B.L., Hjorth, J., et al.,
2000, GCN #534.
van Paradijs, J., Groot, P.J., Galama, T.J., et
al., 1997, Nature 386, 686.
Vreeswijk, P.M., Rol, E., Hjorth, J., et al.,
1999a, GCN #496.
Vreeswijk, P.M., et al., 1999b, A p J s u b m i t t e d .
Wijers, R.A.M.J., Rees, M.J., and Mészáros,
P., 1997, M.N.R.A.S., 288,L51.
Wijers, R.A.M.J., Vreeswijk, P.M., Galama,
T.J., et al., 1999, ApJ.L. 523, L33.

ADS BibCode:
2000Msngr.100...37R
Section:
Reports from Observers
Author(s)/Affiliation(s):
Rigopoulou, D.; Franceschini, A.; Aussel, H.; Cesarsky, C. J.; Elbaz, D.; Genzel, R.; van der Werf, P.; Dennefeld, M.
AA(Max-Planck-Institut für Extraterrestrische Physik, Garching, Germany) AB(Dipartimento di Astronomia, Università di Padova, Vicolo Osservatorio, Padova, Italy) AC(Osservatorio Astronomico di Padova, Vicolo Osservatorio, Padova, Italy) AD(European Southern Observatory, Garching, Germany) AE(CEA Saclay, Gif-sur-Yvette Cédex, France) AF(Max-Planck-Institut für Extraterrestrische Physik, Garching, Germany) AG(Leiden Observatory, Leiden, The Netherlands) AH(Institut d’Astrophysique de Paris – CNRS, Paris, France)
Abstract:
Two jewels of European astronomy, ISO and ISAAC, join their capabilities to shed light on one important enigma of present-day cosmology.
References:
Altieri, B., et al., 1999, A&A 343, L65.
Aussel, H., Elbaz, D., Cesarsky, C.J., Starck,
J.L., 1999, In The Universe as seen by ISO,
eds. P. Cox, M.F. Kessler, ESA S P 4 7, 1023.
Aussel, H., Cesarsky, C.J., Elbaz, D. and
Starck, J.L.,1999, A&A 342, 313.
Aussel, H. et al., in preparation.
Da Costa et al., 1998, http://www.eso.org/
science/eis/eis-rel/deep/HDF-Srel.html
Clements, D., et al., 1999, A&A 346, 383.
Dennefeld et al. 2000, in prep.
Devillard N., 1998, The Messenger No. 87,
March 1997.
Desert, F.X., et al., 1999, A&A 342, 363.
Elbaz, D., Cesarsky, C.J., Fadda, D., Aussel,
H., et al. 1999 A&A 351, L37.
Fioc, M., Rocca-Volmerange, B., 1997, A&A
326, 950.
Flores, H., Hammer, F., Thuan, T. X . ,
Cesarsky, C., 1999 Ap.J., 517, 148.
Franceschini et al. (2000) in prep.
Kennicutt, R.C., (1992) Ap.J., 388, 310.
H o r n s c h e m e i e r, A.E., et al., 2000, astroph/
0004260.
Lari, C., et al., 2000, in prep.
Leitherer, C., et al., 1999 ApJS 123, 3.
Oliver, S., et al., 2000., in prep.
Oliver, S., et al., 2000, MNRAS, in press, astroph.
Poggianti B., Bressan A., Franceschini A.,
2000, ApJL submitted.
Rigopoulou, D., et al, 1996, A&A, 305, 747.
Rigopoulou, D., Franceschini, A., Aussel, H.,
et al. 2000, ApJL, in press.
Siebenmorgen, R., et al., 1996, A&A 315,
L169.
Starck, J.L., et al., A&A 134, 135.
Sternberg, A., 1998, ApJ 506, 721.
Taniguchi,Y., Cowie, L.L., Sato, Y., Sanders,
D.B., et al., 1997, A&A 318, 1.

ADS BibCode:
2000Msngr.100...42H
Section:
Reports from Observers
Author(s)/Affiliation(s):
Häfner, R.
AA(Universitäts-Sternwarte München)
Abstract:
The elusive nature of NN Ser was discovered in July 1988 (Häfner, 1989a, 1989b) in the course of a search for eclipses in faint cataclysmic variables using the CCD camera on the Danish 1.5-m telescope at La Silla. This target (V ~ 17), then named PG 1550+131 and thought to be such a variable, turned out to exhibit a sine-shaped light curve and a very deep eclipse of short duration repeating once every 3 hours and 7 minutes. Due to the low time resolution of the photometry (3.5 min), the duration of the eclipse (separated by half a period from maximum light) as well as its depth could only be roughly estimated to be about 12 min and at least 4.8 mag respectively. During mid-eclipse no signal from the object was recordable. Two spectra (resolution about 12 Å) obtained near maximum light (A) and near the onset of the eclipse (B) using EFOSC at the 3.6-m telescope revealed mainly narrow emission lines of the Balmer series superimposed on broad absorptions (A) and shallow Balmer absorptions without emission (B).
References:
Appenzeller, I. et al.: 1998, The Messenger
No. 94, 1.
Catalán, M.S., Davey, S.C., Sarna, M.J.,
Smith, R.C., Wood, J.H.: 1994, Mon.Not.
R.Astron.Soc. 269, 879.
Häfner, R.: 1989a, Astron.Astrophys. 213,
L15.
Häfner, R.: 1989b, The Messenger No. 55,
61.
Wood, J.H., Marsh, T.R.: 1991, Astrophys. J.
381, 551.

