Some people even focus on amateur telescope making as their primary interest within the hobby of amateur astronomy.

Some systems, such as amateur wrestling, submission wrestling, judo, sumo, and Brazilian jiu-jitsu are exclusively grappling arts and do not allow striking.

Some Eastern European athletes have been successful enough to be scouted into professional sumo in Japan, much like their Japanese amateur counterparts.

Some professional equipment is very large and too heavy to be hand held whilst some amateur cameras were designed to be very small and light for single-handed operation.

Some amateur telescope makers use a similar test called a Ronchi test that replaces the knife edge with a grating comprising several fine parallel wires or an etching on a glass plate.

Some amateur telescope makers build instruments that, while looking crude, are wholly suited to the purpose they are designed for.

Some of the transmissions Komarov made were recorded by amateur radio operators like Sven Grahn.

Some miniaturized electronics, particularly graphing calculators and hand-held amateur and two-way radio equipment, have serial ports using a jack plug connector, usually the smaller 2. 5 or 3. 5 mm connectors and use the most basic 3-wire interface.

Some scenes were also filmed in Bradford, notably with Joe travelling on a bus and spotting Susan in a lingerie shop and the outside of the amateur dramatics theatre.

Some of the local amateur groups are listed below.

Beecham's presentation of A Mass of Life at the Queen's Hall in June 1909 did not inspire Hans Haym, who had come from Elberfeld for the concert, though Beecham says that many professional and amateur musicians thought it " the most impressive and original achievement of its genre written in the last fifty years " Some reviewers, nevertheless, doubted the popular appeal of Delius's music, while others were more specifically hostile.

Some fans, generally those with some Japanese language experience, began producing amateur subtitled copies of new anime programs so that they could share them with their fellow fans who did not understand Japanese.

Some modes of communication, such as continuous wave morse code transmissions ( especially by amateur radio operators ) and single sideband voice transmissions are more common in the HF range than on other frequencies, because of their bandwidth-conserving nature, but broadband modes, such as TV transmissions, are generally prohibited by HF's relatively small chunk of electromagnetic spectrum space.

Some BPL providers have installed " notch filters " to block out certain portions of the spectrum ( namely the amateur radio bands ), but a great amount of controversy over the deployment of this access method remains.

Some episodes of Ghost Hunters and other paranormal programs show the team members using the camera to create false positive readings that amateur ghost hunters mistake for ghostly activity.

Some amateur television repeaters also use this mode in the amateur band.

* Some amateur propellants use potassium nitrate, combined with sugar, epoxy, or other fuels / binder compounds.

Some amateur rodeos also have breakaway roping as part of their event line-up.

Some units ( especially amateur HTs ) also include DTMF keypads for remote operation of various devices such as repeaters.

Some amateur astronomers use their telescopes the same way, but direct optical viewing with eyepieces is still very common.

Some amateur baseball organizations enforce bat manufacturing and testing standards which attempt to limit maximum ball speed for wood and non-wood bats.

Some of the same providers conducting those trials later began commercial roll-outs in limited neighborhoods in selected cities, with some level of user acceptance but also many documented cases of interference reported to the FCC by amateur radio users.

Some astronomers endeavoured to explain this by parallax, but these attempts were futile, for the motion was at variance with that which parallax would produce.

Some astronomers had suggested that the impacts might have a noticeable effect on the Io torus, a torus of high-energy particles connecting Jupiter with the highly volcanic moon Io.

Some notable observed features of galaxy structure ( including our own Milky Way ) that astronomers wish to explain with galactic formation theories include ( but are certainly not limited to ) the following:

Some astronomers prefer to refer to Sedna and 2000 CR < sub > 105 </ sub > as belonging to the " extended scattered disc " rather than to the inner Oort cloud.

Some astronomers believe the two types of star clusters form via the same basic mechanism, with the difference being that the conditions that allowed the formation of the very rich globular clusters containing hundreds of thousands of stars no longer prevail in the Milky Way.

Some astronomers expressed scepticism at the result.

Some astronomers explain this by presence of small temperature fluctuations within planetary nebulae ; others claim that the discrepancies are too large to be explained by temperature effects, and hypothesize the existence of cold knots containing very little hydrogen to explain the observations.

Some Greek astronomers considered them to be a distinct constellation, and they are mentioned by Hesiod, and in Homer's Iliad and Odyssey.

Some Greek astronomers ( e. g., Aristarchus of Samos ) speculated that the planets ( Earth included ) orbited the Sun, but the optics ( and the specific mathematics – Newton's Law of Gravitation for example ) necessary to provide data that would convincingly support the heliocentric model did not exist in Ptolemy's time and would not come around for over fifteen hundred years after his death.

Some of the other astronomers involved in the project include Wei-Chun Jao, John Subasavage and Thom Beaulieu of Georgia State University, Phil Ianna of the University of Virginia in Charlottesville, Hartmut Jahreiß of the Astronomisches Rechen-Institut in Heidelberg, Germany and Edgardo Costa and Rene Mendez of the Universidad de Chile.

Some astronomers use the term QSO ( Quasi-Stellar Object ) for this class of AGN, reserving ' quasar ' for radio-loud objects, while others talk about radio-quiet and radio-loud quasars.

Some astronomers put this down to the presence of small temperature fluctuations within H II regions ; others claim that the discrepancies are too large to be explained by temperature effects, and hypothesise the existence of cold knots containing very little hydrogen to explain the observations.

Some astronomers have estimated that there may be twice as many Jupiter-sized rogue planets as there are stars.

Some astronomers conjecture that its large mass may be related to its location near the Galactic Center, since the star formation process there may favor massive objects.

Some astronomers therefore suspect that it was once a comet.

Some of these extrasolar planets are large and resemble Yavin, although astronomers cannot yet tell whether any Earth type planetary moons exist around such extrasolar planets.

Some astronomers believe that ring galaxies are formed when a smaller galaxy passes through the center of a larger galaxy.

Some astronomers, however, prefer to specify the resulting magnification power rather than the focal length.

Some astronomers now agree that Dr. Stuart may indeed have photographed an asteroid impact on the Moon.

Some elements of Indian astronomy reached China with the expansion of Buddhism after the Eastern Han Dynasty ( 25 – 220 AD ), but the most detailed incorporation of Indian astronomical thought occurred during the Tang Dynasty ( 618-907 ), when numerous Indian astronomers took up residence in the Chinese capital, and Chinese scholars, such as the great Tantric Buddhist monk and mathematician Yi Xing, mastered its system.

Some astronomers have argued that Thule's present orbit is the natural result of the force of Jupiter on a body orbiting at precisely the distance from the Sun Thule does, in the same way ( though with the reverse effect ) as the Kirkwood gaps in the more inner parts of the asteroid belt.

Some astronomers suggested that perhaps they were all one comet, whose orbital period was somehow being drastically shortened at each perihelion passage, perhaps by retardation by some dense material surrounding the Sun.

Some sidewalk " pitch men " charged the public to view astronomical objects through their telescope but other astronomers allow people to view for free.