(click image to view & discuss) |
Mercado (marketplace) at Juarez
Submitted by
Paul Valleli
on 01/16/2007 14:30:50
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(click image to view & discuss) |
Solar Halo at Ft. Davis
Submitted by
Paul Valleli
on 01/16/2007 14:35:52
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(click image to view & discuss) |
ElPaso_TX
Submitted by
Paul Valleli
on 01/16/2007 15:14:01
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(click image to view & discuss) |
AxsysSurveillanceCameras
Submitted by
Paul Valleli
on 01/16/2007 15:14:42
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(click image to view & discuss) |
BorderCrossingatJuarez
Submitted by
Paul Valleli
on 01/16/2007 15:15:48
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(click image to view & discuss) |
Ft_Davis,TX
Submitted by
Paul Valleli
on 01/16/2007 15:17:13
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(click image to view & discuss) |
Ft_Davis,TX2
Submitted by
Paul Valleli
on 01/16/2007 15:18:08
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(click image to view & discuss) |
Juniper Pass to McDonald Obs.
Submitted by
Paul Valleli
on 01/16/2007 15:19:15
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(click image to view & discuss) |
Prude Ranch near Ft.Davis-Texas Star Party location
Submitted by
Paul Valleli
on 01/16/2007 15:20:37
|
(click image to view & discuss) |
PeterArmstrong(formerOwner)and MMODr.VladimirStrelnitski new owner
Submitted by
Paul Valleli
on 01/16/2007 15:22:10
|
(click image to view & discuss) |
Gary Walker at MariaMitchell Obs. new 24-inch R-C
Submitted by
Paul Valleli
on 01/16/2007 15:23:08
|
(click image to view & discuss) |
McDonaldObs.Sundial in Winter
Submitted by
Paul Valleli
on 01/16/2007 15:23:54
|
(click image to view & discuss) |
HET Dome and Laser Aligner Tower
Submitted by
Paul Valleli
on 01/16/2007 15:26:19
|
(click image to view & discuss) |
HET Secondary Corrector System & Alt-Az Mount A spherical primary can be corrected for Spherical Aberration,Coma, and Astigmatism with a Mangin -Relay lens Combo (ATMoB member Don Dilworth design) or with a modified Abbe Reflector-Corrector - requires spacing, tilt, and decenter adjustments. Another way is with a strongly Hyperbolic secondary -very tiny FOV
Submitted by
Paul Valleli
on 01/16/2007 15:38:53
|
(click image to view & discuss) |
Dome Exhaust Vents open at Sunset
Submitted by
Paul Valleli
on 01/16/2007 15:39:39
|
(click image to view & discuss) |
Mirror Structure - 96 segments
Submitted by
Paul Valleli
on 01/16/2007 15:40:16
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(click image to view & discuss) |
Azimuth Slip Rings
Submitted by
Paul Valleli
on 01/16/2007 15:40:49
|
(click image to view & discuss) |
Mirrors & Structure - edge-on
Submitted by
Paul Valleli
on 01/16/2007 15:43:26
|
(click image to view & discuss) |
Dome Structure
Submitted by
Paul Valleli
on 01/16/2007 15:44:00
|
(click image to view & discuss) |
Azimuth Air Bearing Pad
Submitted by
Paul Valleli
on 01/16/2007 15:44:52
|
(click image to view & discuss) |
Design of Mirror Support In the background is a set of charcoal drawings made during the telescope construction by Artist Greg Mort who lives in MD but owns Russel W. Porter's former home and farm in Pt.Clyde, ME
Submitted by
Paul Valleli
on 01/16/2007 15:47:42
|
(click image to view & discuss) |
42-inch Mirror segment & mount
Submitted by
Paul Valleli
on 01/16/2007 15:48:24
|
(click image to view & discuss) |
HET Mirror segment Support structure
Submitted by
Paul Valleli
on 01/16/2007 15:49:02
|
(click image to view & discuss) |
Dome Aperture in process of opening
Submitted by
Paul Valleli
on 01/16/2007 15:50:13
|
(click image to view & discuss) |
HET Control Room -Dr. Strelnitski
Submitted by
Paul Valleli
on 01/16/2007 15:51:02
|
(click image to view & discuss) |
HET Control Room
Submitted by
Paul Valleli
on 01/16/2007 15:51:32
|
(click image to view & discuss) |
Cold Room F.O. Spectrograph
Submitted by
Paul Valleli
on 01/16/2007 15:52:11
|
(click image to view & discuss) |
F/1 Camera for spectrograph
Submitted by
Paul Valleli
on 01/16/2007 15:52:43
|
(click image to view & discuss) |
Fiber Optic spectrograph
Submitted by
Paul Valleli
on 01/16/2007 15:53:26
|
(click image to view & discuss) |
107-inch Reflector & 82-inch scope
Submitted by
Paul Valleli
on 01/16/2007 15:54:11
|
(click image to view & discuss) |
107-inch Reflector - the one that a deranged optician shot seven times The 45 Magnum spalled 7-inch diameter craters in the surface - hardly any light loss. just were painted black.
Submitted by
Paul Valleli
on 01/16/2007 15:56:22
|
(click image to view & discuss) |
25 Meter Radio telescope Down in the valley from McDonald Obs. is one 25 meter Radio telescope antenna of an array that stretches around the world for VLBI - very long baseline interferometer
Submitted by
Paul Valleli
on 01/16/2007 15:59:15
|
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