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2681. ARC Projects
Caption above photo . Beginning pictures for setting mirror fiduciaries. Steve Bastian/FNL is seen drilling location holes in the mirror cell. More prep work. Also, note new status board located inside the enclosure. The M1 is scheduled to be brought into the enclosure on Monday. Photos taken by Gretchen Van Doren/APO.
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/mirrorfid0108/mirrfid0108.html -- 1.6 Кб -- 08.01.1999
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2682. SDSS Projects
... Bill Boroski, Larry Bartoseck, and Zhijing Tang (all from FNL) wsere on site to take data on the azimuth rotation. Reports are that good data was obtained and they have returned to FNL to evaluate. Ron Yarger/APO has been working on the Neslab cooler... the coolant loop pump... and the compressed air system. Word is the cooler is working, the coolant pump is working, and Ron is placing filters on the compressed air lines. Photos taken by Gretchen Van Doren/APO. ...
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/air0108/tweak0108.html -- 1.9 Кб -- 08.01.1999
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2683. ARC Projects
. These are some general photographs of the Echelle instrument. Photos taken by Gretchen Van Doren/APO.
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/echelle0108/echphoto0108.html -- 1.5 Кб -- 08.01.1999
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2684. Fiber Throughput Results
... University of Washington . ... Results . ... To facilitate assembly, testing, record keeping and maintenance, the optical fibers are organized into fiber harnesses, each containing twenty individual fibers. ... Figure 4: Measured throughput of the fibers in 318 harnesses that satisfied testing by the University of Washington. ... The histogram of throughputs for the worst fibers in each harness (Figure 8) shows that only a few harnesses have fibers that are measured to have less than 90% throughput....
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Ссылки http://www.apo.nmsu.edu/Telescopes/SDSS/eng.papers/19970403_FiberTestingI/19970403.html -- 12.8 Кб -- 30.12.1998
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2685. SDSS Rotator
The new intstrument rotator was delivered today. Note that the rotator is loaded as the front of the truck bed, thus making it impossible for the truck to back out onto the pier. The fork lift is fitted with the boom extension to maneuver the box out to the pier. The crate is lifted off the truck and walked out to the pier. The rotator is stored in the enclosure and our happy truck drivers hed off to their next delivery. Pictures taken by Gretchen Van Doren/Apache Point Observatory.
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/122298rotdel/rotatdel/rotdel.html -- 1.8 Кб -- 23.12.1998
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2686. SDSS Projects
... French Leger inspected the new rotator at Ideal Machine (Tacoma, WA) and took these pictures. ... The turning machine (on right) and turn table (on floor) at Ideal Machine are pictured. the platen used for the rotator is shown laying flat on the table. ... The rotator's ring shown on edge. ... The rotator's inner ring packed for shipment. The inner ring's flange mounting tab for attaching to the outer ring (lower edge of ring). ... Access holes on inner ring and then latch mounts. ...
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/rotate121898/rotfab.html -- 2.4 Кб -- 18.12.1998
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2687. Spectrograph Chiller
Mike Carr and Jon Brinkmann have steadily been working on the construction of the spectrograph chiller. From the early part of the week Jon Brinkmann works on the bench with the fans. The body of the chiller is in the background. Mike and Jon work on installing the parts into the body of the chiller. Can you tell Mike is excited with the chiller's progress!! The fan assembly shown inside the body. ... Pictures taken by Gretchen Van Doren/Apache Point Observatory. ...
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/19981211chill/chill.html -- 1.8 Кб -- 11.12.1998
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2688. Fiducial Controls
Take a look at the day we had yesterday. The tarp was a casualty of the +40mph winds, as well as the sleet and snow. ... Now look at today! ... Bill Boroski, Angie Prosapio, and Glen Federwitz, along with Steve Bastian have been installing the fiducial controls. The small bar code head installed on the east side. ... The first picture is preferred. The second picture is an alternate. Pictures taken by Gretchen Van Doren/Apache Point Observatory. ...
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/19981211fid/fid.html -- 2.1 Кб -- 11.12.1998
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2689. Plug-plate coordinate system
... Coordinate system . It is necessary to specify the coordinate system for the drilling of plug-plates so that the drilling file (currently named plPlugMap), plate drilling, cartridge, rotator wrap and the rotator itself are compatible. ... The TCC rotator angle (object system) is defined to be 0 degrees for this orientation. ... Thus, the rotator angle gives the conventional astronomical position angle on the sky of the y axis (although Russell won't acknowledge this necessarily). ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/SDSS/eng.papers/19981113_PlugPlateCoord/19981113.html -- 6.6 Кб -- 18.11.1998
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2690. ARC Projects
... Todays crew: Connie, Shu-i, Lrry, Mark, Dave, Jon Brinkmann and helpful instrument hints from Jim Gunn . The back end of the echelle is prepared to lift to the observing level. ... The crew begins to lower the back end down into the hold area and to the rear of the echelle. ... Getting ready to remove the plexiglass cover on the tank and the plate across the back end. ... The back end meets the tank and Connie and Shu-i tighten the mounting bolts. ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/einstall1116/ein5.html -- 2.7 Кб -- 17.11.1998
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2691. SDSS Progress Reports
... On Thursday, 11/12, Bill Boroski, Bob Nagel, Steve Bastian and John Davis continued to pursue the oscillation in the windscreen and lubricating the cone bearings. Bill was able to install the bar coder for the altitude drive. ... On Friday, 11/13, Charlie Briegel continues to work on motion controls. ... Bill has also installed the bar coder for the azimuth drive. And Steve along with Bob Nagel clean the bearings with mineral spirits in preparation for applying the new lubricant. ...
