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Urban Astronomy Club

Urban Astronomy Club. How to Observe and Manage a List of Observing Targets: The 6% Solution. Urban Astronomy Club. Making a List Doing a Monthly Sort Finding Out “What’s Up Tonight?” Understanding the Target Characteristics in Advance Star-Hopping to the 6% Solution Logging.

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Urban Astronomy Club

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  1. Urban Astronomy Club How to Observe and Manage a List of Observing Targets: The 6% Solution

  2. Urban Astronomy Club • Making a List • Doing a Monthly Sort • Finding Out “What’s Up Tonight?” • Understanding the Target Characteristics in Advance • Star-Hopping to the 6% Solution • Logging

  3. Making a List • From the Astronomical League Website: http://www.astroleague.org/al/obsclubs/urban/urban.html • From the S.E.D.S. Website: http://www.seds.org/messier/xtra/similar/urban.html • From the SkyTools Website: http://www.skyhound.com/skytools1_lists.html

  4. Doing a Monthly Sort http://www.astro.wisc.edu/~dolan/constellations/constellationmonth_list.html April Antlia Chamaeleon Crater Hydra Leo Leo Minor Sextans Ursa Major

  5. Comparing Sort to List http://www.astro.wisc.edu/~dolan/constellations/constellationmonth_list.html April Hydra Leo Ursa Major

  6. Finding Out “What’s Up Tonight?” • Check off every item in the printed list that matches the constellations monthly sort, OR • Run SkyTools

  7. April’s Targets: The 6% Solution • Ghost of Jupiter/Eye (Hydra) • M48 (Hydra) • Algieba (Leo) • M82 (Ursa Major) • Bode’s Nebula (Ursa Major) • Mizar (Ursa Major)

  8. Understanding the Target Characteristics In Advance Ghost of Jupiter/Eye Planetary Nebula aka NGC 3242, PN G261.0+32.0, PK 261+32.1, ESO 568-5 RA: 10h24m46.1s, Dec: -18°38'32" (2000) in Hydra Galactic lon: +261°03', Galactic lat: +32°03' Magnitude: 8.60 Size: 25" Catalog Data: Magnitude of central star: 13.3 Radial Velocity: 2 km/sec Expansion Vel: 23.0 km/sec Distance: 2800 ly Mean Surface Br. 15.3 Mag/arc-sec²

  9. Understanding the Target Characteristics in Advance Comments: Ring structure plus irregular disk with traces of ring structure. Fainter spherical envelope. Millennium Star Atlas Vol II Chart 851 Sky Atlas 2000 Chart 20 Uranometria 2000 Vol II Chart 325 Uranometria 2nd Ed. Chart 151 Herald-Bobroff Astroatlas B-06 C-57 Apparent Data for 2003 Apr 13 EDT at Columbia, Maryland: Apparent RA: 10h24m55.5s, Apparent Dec: -18°39'36" Ecliptical lon: +165°32', Ecliptical lat: -26°27' Azimuth: +180°00', Altitude: +32°08' Zenith Distance: +57°52' Local Sidereal Time: 02h44m Hour Angle: 00h00m Airmass: 1.9 Mean Extincted magnitude: 8.8

  10. Star-hopping As Easy as 1, 2, 3, 4, 5, 6, 7, 8, 9,…

  11. Starhopping: The “3” Steps • Naked-Eye View • Finder Scope View • Eyepiece Views

  12. Logging Observations Observing Log Entries for Algieba Date: 2003 March 24 20:57 Observer: Jerry Persall Location: Columbia, Maryland Instrument: Meade 5" APO Refractor ED Object Type: Multple Star System Apparent Position: RA. 10h20m09.2s Dec. +19°49'34" (Leo) Magnitude: 2.0 Object Altitude: 64° Conditions: First fine spring night. 48 degrees. Absolutely clear with occasional clouding. Description: Backyard setup adjacent to Bluebird Observatory. Meade 5" APO Refractor w/Meade Super Plössl 9.7mm, 118x. Close pair. Magnificent double suns, blazing bright. White/yellow. One of the Urban Astronomy Club objects; the only one in Leo.

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