Photographic History of Table Mountain
Observatory
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Part 5: Optical Astronomy
Expands: New Telescope,
Equipment, Programs, and Personnel
By James W. Young
retired astronomer from Table Mountain Observatory
The new Nishamura 16-inch f/20 Cassegrain Telescope
The new telescope building is finished, an 'ObservaDome' is
placed on the top edge, and
finally the newly purchased telescope is then installed. Follow
along with the history of
this facility....
The finishing touches of the
building structure in June 1962
The concrete telescope pier at
the upper level to hold the 16-inch telescope
The new 'ObservaDome'
arrives at Table Mountain
...and placed on the
building...July 1962
The building was ready for the
16-inch telescope installation in July 1962
Telescope installation,
adjustments, and finished; ready for use! - late July 1962
The 16-inch telescope had four
different finder scopes: a 6-inch, 4-inch, 3-inch and 2-inch
refractors. The two inner wood knobs locked the axes,
the two outer knobs allowed the
operator to move in RA or Dec axes slowly for searching and acquiring
the desired object.
The finished telescope -
August 1962
JPL's 'Lab-oratory' magazine
featured the new Table Mountain Telescope
The author familarizing himself
with the new instrument - December 1962
Taking imagery with the 3
1/4 x 4 1/4 inch plate camera - December 1962
h
Capen taught the author how to
draw planetary features while observing. Here are two such drawings of the Great Red
Spot
on Jupiter made in December 1962
Capen and Young at the
telescope. Capen is guiding on a comet, while Young is exposing
film using a 35mm camera - Spring 1963
Young (left) and Jack Lyon
removing snow from the telescope dome; frequently done in the
winter months - Winter 1962-63
A cold winter morning in
January 1964
A sunscreen attached to the
telescope dome, supported and moved by Jack Lyon on the left, with Mars Capen (Capen's
older son) on the right. This screen was necessary to block out the nearby sun while
imaging the Venus inferior conjunction in June 1964
The sunscreen made by Capen
and Young
Our best 'inferior
conjunction' image of Venus in June 1964
The synoptic patrol of the four
brighter planets in various wavelengths was made every
clear night. Each photographic plate was logged, and an envelope
was made to hold the
plate after processing. The envelope included the log #, the
object, the date, the time,
the telescope and focal length, the emulsion wavelength (in this case,
a III-O was for
blue light), a filter (if used), the atmospheric seeing and sky
transparency, the shutter
exposures used, the processing developer and time of processing, and
finally the initials
of the observer(s). In the above case, JWY is for the author, and
FY is for Frances,
the author's wife who assisted the observation.
The images to the right are of Jupiter, and is the actual contact print
of this particular
observation - October 1964
Capen and Young inspecting
images using a light panel
Young demonstrating the
processing of Kodak photographic glass plates
Young preparing the
enlarger to print images from a glass plate
Charles Capen and family:
Standing, L to R; Mars, Chick, Virginia. Down in the
snow,
L to R; Rigel, Volk and Kometa (Capen's two Siberian huskies) Winter
1963-64
The new Butler building
west of the 16-inch telescope building in 1964
The two newest buildings at
Table Mountain, now in a numbering scheme: the telescope
building is now TM-1, and the Butler building is TM-2. The two
original Smithsonian
bunkers (off the image to the lower left), were numbered TM-3
collectively.
After 3 harsh winters, the
original 'ObservDome' was found too difficult
in keeping the snow and serious winds ourt of the inside telescope
viewing
area. Here it is being removed in July 1965.
Capen, and JPL, contracted for a
new and better weather rated dome from Ash Dome in
Plainfield, Illinois. The owner-operator, Ole Olson (right) and
his assistant prepare the
top edge by leveling the base of the new 16-foot dome
installation. It was learned from
them that this was the most critical preparation for installing their
dome.
The finished 'Ash Dome' atop the
telescope building, TM-1 - July 1965
Capen and Young set up a small
observing table, along with a shortwave radio,
a WWV receiver, tape recorder, eyepiece cases, tools, glass filters,
and two
drawers for extra materials - Fall 1965.
The complete telescope in
the summer of 1966
A four-planet conjunction with
the crescent moon on August 14, 1966. Mercury is the
faint one just above the center tree, the going up is Venus, further up
is the moon, with
Mars and Jupiter to the right of the moon. The two stars in the
constellation of Gemini
are above the moon slightly to the left; Pollux and Castor.
