0
0.0
Jan 15, 2021
01/21
by
Stuart Weenig (sweenig)
data
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I couldn't find a simple pinhole projector that would do multiple projections, so I made one. The main version has 81 pinholes, the x1 version only has 1 pinhole. I scale it in my slicer to be 100mm x 100mm x 1mm, which takes about an hour to print the 81 hole version at 0.2mm layer. Warning, this will not protect your eyes from the sun at any time. Do not put this between your eyes and the sun. Just hold the thing up and let its shadow hit the ground. Where the light comes through the...
Topics: thingiverse, Eclipse, stl, solar_eclipse, total_solar_eclipse, Physics & Astronomy,...
White-light and hard X-ray (HXR) observations of two white-light flares (WLFs) show that if the radiative losses in the optical continuum are powered by fast electrons directly heating the WLF source, then the column density constraints imposed by the finite range of the electrons requires that the WLF consist of an over-dense region in the chromosphere, with density exceeding 10 to the 14th power/cu cm. Thus, we recommend that P/OF search for evidences of over-dense structures in HXR images...
Topics: NASA Technical Reports Server (NTRS), OCCULTATION, PINHOLE CAMERAS, SOLAR FLARES, SOLAR X-RAYS,...
0
0.0
Jan 20, 2021
01/21
by
Tim T (t2sqred)
data
eye 0
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comment 0
Pinhole Shutter assembly designed to fit into a large format lens board with a Copal 0 shutter hole. Tap to 6-32 threads the 6 holes in the middle plate and the pivot hole for the shutter. Acquire 6-32 nylon fasteners and cut to length. Intended to be used with Lennox Laser pinholes.
Topics: pinhole_camera, photography, Camera, thingiverse, pinhole, stl
97
97
Feb 24, 2016
02/16
by
Beijing Youth Daily Group
texts
eye 97
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comment 0
Beijing, China newspaper published 2001–2016 by the Beijing Youth Daily Group.
Topics: beijing, yuan, chinese, china, pinhole, march, olympic, tunpu, photo, hair loss, hong kong, chu...
187
187
Jul 15, 2011
07/11
by
Asier Gogortza
texts
eye 187
favorite 0
comment 0
Asier gogotza's pinhole photografic work
Topics: concrete, landsapes, pinhole, gogortza
10
10.0
Feb 10, 2014
02/14
by
Marilyn Wetston and Team
audio
eye 10
favorite 0
comment 0
Marilyn Wetston ( www.marilyns.ca ) gives it to you straight "From a Woman's Perspective" on AM 740 every Saturday morning at 8. This Saturday Dentist Dr. Dana Colson ( www.allsmiles.ca ) updates us on the latest minimally invasive technologies in her practice so we get our best smile Family physician Dr. Vivien Brown of Medisys Health Group ( www.medisys.ca ) explains preventative health care assessments , Senior Wealth Manager Darren Farwell of Scotia McLeod (...
Topics: wellness, osteoporosis, dentistry, pinhole surgery, finance, hair loss
1,106
1.1K
Jul 12, 2010
07/10
by
Loewenthal, S. H.; Anderson, N. E.; Rohn, D. A
texts
eye 1,106
favorite 0
comment 0
Traction drives are traced from early uses as main transmissions in automobiles at the turn of the century to modern, high-powered traction drives capable of transmitting hundreds of horsepower. Recent advances in technology are described which enable today's traction drive to be a serious candidate for off-highway vehicles and helicopter applications. Improvements in materials, traction fluids, design techniques, power loss and life prediction methods will be highlighted. Performance...
Topics: CORONAGRAPHS, FOCAL PLANE DEVICES, HIGH RESOLUTION, IMAGE RECONSTRUCTION, SOLAR CORONA, SOLAR WIND,...
0
0.0
Jan 20, 2021
01/21
by
Todd Schlemmer (schlem)
data
eye 0
favorite 0
comment 0
[Zero Image](www.zeroimage.com), in Hong Kong, makes lovely hardwood pinhole cameras, and they have sold many thousands to photographers around the world. Their classic 6x6 pinhole camera, the "2000", is their most popular model and, like all Zero Image offerings, is available with all kinds of options and customization. These cameras are sturdy, reliable, and expensive. The hardware is all made from brass, presumably somewhere in the Hong Kong area. Zero Image are very much about the...
Topics: zeroimage2000, camera_obscura, schlem, Camera, camera, stl, thingiverse, zero image 2000, zero...
