Redigerer Donald Machholz

{{Infoboks biografi}}
[[File:Dm img.jpg|thumb|Donald Machholz]]
[[File:Cometdiscovery.jpg|thumb|]]
'''Donald Edward Machholz''' (født 7. oktober 1952 i [[Portsmouth (Virginia)|Portsmouth]] i [[Virginia]] i [[USA]], død 9. august 2022 i [[Wikieup]] i [[Mohave County (Arizona)|Mohave County]] i [[Arizona]]) var en amerikansk [[amatørastronom]].

== Biografi ==
Han var førende i sin innsats for å oppdage [[komet]]er ved hjelp av ulike typer kikkerter, herunder noen han konstruerte selv. Han skal ha bidratt til å identifisere tolv [[komet]]er. Gjennom 50 år brukte Machholz mer enn 9000 timer på kometjakt.<ref>{{Cite web|url=http://auburnjournal.com/detail/145919.html|title=Patience leads to new comet discovery by Colfax amateur astronomer|author=Gus Thomson|date=30. mars 2010|accessdate=30. mars 2010|publisher=Auburn Journal}}</ref><ref>{{Cite web|url=http://www.skyandtelescope.com/resources/proamcollab/astroalert/89322402.html|title=New Comet Machholz|publisher=[[Sky & Telescope]]|author=Roger W. Sinnott|date=27. mars 2010|accessdate=30. mars 2010|archive-date=2010-03-30|archive-url=https://web.archive.org/web/20100330065143/http://www.skyandtelescope.com/resources/proamcollab/astroalert/89322402.html|url-status=yes}}</ref> 

Machholz var en av initiativtagerne til [[Messier Marathon]], en konkurranse som går ut på å påvise samtlige objekter i [[Messierkatalogen]] i løpet av én natt.

Machholz døde den 9. august 2022 på sin ranch i Mohave County i Arizona i en alder av 69 år,<ref>{{Kilde www|url=https://ground.news/article/earthsky-don-machholz-1952-2022|tittel=EarthSky {{!}} Don Machholz, 1952-2022|besøksdato=2022-08-12|dato=2022-08-09|språk=en|verk=Ground News}}</ref> avkomplikasjoner forårsaket av [[covid-19]].<ref>{{cite news|url = https://universemagazine.com/en/famous-amateur-astronomer-donald-machholz-died/|title = Famous amateur astronomer Donald Machholz died|work = The Universe Space Tech|date = 8. august 2022|accessdate = 27. august 2022}}</ref><ref>{{cite news|url = https://earthsky.org/human-world/don-machholz-1952-2022/|title = Don Machholz, 1952–2022|work = EarthSky.org|date = 9. august 2022|accessdate = 11. august 2022}}</ref><ref name=astro>{{cite web
| url = https://astronomy.com/news/2022/08/donald-machholz-prolific-comet-hunter-dies-at-age-69
| title = Donald Machholz, comet hunter and co-inventor of Messier marathon, dies at age 69
| work = Astronomy
| date = 10. august 2022
| access-date = 15. august 2022
| last1 = Parks
| first1 = Jake
| archive-url = https://web.archive.org/web/20220812004459/https://astronomy.com/news/2022/08/donald-machholz-prolific-comet-hunter-dies-at-age-69
| archive-date = 12. august 2022
| url-status = live}}</ref>

==Oppdagede kometer==
* 1978: Comet Machholz (1978l)
* 1985: Comet Machholz (1985e)
* 1986: Comet [[96P/Machholz]]
* 1988: Comet Machholz (1988j)
* 1992: Comet Tanaka-Machholz (1992d)
* 1992: Comet Machholz (1992k)
* 1994: Comet Nakamura-Nishimura-Machholz (1994m)
* 1994: Comet [[List of numbered comets#141P/Machholz|141P/Machholz 2]]
* 1994: Comet Machholz 1994r
* 2004: [[Comet Machholz]] (C/2004 Q2)
* 2010: Comet Machholz C/2010 F4
* 2018: [[C/2018 V1]] (Machholz-Fujikawa-Iwamoto)

