1.
WINDOW and ECLIPSE VIEWING AREA METROLOGY
Good News! Garry
Studd, Deputy Chief Pilot for Skytraders, has written to confirm: "We
WILL remove the window trim/inboard plexiglass cover for the flight."
Thus we will NOT have in place an (unnecessary) extra layer of
plexiglass to get between your eyeballs (or camera/binocular lenses)
and the actual cabin-side window surface, i.e. less internal
(inter-surface) reflections and a clearer/sharper view. This also
obviates concerns about condensation (or frost) formation on
unreachable surfaces in the otherwise existing "air gap" between the
plexiglass cover (outboard surface) and actual window (inboard
surface). MANY thanls to Skytraders for understanding the needs
of eclipse-chasers and agreeing to do this for us!
Garry has also now provided detailed measurements of the window and
viewing areas, given below,
that EFLIGHT 2010 participants can use to make their individual
observing and photographic/imaging plans.
C = 53
cm Inter-window centreline distance (most windows: a
few have larger inter-window spacings; see below [a])
L = 30 cm
Window Length: glass area, trim removed
W = 21 cm
Window Width: glass area, trim removed
T = 114 cm Top
of window to floor vertical distance
B = 86 cm
Bottom of window (actual surface, not trim) to floor vertical distance
D = 0 cm Top
of window protrusion distance vertical to cabin floor edge [b]
0/ = 14 deg Tilt
angle (top inward) of window with respect to vertical [c]
R1 = 44 cm
Cabin wall to center of outboard seat rail
R2 = 96.5 cm Cabin wall to
center of inboard seat rail
[a] The photo in the left panel below shows the window placement with
respect to the level of the floor (B to the window bottom, and T to the
window top), as well as the "center-to-center" separation of the
windows. This window spacing is the same for all windows on the
aircraft except window #14 (in the over-wing emergency door) and window
#12 (which has additional space around each side).
[b] The center panel figure indicates a downward projection of the
window-top onto the floor is inboard (by a distance D) of bottom of the
wall. Garry has informed there is no offset and D is zero.
[c] The
windows themselves, as mounted on the aircraft fuselage, are "tilted"
inward at the top by appx 14 degrees (theta), which is
very beneficial
for our observing the eclipse at 46 degrees above the astronomical
horizon.
And, of course, note, the seats (shown in the pictures here) will be
removed on the sun (left) side
so will not interfere with window access.
Here is a
Document from Airbuss
that includes a detialed, to scale, drawing of the interior window
surface in its seal. Form that the actual shape, as well as size,
of the useful window surface and area can be readily seen.
A few people have asked about the possibility of securing tripods to
the floor by some attachment to the seat rails (shown with their
cosmetic covers in place in the right photo). Skytraders for has
provided us with detailed drawings of the
SEAT
TRACK ASSEMBLY (click here) and a
TRACK
SECTION (click here) for those who may wish to make use of them
(the cosmetic covers can be easily removed).
Weighted
tripods on the floor should be self-steady, but other than
attaching (or connecting) into the seat rail system, alternatively,
tripod feet with a
suitable flat bottom flange could also be be "velcroed" onto the
aircraft floor to prevent accidental jostling if bumped. As a note, an
another option for securing cameras etc., is by means of a (vacuum)
suction cup camera mount atatched to the aircraft cosmetic wall panel
next to the window.
For completeness, here are some photos provided by Skytraders
confirming the window dimensions above:
- Window with
Plexiglass Cover Removed
- Window Length Measure
- Window Width Measure
2. PLACEMENT of WINDOWS ALONG THE
FUSELAGE AND RELATIVE TO WING
A few people have asked as to the placement of specific windows with
respect to the aircraft wing in order (for some) to provide some
foreground context for wide-field photographs (shadow bands,
anyone?). The pictures (and drawings) below illustrate the
placement of the windows with respect to the aircraft wings (click to
see twice as large). We will be interleaving single and shared
window users to provide the most space ("elbow room") for eclipse
observing while also allocating observing windows in close proximity to
individual participant seats on the right side of the aircraft.
If anyone has a specific particular preference in the business or
economy class sections for (see
this
page),
we will do the best we can to accommodate as closely as possible
("first booked, first assigned"). Note that the sunside
aircraft wing tips are"in line" with windows 26/27 (row 12), even with
a dihedral angle of a few degrees under lift, and will "come up" only
to about the level of the windows themselves and in no way will
interfere wit the viewing of the eclipse.
CLICK
HERE to
see the above picture twice as large.
Window #3 is the front most usable window on the Skytraders aircraft
(windows 1 and 2 right begin the front door are obscured)
3. VIEWS THROUGH the
ECLIPSE-VIEWING WINDOWS
Skytraders has provided photographs
through
each of the sun-side windowsto confirm the optical quality of the
windows as suitable for eclipse viewing. Each picture was taken
to "fill the frame" through the window with a distant scene, but not
with the camera very close to the windoe in order to show the window
frame in context. Nnot all were taken "straight on" due to camera
placement limitations with the seats (and intrac-cabin bulhead for #19)
then in place. To "look through" any window, click on the window
number below.
03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 <- across
from business class seat rows 1 – 7
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
<- across from
economy class seat rows 8 – 16
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2010 MAIN PAGE