0
0.0
Jan 15, 2021
01/21
by
Garrett Durland (CaptObvious)
data
eye 0
favorite 0
comment 0
The August 21, 2017 eclipse will be observable across America. While those in the path of totality will see a TOTAL solar eclipse, everyone will be treated to a PARTIAL eclipse! Where will you be? Why not celebrate the eclipse by making your own 3D Printed Pinhole Projector in the shape of the USA and/or of each US State? See all of [NASA's 3D Printable Pinhole Projectors](https://eclipse2017.nasa.gov/3d-printable-pinhole-projectors). Ask a friend to take a picture of your shadow while holding...
Topics: thingiverse, Eclipse, stl, solar_eclipse, pinhole, Colorado, viewer, Physics & Astronomy, Denver
1
1.0
Jan 7, 2021
01/21
by
Jørgen Kløvstad (Velvia)
data
eye 1
favorite 0
comment 0
I included step files so that it may be remixed easily. Please share it and let's evolve it. Made a pinhole cone for my 4x5 camera frame. Parts you need: M3 nuts, washers and bolts in varying lengths 2x M4 nuts and bolts for attaching grip 1/4" to 3/8" screw adapter for tripod mount I remixed the grip from Dora Goodman's ZONE camera, so that it is flush with the camera. I recommend putting the grip on the side with the film holder opening. This camera can be used with either graflock...
Topics: 3D Printing, 4x5_camera, photography, stl, pinhole, 4x5, film, thingiverse, pinhole_camera
76
76
Dec 9, 2007
12/07
by
Tim Pearce
image
eye 76
favorite 0
comment 0
A pair of images in my gallery exhibit in Hyderabad, India.
Topics: hyderabad, india, pinhole, pin-hole, photography
0
0.0
Jan 17, 2021
01/21
by
Todd Schlemmer (schlem)
data
eye 0
favorite 0
comment 0
The **terraPin ACE, Lulzbot Edition**, pinhole camera is the culmination of years of my 3D printing and camera design work. I love my [Lulzbot](https://www.lulzbot.com/) Taz4, and the ACE prints beautifully on it. This compact design will even print on the smaller Lulzbot Mini. The ACE uses [120 film](https://en.wikipedia.org/wiki/120_film), and shoots sixteen 6X4.5 exposures per roll of film. It is the little brother to the [terraPin ACME](https://www.thingiverse.com/thing:1724928) and snaps...
Topics: lochkamera, Lulz, analog_camera, Camera, tazmini, libre, taz_6, stl, schlab, 120_film, photography,...
117
117
Apr 12, 2013
04/13
by
ilai rämä
audio
eye 117
favorite 1
comment 0
i found this from my old hard drive. this piece is made by turning pinhole and kirlian photographs into sound files and trying to treat them harmonically. i believe the software was called hyperupic. since i`m not a big fan of full scale digital noise i drove separate tracks into a wall of stacked amplifiers. mainly guitar amps if i remember correctly. miked the amps and the room and mixed it back together. that was the wall of distraction.
Topics: ambient, noise, pink noise, pinhole photography, kirlian photography, hyperupic, finland, finnish,...
68
68
Jan 31, 2020
01/20
by
Krummel, Brian J
texts
eye 68
favorite 5
comment 1
210 pages : 26 cm
favoritefavoritefavoritefavoritefavorite ( 1 reviews )
Topics: Photography, Pinhole -- Handbooks, manuals, etc, Photography, Artistic -- Handbooks, manuals, etc,...
4
4.0
Jan 13, 2021
01/21
by
Troy Cline (TroyDCline)
data
eye 4
favorite 0
comment 0
The August 21, 2017 eclipse will be observable across America. While those in the path of totality will see a TOTAL solar eclipse, everyone will be treated to a PARTIAL eclipse! Where will you be? Why not celebrate the eclipse by making your own 3D Printed Pinhole Projector in the shape of the USA and/or of each US State? To see all of NASA's 3D Printable Pinhole Projectors , visit https://eclipse2017.nasa.gov/3d-printable-pinhole-projectors Ask a friend to take a picture of your shadow while...
Topics: West Virginia State, eclispe, thingiverse, state, west_virginia, stl, NASA, elcilpse2017, Physics...
1
1.0
Jan 8, 2021
01/21
by
Cad Mium (Cadm1um)
data
eye 1
favorite 0
comment 0
Inspired by this [video](https://www.youtube.com/watch?v=wtZOWEB_wcI), I created mounting brackets for a simple pinhole camera. Instructions for making the camera can be found in the [video](https://www.youtube.com/watch?v=wtZOWEB_wcI).
