June 2005:
Darrel Torgerson: DOT with Rob Hammerschlag
Daan van Eijk: DOT top
DOT mirror
DOT platform
DOT cross-leg resonance damper
DOT legs, shadow, data pipe, and SST
Sylvain Rondi: DOT googled from above
October 2004:
DOT overview
DOT in codeso
DOT & WHT in codeso
DOT & WHT
DOT close-up
Rob Hammerschlag & Felix Bettonvil at lunch
Pit Sütterlin at speckle
Rafael Kever opening up ATST seeing monitor
Rafael Kever and ATST seeing monitor
SST
SST top
SST turret
Rolf Kever opening SST drive
Rolf Kever & Rob Hammerschlag repairing SST drive
Viggo Hansteen, Mats Carlsson &
Luc Rouppe van der Voort in SST control room
Misty Magic
TNG
Grantecan
Caldera at sunset
Photographs by Sylvain Rondi, October 2004:
Rob Hammerschlag opening up
DOT at sunset
DOT at night
Installation of the Halpha filter, September 2004:
Lyot filter in control box
Mounted on DOT
DOT pointed at sun
DOT top
During a Utrecht University site visit, August 2003:
DOT seen from the SST
Platform and telescope (by Henrik Rudolph)
Platform from below (by Henrik Rudolph)
Mount and mirror
Telescope top (by Henrik Rudolph)
Norbert Langer,
Willem Hendrik Gispen, Will de Ruijter,
Rob Hammerschlag & Pit Sütterlin
on the DOT platform
Ed van den Heuvel, Werner van der Weg,
& Göran Scharmer
Felix Bettonvil & Rob Hammerschlag at the SST
SST seen from the DOT, with DOT image pipe
ATST site survey tower
During a KNVWS Werkgroep Zon visit, April 2003:
Group assembly
Mounting more channels, March 2003:
Multi-channel suppport
Multi-channel support with Bettonvil
Multi-channel support with Aswin Jägers
Four-channel optics complete
Six-hand four-camera cabling
Utrecht, DOT speckler definition, November 2002:
Alfred de Wijn + sketch
Aad van der Steen
Felix Bettonvil
Pit Sütterlin
Michiel van Noort
result
Observing after snow, April 2002:
Roque de los Muchachos overview
DOT, WHT, SST: three very different telescopes
DOT with ice
DOT ladder with ice
DOT top within closed canopy
DOT, WHT, SST during solar observing
DOT pointed at the sun
DOT pointed at the sun: cutout
Open DOT with Bettonvil & Sütterlin
Sütterlin observing the
camera in DOT control room
Sütterlin observing the sun in DOT control room
Darrel Torgerson's 2001 DOT photographs:
DOT with sunrise mountain shadow
DOT with low sun
DOT in full glory
DOT with setting sun
DOT with binary sun
DOT with green flash
DOT with clouds
Data-acquisition system, February 2001:
Hammerschlag mounting a filter
New G-band channel (on-axis tube)
Close-up of G-band tube
Close-up of prime focus
Fiber connectors on DOT
Fiber exits in Swedish building
Five-computer image acquisition rack
UPS (safeguard against lightning damage)
Mechanical structure, 1999-2001:
DOT with cooling water tank & pipe
DOT on its platform
Close-up of DOT on platform
DOT drives
DOT primary
Tower bottom with workshops
Tower bottom with workshops
Tower bottom with fallen ice
In less good weather, October 1999:
DOT open, with water tank
DOT top, with prime focus tube
Primary mirror (covered) with declination wheel,
support struts, guider scope
Mirror with strut connectors, suction hose
Hour-angle wheel and mirror support
Seykora-Beckers scintillometer
with anti-falcon needle
Data pipeline to the Swedish building
R. Hammerschlag in his telescope
R. Hammerschlag as DOT surgeon
C. Denker, Ph. Goode, L. Strous, R. Hammerschlag
R. Hammerschlag, F. Bettonvil, F. Paletou
R. Hammerschlag, F. Bettonvil, G. Molodij
SVST from DOT, F. Bettonvil on the ladder
DOT closed, R. Hammerschlag on the ladder
Clouds over DOT and WHT
During optics tests, November-December 1997:
DOT pointed at the sun
DOT close-up
DOT at sunset in Sahara dust
At the First Light Ceremony, October 31, 1997:
Site overview looking North
DOT and WHT: two telescopes sharing royal interest
G. and R. Hammerschlag,
C. van Scheijndel,
E. van der Zalm,
T. van Schie,
F. Bettonvil
J. Carlos Torres
and L. Pérez Machin with champagne
V. Martinez Pillet, O. von der Lühe
J. van Himbergen, F. van den Beemt
J. Veldhuis,
W. Bentinck van Schoonheten,
J. Ritzen,
M. Hermoso Rojas,
Prins Willem-Alexander van Oranje
Speech by R. van Duinen
Speech by J. Veldhuis
Speech by J. Ritzen
DOT First Light Ceremony
performed by Prins Willem-Alexander and M. Hermoso
Rojas
Prins Willem-Alexander
and R. Hammerschlag in DOT elevator
Within the canopy, 1997:
DOT mirror + focus
DOT mirror + laser
DOT mirror covered, with Rob Hammerschlag
DOT focus
DOT focus with Felix Bettonvil
DOT with ghosts
On La Palma, 1996:
DOT on its tower, with Anke and Rob Hammerschlag
DOT and SVST
DOT as part of the skyline
DOT platform hoisting
DOT tower fastening
DOT christening ceremony
In Delft, 1990 - 1996:
DOT clamshell canopy
DOT builder Rob Hammerschlag and his telescope
DOT technician Piet Hoogendoorn with DOT gears
On paper, 1975:
DOT sketch