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Plans for Tomorrow Night’s Erato Occultation

Plans for Tomorrow Night’s Erato Occultation. 2014 July 13 32 nd Annual IOTA Meeting University of Maryland Observatory College Park, MD David W. Dunham. Wide-field Star Chart, Preston.  North.  Moon. target. Need moon shade on upper left side of telescope to prevent glare from

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Plans for Tomorrow Night’s Erato Occultation

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  1. Plans for Tomorrow Night’s Erato Occultation 2014 July 13 32nd Annual IOTA Meeting University of Maryland Observatory College Park, MD David W. Dunham

  2. Wide-field Star Chart, Preston  North  Moon target Need moon shade on upper left side of telescope to prevent glare from the 88% sunlit Moon 13 away

  3. Wide-field Star Chart, Iverson  Zenith • Moon • (not shown)  North 2 Computed for MD-DC-VA region

  4. Moon Level 4 “Finder Scope” Star Chart, Iverson  Computed for MD-DC-VA region; FOV is for a mighty mini

  5. Level 5 “ 80mm Midi” Star Chart, Iverson  Deneb Algedi  Computed for MD-DC-VA region; FOV is for a mighty midi

  6. Level 6 “120mm Maxi” Star Chart, Iverson  Nashira Computed for MD-DC-VA region; FOV is for a mighty maxi

  7. Pre-Point Star List for the Erato Occ’n – DC area Occultation of TYC 5798-00119-1 by 62 Erato on 2014 July 15 Pre-point stars for the greater Washington, DC region Univ. J2000 Dec Time Time Star RA Dec Offset E. D. T. Offset Star h m s mag h m o ' ArcMin h m s h m s Designation 7 46 15 10.4 21 33.3 -14 53 star 3 46 15 am 0 0 0 7 35 13 8.3 21 22.3 -14 55 2.6 3 35 13 am 0 11 2 7 29 34 8.1 21 16.6 -14 49 -3.1 3 29 34 am 0 16 41 7 28 43 5.3 21 15.7 -15 10 17.8 3 28 43 am 0 17 32 29 Cap Note 1 7 18 39 8.0 21 5.6 -14 54 2.0 3 18 39 am 0 27 36 7 16 14 8.6 21 3.2 -14 50 -2.4 3 16 14 am 0 30 1 7 11 43 6.0 20 58.7 -14 29 -23.2 3 11 43 am 0 34 32 DV Aquarii Note 2 7 1 31 8.9 20 48.5 -14 54 2.3 3 1 31 am 0 44 44 6 52 21 5.2 20 39.3 -14 57 5.4 2 52 21 am 0 53 54 tau Cap Note 3 6 47 32 8.3 20 34.4 -14 53 0.9 2 47 32 am 0 58 43 6 40 11 7.9 20 27.1 -14 47 -4.6 2 40 11 am 1 6 4 6 34 9 3.1 20 21.0 -14 47 -4.7 2 34 9 am 1 12 6 Dabih Major Note 4 6 33 55 6.1 20 20.8 -14 47 -4.5 2 33 55 am 1 12 20 Dabih Minor Note 5 Notes 1. The star is SAO 164263 = ZC 3108. 2. The star is SAO 164027 = ZC 3066. 3. The star is SAO 163771 = ZC 3015. 4. This brighter following component is sometimes called beta2 Cap, which follows the convention of numbering wide components of stars with Bayer Greek letter designations in their order of increasing right ascention, and this is what Jim Kaler specifies at http://stars.astro.illinois.edu/sow/dabih.html. But Wikipedia and some others (including the S&T/ESA Millenium Star Atlas) reverse the order, calling this brighter component beta1 Cap (Capricorni). The star is SAO 163481 = ZC 2969. This star is of personal interest since on 1957 October 30, shortly after I was given my first telescope, I observed a very close miss (star passing over the Leibnitz Mountains near the lunar south pole), sparking my interest in lunar grazing occultations and dynamical astronomy. 5. This fainter component I believe should be beta1 Cap; see Note 1. The star is SAO 163471 = ZC 2968.

  8. Wide-field Star Chart, Iverson, Shows 2 Cap  Zenith • Moon • (not shown)  North 2 Computed for MD-DC-VA region

  9. Level 4 “Finder Scope” Star Chart, Iverson   Computed for MD-DC-VA region; FOV is for a mighty mini

  10. Level 5 “ 80mm Midi” Star Chart, Iverson  2 Dabih Major Computed for MD-DC-VA region; FOV is for a mighty midi

  11. Occult Watcher Stations for the Erato Occ’n – DC area

  12. Occult Watcher Stations for the Erato Occ’n – NE USA

  13. Occult Watcher Stations for the Erato Occ’n – SE USA

  14. Occult Watcher Stations for the Erato Occ’n – List Distance (Occult) Prob. Cloudy Station info Submitted by City ------------------------------------------------------------------------------------------------------------------------------ 206.7 km 0.1% - == Right limit plus 3-Sigma == 155.8 km 2.3% - == Right limit plus 2-Sigma == 105.0 km 15.8% - == Right limit plus 1-Sigma == 91.6 km @323° 22.9% 100% (20) Blank T Mobile : video + gps Ted Blank Hampton, NH 80.9 km @323° 29.6% 90% (17) Blank T Mobile : video + gps Ted Blank Hampton, NH 69.9 km @321° 37.0% 90% (19) Blank T Mobile : video + gps Ted Blank Hampton, NH 59.9 km @327° 44.2% 90% (5) Creek Hill Obs : video + gps Ned Smith Trenton, GA 54.1 km 48.3% - === Right limit === 52.4 km @322° 49.5% 40% (2) Willow Oak Obs : video + gps Steve Conard Gamber, MD 51.5 km @320° 50.1% 90% (18) Blank T Home : video + gps Ted Blank Hampton, NH 50.1 km @323° 51.1% 40% (12) Conard S Mobile-Gamber : video + gps Steve Conard Gamber, MD 33.7 km @325° 61.4% 50% (16) Holenstein-Gravic : video + gps Bruce Holenstein Malvern, PA 31.3 km @328° 62.6% 10% (9) Iverson : video + gps Ernie Iverson Lufkin, TX 23.9 km @326° 66.1% 100% (3) Rolnick Observatory : video + gps Kevin Green Westport 20.9 km @328° 67.3% 60% (4) Scheck A Home : video + gps Andrew Scheck Scaggsville, MD 11.2 km @318° 70.1% 60% (11) UMD Observatory College Pk MD : video + gps David Dunham Greenbelt, MD 5.6 km @325° 71.0% 60% (10) Dunham D Home : video + gps David Dunham Greenbelt, MD 0.0 km 71.3% - ==== Centre Line ==== -6.9 km @130° 70.8% 50% (6) AACC : video + gps Chad E FCO, MD -15.5 km @149° 69.1% 80% (14) App State Dark Sky Obs : drift scan + other Daniel B. Caton Boone -19.0 km @143° 68.0% 50% (7) Winfree Obs : video + gps Hartzel Gillespie Lynchburg, VA -32.6 km @142° 62.0% 80% (1) FCO, MD : photoelectric + other Chad E FCO, MD -47.8 km @143° 52.7% 100% (13) CSMD : video + gps Chad E FCO, MD -54.1 km 48.3% - === Left limit === -105.0 km 15.8% - == Left limit plus 1-Sigma == -155.8 km 2.3% - == Left limit plus 2-Sigma == -206.7 km 0.1% - == Left limit plus 3-Sigma ==

  15. NWS cloud-cover forecast

  16. Canadian transparency forecast

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