Topics: pinhole, stl, Camera, thingiverse, solarography, camera, pinhole_camera
An instrument for obtaining quantitative, three-dimensional and tomographic information relating to X-ray and gamma-ray emitting objects and for the orthoscopic viewing of such objects includes a multiple-pinhole aperture plate held spaced from an X-ray or gamma-ray to visible-light converter which is coupled to a visible-light image intensifier. The spacing between the aperture plate and the converter is chosen such that the mini-images of an emitting object formed by the pinholes do not...
Topics: NASA Technical Reports Server (NTRS), GAMMA RAYS, IMAGING TECHNIQUES, PINHOLE CAMERAS, TOMOGRAPHY,...
0
0.0
Jan 15, 2021
01/21
by
Ct Hill (hillct)
data
eye 0
favorite 0
comment 0
UPDATE: V2 has better offsets, better reinforcements and faster print time (less material). Print on back, with vertical prongs laying on print bed, with supports. NASA has published a nice set of state-shaped pinhole cameras meant to be 3D printed https://eclipse2017.nasa.gov/3d-stl-files unfortunately the meshes aren't all well formed so I recommend you preprocess the meshes through MeshLab http://www.meshlab.net/ The other deficiency which I'm attempting to address here is lack of mounting...
Topics: thingiverse, Eclipse, stl, pinhole_camera, solar_eclipse, mount, Physics & Astronomy,...
0
0.0
Jan 15, 2021
01/21
by
Bryan Jensen (Filbert168)
data
eye 0
favorite 0
comment 0
Print without support at at lease a .16mm resolution to capture slits for paper. 4x both leg parts 2x support legs 1 each of the holders 1 base 2 sheets of 8.5 x 11 paper
Topics: solar, thingiverse, Sport & Outdoors, Eclipse, stl, pinhole_camera, solar_eclipse, pinhole,...
13
13
Jul 6, 2014
07/14
by
Indie Nation
audio
eye 13
favorite 0
comment 0
Stupid as Charged Episode 005 – Bad Weed Toss, Luggage and Posting
Topics: Bangkok, British Columbia, crime, dumb criminals, FaceBook, hostage, Killer Kona Buds, luggage,...
Bell System Technical Journal, 47: 2. February 1968 pp 269-271. B.S.T.J. Briefs: Air-Insulated Beam-Lead Crossovers for Integrated Circuits. (Lepselter, M.P.)
Topics: crossovers, integrated, crossover, circuit, thermal, lead, beam, dielectric, pinholes, pinhole,...
R&D Report 1968-41 : Spatial filtering applied to film printing: Some fundamental considerations A.H. Jones Some of the fundamental properties of imaging systems using coherent illumination are discussed, and the basic technique of spatial filtering is described. A means whereby the technique might be extended to allow some compensation to be made for colour film printing losses is then proposed. Certain important fundamental and practical difficulties are incurred in such an arrangement,...
Topics: spatial, image, fourier, amplitude, transparency, distribution, filtering, plane, filter, pinhole,...
22
22
Dec 17, 2019
12/19
by
Quinnell, Justin
texts
eye 22
favorite 1
comment 0
96 p. : 25 cm +
Topics: Photography, Pinhole, Cameras -- Design and construction, Paper work
171
171
movies
eye 171
favorite 0
comment 0
Biografía de Liliana Cabrera, poeta, escritora, fotógrafa y docente de Yo No Fui
Topics: Liliana Cabrar, Yo no fui, yonofui, carcel, estenopeice, fotografía, pinhole, eter
1
1.0
Jan 16, 2021
01/21
by
Thomas Ravens (thomasrvs)
data
eye 1
favorite 0
comment 0
it fits on an viewer with 58mm in diameter LOOK AT THE SUN AT YOUR OWN RISK!!!!!!
Topics: sun_viewer, pinhole_viewer, Physics & Astronomy, thingiverse, pinhole, astronomy_telescope,...
The CASES (Controls, Astrophysics, and Structures Experiment in Space) program consists of a flight demonstration of CSI (Controls-Structures Interactions) technology on the Space Shuttle. The basis structure consists of a 32 m deployable boom with actuators and sensors distributed along its length. Upon deployment from the Orbiter bay, the CASES structure will be characterized dynamically and its deformations controlled by a series of experimental control laws; and cold gas thrusters at its...