The magazine 'Popular
Astronomy' featured an image of the 16-inch telescope with the
conjunction of Venus and Jupiter taken in August 1966.
A very rare red aurora
graced the skies over the Mojave Desert northeast of Table Mountain
on the evening of April 21, 1981.
During a heavy rainstorm in
September 1981, a bright nearby lightning strike was imaged
about the 16-inch telescope building.
TM-1 newly painted and used by
the Claremont Colleges under the direction of Dr. Sandy
Sandmann. The Beila 16-inch telescope was removed in 1975, and
Sandmann installed a
more modern Ealing 16-inch f/11 Cassegrain telescope for his study of
variable stars.
In the 1990s TM-1 was
converted for a new use by JPL's Richard Cageao: A Fourier Transform Ultraviolet Spectrometer (FTUVS) is a high resolution interferometric
spectrometer for the measurement of
atmospheric molecules with resolved spectral
features in the 290-800
nm spectral region. This instrument uses the Sun or Moon as
a light source, and thus measures the
absorption
spectra of particular molecules.
The optical devices and
mirrors of the FTUVS system now in TM-1 - 2003
The 10-inch f/2 Schmidt Camera
In early 1984, JPL's John Trauger was informed of an old 10-inch
Schmidt camera owned
by Ted Haberman of San Dimas, California. Haberman was willing to
loan this 'camera' to
Table Mountain for photographing Halley's Comet in late 1985 into
1986. Trauger, Steve
Edberg (JPL's International Halley Watch), and the author traveled to
San Dimas to inspect
the instrument. It was aesthetically in poor condition, but the
mirror and corrector plate
appeared to be perfectly fine. Haberman also agreed that the
author was to completely
clean, refurbish, and maintain the instrument in perfect working
condition for the period of
the loan, and then return it after the passage of Halley's comet.
All loan paperwork was
completed in March, and the instrument was transported to Table
Mountain in a JPL van.
Coincidentally, the entire radio science effort at Table Mountain had
just been moved north
to the 'Caltech Owens Valley Radio Observatory', thus leaving
TM-21 completely vacant to
use for cleaning and the refurbishment of Haberman's Schmidt
camera. The author spent
just over 270 working hours, well into 1985, before completing the task.
The Schmidt camera at Ted
Haberman's San Dimas home in January 1984
TM-24 floor and building
foundation - Summer 1985
TM-24 building wall - Summer 1985
10-foot Ash Dome construction for
TM-24 - September 1985
The complete refurbished 10-inch
Schmidt camera - 1985 - with the author.
The complete refurbished 10-inch
Schmidt camera - Summer 1985
Sliding door enclosure to access
the internal film holder (opened at center). The second sliding door enclosure (closed at
right center) allowed access to the focus knob.
Table Mountain facility staff
member, Marty Schmoe (right), guiding the Schmidt camera tube assembly into the
TM-24 dome - September 1985
Installed Schmidt camera ready for
testing - October 1985
The completed TM-24 building and
entry ladder (outside and inside). The user manually opens the small square entry door
on the dome wall (next to the top of the ladder) to access the dome shutter opening
controls to open the shutter. The user then climbs up the ladder, over the lip, and
climbs down the inside ladder to complete an entry for use. The electrical power and phone
line enters the building through the black sewer pipe seen on the lower right of the dome
wall. November 1985
The owner of the camera, Ted Haberman, visited the observatory in
November 1985
The author showing the Schmidt camera to fellow astronomer, Jim Gibson
in early 1986.
All alignment and focus tests of the Schmidt telescope were completed
during the winter of
1985-86. This image of the Orion Nebula was the first
serious photograph obtained after
all of the preparations were made for its primary use to
photograph Halley's Comet starting
in March 1986 when the comet became a morning object.
Halley's Comet - Schmidt Camera
March 9, 1986
March 19, 1986
March 20, 1986
This was the best image of Halley's Comet which showed a split tail.
March 22, 1986
NOTE: After 1986,
Haberman's health deteriorated to the point he
no longer wanted the
camera returned, so JPL purchased it from him
for $10,000.
In 2002, the Schmidt camera was removed from TM-24, and a new RC
Optical Systems
16-inch f/9 telescope was installed to supplement the astrometry
science being done with
the 24-inch in TM-12. This new change was done under the
direction of Gil Clark, our
new Table Mountain Astronomy Supervisor.
The new RC Optical Systems
telescope, with Gil Clark on the telephone - 2002
Two views of the RC Optical
Systems 16-inch telescope