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The Astronomy DSO list specifies which Deep Sky Objects may be covered in the Astronomy event that year.

2012 DSOs

Previous Years' DSO Lists

<spoiler text="2011 DSOs">

2011 DSO's
Name Images Constellation Magnitude Distance Coordinates External Links
Epsilon Aurigae Epsilon aurigae.jpg Epsilon Auriga.jpg Auriga Apparent: 2.9 normally, 3.8 during eclipse; Absolute: -6.0 ~2000 light years (ly) Right Ascension: 05h 01m 58.1s; Declination: +43° 49’ 24” AAVSO: Epsilon Aurigae Citizen Sky: Epsilon Aurigae
Epsilon Aurigae is an eclipsing binary. One part is a white giant, and the other appears to be a star shrouded by a dark cloud of dust. In the middle of this cloud, there is a clearing where the star probably is, so during an eclipse, the system appears momentarily brighter as this clearing passes over the giant. An observation project of Epsilon Aurigae took place from 2009-2011.
NGC 6240 (IC 4625, UGC 10592, PGC 59186, VV 617) Ngc 6240.jpg Ngc 6240 xray inset.jpg Ophiuchus Apparent: 12.8 ~330 million ly Right Ascension: 16h 52m 58.9s; Declination: +02° 24’ 03” Chandra: NGC 6240 NASA APOD: NGC 6240
NGC 6240 is an extremely luminous infrared galaxy (ULIRG). It is the result of two smaller galaxies colliding to form one large galaxy with two nuclei and an irregular shape. Possible hypotheses for the high infrared emission are intense star formation or the presence of one or two AGNs.
3C 321 Chandra: 3C 321
Centaurus A (NGC 5128) SEDS: Centaurus A Centaurus A
Stephan's Quintet Chandra: Stephan's Quintet NASA APOD: Stephen's Quintet
MACSJ0717.5+3745 Chandra: MACSJ0717.5+3745
Bullet Cluster (1E 0657-56) Chandra: Bullet Cluster NASA APOD: Bullet Cluster
Perseus A (NGC 1275) NASA APOD: Perseus A Hubble Heritage: Perseus A
SN 2006gy Chandra: SN 2006gy NASA APOD: SN 2006gy
SN 1996cr Chandra: SN 1996cr
NGC 4603 NASA APOD: NGC 4603 HyperPhysics: NGC 4603
NGC 7771 NASA APOD: NGC 7771
NGC 2623 NASA APOD: NGC 2623 Hubble: NGC 2623
JKCS041 Chandra: JKCS041
Messier 77 (NGC 1068) Chandra: Messier 77 Universe Today: Messier 77
H2356-309 Chandra: H2356-309

Basic note sheet for the 2011 DSOs, intended for use when asked to quickly identify things, or for those new to the event. </spoiler> <spoiler text="2010 DSOs">

-**is part of a special viewing campaign this year and will be included up to at least 2011. </spoiler> <spoiler text="2009 DSOs">

-*is part of a special viewing campaign this year and will be included up to at least 2011. </spoiler>