Topics: NASA Technical Reports Server (NTRS), ASTROPHYSICS, PINHOLE OCCULTER FACILITY, SPACEBORNE...
1
1.0
Jan 19, 2021
01/21
by
Connor H (gevoo)
data
eye 1
favorite 0
comment 0
V 1.5 Update The new version supports the use of 8-32 hardware to retain the top lid. This removes a large breaking point of the camera. The tripod mount nut is now installed from the inside of the camera and the hole can be sealed with masking tape before painting (I recommend applying a coat of a nonreflective black paint to the inside of the camera.) If you seek a more solid seal a 1/4 20 cap nut could be installed (also before painting) If you have any questions I will do my best to answer...
Topics: fusion_360, pinhole_camera, Camera, camera, 6x12, thingiverse, diy_camera, lens, medium_format,...
For several years, the Marshall Space Flight Center has pursued the coordinated development of a Large Space Structures (LSS) National Test Bed for the investigation of numerous technical issues involved in the use of LSS in space. The origins of this development, the current status of the various test facilities and the plans laid down for the next five years' activities are described. Particular emphasis on the control and structural interaction issues has been paid so far; however,...
Topics: NASA Technical Reports Server (NTRS), COST EFFECTIVENESS, DYNAMIC TESTS, LARGE SPACE STRUCTURES,...
0
0.0
Jan 16, 2021
01/21
by
retro fluffyboy (retrofluffyboy)
data
eye 0
favorite 0
comment 0
This is the long awaited 6x6 120 version of my tiny pinhole camera. The assembly instructions are exactly the same as the tiny pinhole camera https://www.thingiverse.com/thing:2498620 except for the added film number viewer at the back. This film viewer is just a simple blade with a knob that slides up and down in the groove at the back of the camera, simply glue the knob onto the blade and you're good to go. I took some test shots on a roll of Fomapan 400, which i developed in ID68, then...
Topics: pinhole_camera, 120 camera, Camera, camera, stl, thingiverse, pinhole, film camera, 120 pinhole
A prototype small, lightweight micro Sun sensor (MSS) has been flight qualified as part of the attitude-determination system of a spacecraft or for Mars surface operations. The MSS has previously been reported at a very early stage of development in NASA Tech Briefs, Vol. 28, No. 1 (January 2004). An MSS is essentially a miniature multiple-pinhole electronic camera combined with digital processing electronics that functions analogously to a sundial. A micromachined mask containing a number of...
Topics: NASA Technical Reports Server (NTRS), FIELD-PROGRAMMABLE GATE ARRAYS, ATTITUDE CONTROL, MARS...
0
0.0
Jan 7, 2021
01/21
by
Piotr Ksi (Xana2048)
data
eye 0
favorite 0
comment 0
it's work.
Topics: Camera, pinhole_camera, stl, thingiverse
The pinhole occulter system, a space shuttle based experiment for the production of hard X-ray images taken primarily from the Sun is described. The system is a pinhole camera utilizing a deployable 50 m flexible boom for separating the pinhole from the recording devices located in the shuttle. The system is subjected to the disturbances of the shuttle. The worst of these are thruster firing for orbit correction, man motion, motion induced by other systems, and gravity gradient torques. The...
Topics: NASA Technical Reports Server (NTRS), PINHOLE CAMERAS, POINTING CONTROL SYSTEMS, SOLAR RADIATION,...
R132 Mod II Holographic System - Gaertner Optical Instrumentation 1971
Topics: gaertner, mod, holographic, optical, holography, scientific, spatial, system, pinhole, wrightwood,...
0
0.0
Jan 15, 2021
01/21
by
Félix García (STIG_)
data
eye 0
favorite 0
comment 0
Thanks to NASA for making these! Now i can use this since all the glasses are sold out locally. https://eclipse2017.nasa.gov/3d-stl-files **Just sharing FWD from NASA. Im not the author.
Topics: thingiverse, Eclipse 2017, stl, pinhole viewer, pinhole, Physics & Astronomy, eclipse, ohio,...
0
0.0
Jan 18, 2021
01/21
by
Jacob Jaeggli (jakebot)
data
eye 0
favorite 0
comment 0
This is a remix of the [Terrapin Bijou Sidewinder 6x4.5 Pinhole Camera](https://www.thingiverse.com/thing:1167655) shown here with the [Incher](https://www.thingiverse.com/thing:886492) pinhole lens. Primarily, I performed small modifications to the body to remove branding and allow for customization using fabric, adhesive film, or other materials for the body. Small modifications have been performed to the dimensions to print more easily (reductions of overhangs and difficult to print areas,...