ADS BibCode:
2000Msngr.100...44A
Section:
Reports from Observers
Author(s)/Affiliation(s):
Appenzeller, I.; Bender, R.; Böhm, A.; Drory, N.; Fricke, K.; Häfner, R.; Heidt, J.; Hopp, U.; Jäger, K.; Kümmel, M.; Mehlert, D.; Möllenhoff, C.; Moorwood, A.; Nicklas, H.; Noll, S.; Saglia, R.; Seifert, W.; Seitz, S.; Stahl, O.; Sutorius, E.; Szeifert, T.; Wagner, S.; Ziegler, B.
AA(Landessternwarte Heidelberg & MPIA Heidelberg) AB(Universitäts-Sternwarte München) AC(Universitäts-Sternwarte Göttingen) AD(Universitäts-Sternwarte München) AE(Universitäts-Sternwarte Göttingen) AF(Universitäts-Sternwarte München) AG(Landessternwarte Heidelberg) AH(Universitäts-Sternwarte München) AI(Universitäts-Sternwarte Göttingen) AJ(MPIA Heidelberg) AK(Landessternwarte Heidelberg) AL(Landessternwarte Heidelberg) AM(ESO Garching) AN(Universitäts-Sternwarte Göttingen) AO(Landessternwarte Heidelberg) AP(Universitäts-Sternwarte München) AQ(Landessternwarte Heidelberg) AR(Universitäts-Sternwarte München) AS(Landessternwarte Heidelberg) AT(Landessternwarte Heidelberg) AU(ESO Garching) AV(Landessternwarte Heidelberg) AW(Universitäts-Sternwarte Göttingen)
Abstract:
During the second half of 1999, the authors carried out a programme to obtain deep photometry in the U, B, g, R, and I bands (as well as in some selected narrow bands) of the FDF. Using an automatic extraction programme, the authors are presently generating a catalogue of the observed galaxies and their colours in the FDF. They also started a statistical analysis of the detected objects and a photometric classification and photometric redshift derivation of all galaxies in the field.

ADS BibCode:
2000Msngr.100...48D
Section:
Data Management and Operations
Author(s)/Affiliation(s):
Devillard, N.
AA(ESO)
Abstract:
Resampling an image is a standard operation used in astronomical imaging for various tasks: changing the scale of an image to superimpose it on another, shifting an image by a non-integer offset, rotating an image by an arbitrary angle, or deforming an image to counter detector or optical deformations, are the usual operations in need of image resampling. In a more general way, this operation is referred to as image warp - ing in the digital image processing world.

ADS BibCode:
2000Msngr.100...51.
Section:
Other Astronomical News
Author(s)/Affiliation(s):
ESO
AA(ESO)
Abstract:
The Republic of Portugal will become the ninth member state of the European Southern Observatory. On Tuesday, June 27, during a ceremony at the ESO Headquarters in Garching (Germany), a corresponding A g r e ement was signed by the Portuguese Minister of Science and Te c h n o l o g y, José Mariano Gago, and the ESO Director General, Catherine Cesarsky, in the presence of other high officials from Portugal and the ESO member states .

ADS BibCode:
2000Msngr.100...52.
Section:
Other Astronomical News
Author(s)/Affiliation(s):
ESO
AA(ESO)
Abstract:
1364. E. Pancino et al.: New Evidence for the Complex Structure of the Red Giant Branch in w Centauri. ApJ.

ADS BibCode:
2000Msngr.100...53K
Section:
Announcements
Author(s)/Affiliation(s):
KJÄR, K.
AA(Technical editor, ESO)
Abstract:
The present Messenger is the hundredth issue to be published. This may be a good moment to look back to the beginning and to the development of this publication. The idea of an internal ESO newsletter was born in the early seventies. Using the words of Professor Blaauw, Director General of ESO at that time and the person who launched The Messenger in its orbit, the purpose of The ESO Messenger should be “first of all, to promote the participation of ESO staff in what goes on in the Organization, especially at places of duty other than our own. Moreover, The Messenger may serve to give the world outside some impression of what happens inside ESO. The need for more internal communication is felt by many of the staff. The dispersion of our resources over several countries in widely separated continents demands a special effort to keep us aware of what is going on at the other establishments...”

ADS BibCode:
2000Msngr.100R..53.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
Abstract:
It is probably not surprising that during the production of 100 issues of The Messenger, also a number of mishaps have occurred. Perhaps the most serious one happened with Messenger No. 4, when an object fell on the printing form, damaging part of the first Messenger page. The damaged letters were exchanged by the printers without submit - ting a new proof to the editors. All the damaged letters were correctly exchanged, except that the Messenger No. 4 was printed and distributed again as No. 1.

ADS BibCode:
2000Msngr.100...54.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)

ADS BibCode:
2000Msngr.100Q..55.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)

ADS BibCode:
2000Msngr.100R..55.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
Abstract:
The European Southern Observatory (ESO) awards up to six postdoctoral fellowships tenable at the ESO Headquarters, located in Garching near Munich and up to seven postdoctoral fellowships tenable at ESO’s Astronomy Centre in Santiago, Chile. The ESO fellowship programme offers a unique opportunity for young scientists to pursue their research programmes while learning and participating in the process of observational astronomy with state-of-the-art facilities.

ADS BibCode:
2000Msngr.100Q..56.
Author(s)/Affiliation(s):
ESO
AA(ESO)

ADS BibCode:
2000Msngr.100R..56.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
Abstract:
Saturday, May 27, turned into a tragic day for ESO. The team installing TIMMI2 at La Silla, went on an excursion to the Elqui valley, 70 km east of the city of La Serena and suffered a serious car accident, crashing against another car driving from the opposite direction.