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/19981113controls/controls.html -- 2.8 Кб -- 13.11.1998
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2692. ARC Projects
... Shu-i/Connie (kinda); Mark,Dave, Ron, with Carroll and Lonnie from CVE. The floor hatch is removed and lowered to outside the enclosure. CVE has set up shop and begins amputating a leg from the floor hatch to accommodate the Echelle. Note the sparks flying!! ... During this refitting, the Echelle, primary and secondary mirrors are protected. ... Apparently, when lifting the hatch down for refitting, the 1-ton hoist developed a chain problem, so Dave and Ron jump to to repair. ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/einstall1113/ein4.html -- 2.1 Кб -- 13.11.1998
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2693. ARC Projects
... Alignment is completed (so far) and it was time to address the installation of the camera. A miscalculation has the camera running into the removeable floor hatch. As an illustration, the group prepares a crude template of the camera. After some preliminary discussion the template is put in place. Note the floor hatch has been removed. To reconfirm the template size, the template was placed against the camera. ... Additional installation pictures tomorrow. ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/einstall1111/ein3.html -- 1.9 Кб -- 13.11.1998
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2694. ARC Projects
... Today's crew is Jeff Sundwall, Shu-i Wang, Larry Fiscelli, and Dave Woods. ... Jeff has everything set out to mount the front end of the camera and work on the alignment. ... The front end is hoisted and alignment supports are attached to the back. A different angle on the installation while folks tighten this and that. Shu-i and Jeff unpack alignment rods. ... Shu-i adjusts the collimator while Jeff adjusts the mirrors while working the laser (note right arm). ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/einstall1110/ein2.html -- 2.1 Кб -- 13.11.1998
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2695. ARC Projects
... The day is COLD and WINDY (60+mph). Connie Rockosi, Larry Fiscelli, Jeff Sundwall and Shu-i Wang, along with Mark Klaene and Dave Woods start in on the long day. The installation area is readied for the tank. The tank is strapped to the 5-ton hoist (lowered from the observing level), slack is taken up, and hoisted to the observing level. ... The tank is lowered to the mount and the gimbels are secured and adjusted. Now the 70+mph winds pound on the building and driving the cold. ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/einstall1109/ein1.html -- 2.5 Кб -- 13.11.1998
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2696. ARC Projects
... Pre-assembly and testing of the echelle goes on in the 2.5m work area and on the intermediate level of the 3.5m. Jeff Sundwall/UC has arrived to contribute to the effort. He lends his expertise and light touch making adjustments to the camera. ... While Jeff moves on to work on the front end of the camera. The work being done on the observing level has been moved back downstairs. ... Shui and Connie are putting the optics into the tank this weekend. The tank should be mounted on Monday. ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/etest1106/etest.html -- 2.0 Кб -- 13.11.1998
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2697. ARC Projects
. Caption above photo . Charlie Briegel, Bill Boroski, and Steve Bastian started work on the fiducial and motion systems. Bill Nagel is also on site to review the systems and help in these efforts. Friction has caused an evaluation of the cone bearing. Here the ring seal is removed. The ring is raised and the bearing exposed. Close-up of the bearings. The lubrication protecting the bearings is being drained. Further evaluation continues. Photos taken by Gretchen Van Doren/APO.
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/controls1111/fiducials.html -- 1.8 Кб -- 11.11.1998
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2698. SDSS Projects
John Koreniek and Carl Lindenmeyer (both from FNL) were on the mountain to evaluate the lift for the camera and work on the manipulator arm. Yes, that's them in the photos!! ... John and Carl do the "APO-wait-and-see" while the lift holds the load. ... While Carl and John wait, Steve Bastian (in the background sitting on the deck helps Charlie Briegel work on moving the rotator. ... The dewpoint equaled the humidity down on the basin and they had a thick layer of clouds at about 5,000 ft. ...
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Ссылки http://www.apo.nmsu.edu/Site/SDSS.progress/fnllift19981106/fnllift.html -- 2.4 Кб -- 06.11.1998
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2699. ARC Projects
... CARCES (C-hicago, ARC, E-chelle, S-pectrograph) arrived on site Sunday afternoon, 11/1/98 by Roberts Express. Shu-i Wang and Connie Rockosi (both from UC), plus Mark Klaene, Ron Yarger, and Dave Woods (all from APO) began unloading Monday morning. Room is made in the bottom of the enclosure by moving the scaffolding (rented for the echelle) upstairs to the Observing level. ... Then the boxes of stuff started coming off. ... Camera crate. ... The last of the camera boxes . ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/edeliver1102/edeliver.html -- 2.7 Кб -- 02.11.1998
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2700. Primary mirror supports
... In the case of the 2.5-m telescope primary mirror, the support actuators are air pistons. The 48 axial and 18 transverse air pistons support the axial and transverse components of the mirror weight vector respectively. ... Piston force . ... To measure the response of an air piston to transverse forces, a transverse piston was loaded with 11 kg lead bricks and pressurized using a syringe (Figure 3). ... Figure 4: The air piston acts like a spring with hysteresis in response to a side force. ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/SDSS/eng.papers/19981019_1rySupportIV/19981019.html -- 10.6 Кб -- 27.10.1998
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