Topics: pinhole_camera, photography, Camera, camera, 120_film, thingiverse, pinhole, stl
The outer solar atmosphere exhibits a great variety of dynamic and energetic plasma phenomena, from the catastrophic energy release of solar flares to the steady acceleration of the solar wind. The Pinhole/Occulter Facility contains the instruments necessary for broadband X-ray imaging, combined with simultaneous ultraviolet and white light spectroscopy and imaging.
Topics: NASA Technical Reports Server (NTRS), PINHOLE OCCULTER FACILITY, SOLAR ACTIVITY, SOLAR CORONA,...
The important role played by hard X-ray radiation as a diagnostic of impulsive phase energy transport mechanism is reviewed. It is argued that the sub-arc second resolution offered by an instrument such as the Pinhole/Occulter Facility (P/OF) can greatly increase our understanding of such mechanisms.
Topics: NASA Technical Reports Server (NTRS), IMPULSES, SOLAR FLARES, SOLAR X-RAYS, SPATIAL RESOLUTION,...
18
18
audio
eye 18
favorite 0
comment 0
The future is pin hole
Topics: pinhole, zero image, film, photography
1
1.0
Jan 19, 2021
01/21
by
Богдан Стафейчук (Staf27)
data
eye 1
favorite 0
comment 0
##Pinhole adapter for D(SLR) Camera. The idea of creating a simple, cheap, lightweight and user-friendly camera has been in my head for a long time. It is my third version of a [camera](https://translate.google.com/translate?hl=en&sl=uk&tl=en&u=http%3A%2F%2Fstaf.org.ua%2Fpinhole-3.0%2F "camera"). *** ####Specifications * __120mm.__ min focus distance. * Screen(Frame) 2:3(__100x150mm__). * Minimum focal length of the pinhole camera: __30mm__ * This overlays the...
Topics: pinhole_camera, Camera, camera, stl, thingiverse, pinhole, pinhole_adapter, obscura, camera_obscura
0
0.0
Jan 15, 2021
01/21
by
Chris Behling (chrisbehling)
data
eye 0
favorite 0
comment 0
The 2017 Solar Eclipse is almost upon us! If you're like me, you waited until the last minute to prepare and now a 3 pack of viewing glasses is $100 on amazon... Fear not! Use your printer to make a pinhole viewer. All you need is the following: 1. Run to Staples and buy a 3"x36" mailing tube (about $3) 2. Adequate time to print this model (took me about 8 hours)
Topics: thingiverse, Eclipse, stl, solar_eclipse, pinhole, Physics & Astronomy, pinhole_projector
0
0.0
Jan 15, 2021
01/21
by
Garrett Durland (CaptObvious)
data
eye 0
favorite 0
comment 0
The August 21, 2017 eclipse will be observable across America. While those in the path of totality will see a TOTAL solar eclipse, everyone will be treated to a PARTIAL eclipse! Where will you be? Why not celebrate the eclipse by making your own 3D Printed Pinhole Projector in the shape of the USA and/or of each US State? See all of [NASA's 3D Printable Pinhole Projectors](https://eclipse2017.nasa.gov/3d-printable-pinhole-projectors). Ask a friend to take a picture of your shadow while holding...
Topics: oregon, thingiverse, stl, solar_eclipse, pinhole, Physics & Astronomy, eclipse, eclipse2017,...
1
1.0
Jan 19, 2021
01/21
by
Edgar Kech (ekech)
data
eye 1
favorite 0
comment 0
Update 2018-05-16: First mockup prints for testing the removable insert and the winder/clutch/knobs. Viewfinder added and modified body cover for it. Update 2018-05-02: Caution, the initially provided knobs do not fit - I replaced them with a new version with now hopefully fitting measurements. Tripod Plate added. Redesign of my 6x12 pinhole camera with curved film plane based on first real world tests. This redesign is currently untested but I am quite confident that it will work without...
Topics: pinhole_camera, medium_format_camera, Camera, camera, 6x12, medium_format, thingiverse, stl
0
0.0
Jan 15, 2021
01/21
by
Garrett Durland (CaptObvious)
data
eye 0
favorite 0
comment 0
Two versions of eclipse pinhole viewers: One version with a star centered on Nashville, another with a star centered on Spring City. The August 21, 2017 eclipse will be observable across America. While those in the path of totality will see a TOTAL solar eclipse, everyone will be treated to a PARTIAL eclipse! Where will you be? Why not celebrate the eclipse by making your own 3D Printed Pinhole Projector in the shape of the USA and/or of each US State? See all of [NASA's 3D Printable Pinhole...