== Bøker ==
* ''The Observing Guide to the Messier Marathon: A Handbook and Atlas'' 
* ''Decade of Comets: A Study of the 33 Comets Discovered by Amateur Astronomers Between 1975 and 1984''
* ''An observer's guide to comet Hale-Bopp: Making the most of Comet Hale-Bopp: when and where to observe [[Comet Hale-Bopp]] and what to look for''

== Omtaler ==
* Associated Press (June 16, 1985) [https://www.latimes.com/archives/la-xpm-1985-06-16-mn-2695-story.html "Amateur Astronomer Nails Down His Second Comet"] [[Los Angeles Times]] Retrieved December 29, 2016
* Jet Propulsion Laboratory (October 14, 1994) [https://www2.jpl.nasa.gov/sl9/news42.html "MACHHOLZ'S BANNER YEAR"] [[Jet Propulsion Laboratory]]
* Library of Congress (2002) [http://id.loc.gov/authorities/names/n2002012546.html "Machholz, Don 1952–"] [[Library of Congress]]
* Joe Rao (September 17, 2004) [https://www.space.com/340-newfound-comet-set-winter-display.html "Newfound Comet Set for Winter Display"] [[Space.com]]
* Debi Drake (May 22, 2005) [https://americanprofile.com/articles/man-takes-comet-hunting-new-heights/ "Meet The Comet Hunter: Don Machholz"] American Profile [[AMG/Parade]]
* Alan MacRobert (December 2, 2008) [https://www.skyandtelescope.com/astronomy-news/a-very-oddball-comet/ "A Very Oddball Comet"] [[Sky & Telescope]] Retrieved December 2, 2008
* Jeanna Bryner (December 2, 2008) [https://www.space.com/6184-odd-comet-possibly-star-system.html "Odd Comet Possibly from Another Star System"] [[Space.com]]
* Roger W. Sinnott (March 27, 2010) [https://www.skyandtelescope.com/astronomy-news/new-comet-machholz/ "New Comet Machholz"] [[Sky & Telescope]] Retrieved March 30, 2010.
* Brooks Hays (November 3, 2017) [https://www.upi.com/Science_News/2017/11/03/SOHO-spacecraft-spots-comet-96P-a-return-visitor/7691509724759/ "SOHO Spacecraft Spots Comet Machholz 96P, A Return Visitor"] [[UPI]]
* [[Gareth V. Williams]] (November 11, 2018) [https://www.minorplanetcenter.net/mpec/K18/K18VF1.html "MPEC 2018-V151: COMET C/2018 V1 (Machholz-Fujikawa-Iwamoto)"] [[Minor Planet Center]].
* Bob King (November 9, 2018) [https://www.skyandtelescope.com/astronomy-news/observing-news/machholz-12th-comet/ "Amateur Don Machholz Discovers His 12th Comet!"] [[Sky & Telescope]]
* [https://www.minorplanetcenter.net/mpec/K18/K18VF1.html MPEC 2018-V151: COMET C/2018 V1 (Machholz-Fujikawa-Iwamoto)]
* Bob King (November 11, 2018) [http://astrobob.areavoices.com/2018/11/11/amateur-don-machholz-discovers-new-dawn-comet-heres-how-to-find-it Arizona Amateur Discovers New Dawn Comet — Here’s How To Find It] {{Wayback|url=http://astrobob.areavoices.com/2018/11/11/amateur-don-machholz-discovers-new-dawn-comet-heres-how-to-find-it |date=20181113222253 }}
* [https://theskylive.com/c2018v1-info Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) Sky Charts and Coordinates] {{Wayback|url=https://theskylive.com/c2018v1-info |date=20181115153521 }}
* [https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=C/2018%20V1;old=0;orb=1;cov=0;log=0;cad=0#orb JPL viewer] [[NASA]]

==Referanser==
<references />

==Eksterne lenker==
* [http://donmachholz.com/ Don Machholz]

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{{STANDARDSORTERING:Machholz, Donald}}
[[Kategori:Astronomer fra USA]]
[[Kategori:Oppdagere av kometer]]
[[Kategori:Amatørastronomer]]
[[Kategori:Personer fra Portsmouth i Virginia]]
[[Kategori:Dødsfall relatert til covid-19 i USA]]