Topics: volunteers, thingiverse, Eclipse, stl, solar_eclipse, pinhole, viewer, tennessee, Physics &...
Viewgraphs and charts from a briefing summarize the accomplishments, results, conclusions, and recommendations of a feasibility study using the Pinhole Occulter Facility (POF). Accomplishments for 1986 include: (1) improved IPS Gimbal Model; (2) improved Crew Motion Disturbance Model; (3) use of existing shuttle on-orbit simulation to study the effects of orbiter attitude deadband size on POF performance; (4) increased understanding of maximum performance expected from current actuator/sensor...
Topics: NASA Technical Reports Server (NTRS), APPLICATIONS PROGRAMS (COMPUTERS), BOOMS (EQUIPMENT),...
The X-ray generator for the AXAF VETA-I mirror test is an electron impact X-ray source with various anode materials. The source sizes of different anodes and their intensity distributions were measured with a pinhole camera before the VETA-I test. The pinhole camera consists of a 30 micrometers diameter pinhole for imaging the source and a Microchannel Plate Imaging Detector with 25 micrometers FWHM spatial resolution for detecting and recording the image. The camera has a magnification factor...
Topics: NASA Technical Reports Server (NTRS), IMAGING TECHNIQUES, MICROCHANNEL PLATES, PINHOLE CAMERAS,...
0
0.0
Jan 21, 2021
01/21
by
delphinus 555 (Deln555)
data
eye 0
favorite 0
comment 0
PIN HOLE GLASSES ! might have VISUAL ACUITY effect. (no guarantee. please use at your own risk.) At least, I can read many small letters at some distance with this. Hole-size : 1.3 mm Holes-distance : 6 mm One-size-fits-all. (Probably) No-support, Easy Print. My Printing SETTING : ・0.2 mm layers ・1-line Brim ・No retraction ・5 mm wipe
Topics: glasses, no_support, thingiverse, pinhole, fidget_spinner, easy_print, sunglasses, Glasses, stl
Atomic oxygen erosion and silicone contamination are serious issues that could damage or destroy spacecraft components after orbiting for an extended period of time, such as on a space station or satellite. An experiment, the Polymer Erosion And Contamination Experiment (PEACE) will be conducted to study the effects of atomic oxygen (AO) erosion and silicone contamination, and it will provide information and contribute to a solution for these problems. PEACE will fly 43 different polymer...
Topics: NASA Technical Reports Server (NTRS), SILICONES, OXYGEN ATOMS, CONTAMINATION, CUMULATIVE DAMAGE,...
Three optical sight sensor systems were designed, built and tested. Two optical lines of sight sensor system are capable of measuring the absolute pointing angle to the sun. The system is for use with the Pinhole/Occulter Facility (P/OF), a solar hard x ray experiment to be flown from Space Shuttle or Space Station. The sensor consists of a pinhole camera with two pairs of perpendicularly mounted linear photodiode arrays to detect the intensity distribution of the solar image produced by the...
Topics: NASA Technical Reports Server (NTRS), IMAGE PROCESSING, LINEAR ARRAYS, PHOTODIODES, PINHOLE...
Solar electron phenomena which can produce low levels of hard X-ray emission at the Sun are reviewed. Small approx. 2 to 100 keV solar electrons events, the most common type of impulsive solar particle emission, appear to originate in flare-like bursts high in the corona. These events often are accompanied by approx. 1 MeV/nucleon to the 3rd power He-rich particle events in which lower energy ions are apparently accelerated as well. Long-lived (many days) streams associated with large flares or...
Topics: NASA Technical Reports Server (NTRS), CHARGED PARTICLES, INTERPLANETARY MEDIUM, SOLAR CORONA, SOLAR...
Images produced by pinhole cameras using film sensitive to atomic oxygen provide information on the ratio of spacecraft orbital velocity to the most probable thermal speed of oxygen atoms, provided the spacecraft orientation is maintained stable relative to the orbital direction. Alternatively, as it is described, information on the spacecraft attitude relative to the orbital velocity can be obtained, provided that corrections are properly made for thermal spreading and a co-rotating...
Topics: NASA Technical Reports Server (NTRS), ATTITUDE INDICATORS, LONG DURATION EXPOSURE FACILITY, OXYGEN...
