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Science with Your Telescope Brian D. Warner Palmer Divide Observatory Space Science Institute

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Presentation on theme: "Science with Your Telescope Brian D. Warner Palmer Divide Observatory Space Science Institute"— Presentation transcript:

1 Science with Your Telescope Brian D. Warner Palmer Divide Observatory http://www.MinorPlanetObserver.com Space Science Institute http://www.SpaceScience.org

2 Science is Fun! You can use what you already have Expands your knowledge Professionals depend more, not less, on amateur observations Satisfaction of collaborations and publication

3 Asteroid Lightcurves at The Palmer Divide Observatory Correlation between size and period. Slow rotators - what about them is common? Size, shape, pole orientation Additional observations in support of radar observations Remove observational bias towards brighter, main belt asteroids, i.e., increase statistical sampling Correlation between size and period. Slow rotators - what about them is common? Size, shape, pole orientation Additional observations in support of radar observations Remove observational bias towards brighter, main belt asteroids, i.e., increase statistical sampling Why Do Asteroid Lightcurves?

4 The Palmer Divide Observatory 20” 14”

5 The Palmer Divide Observatory 0.5m f/8.1 Ritchey-Chretien FLI-1001E (1Kx1Kx24m) FLI filter wheel - BVRC 80mm/ST-237 guiding 0.35m LX-200GPS North: FLI-1001E - unfiltered South: ST-9E, f/5.0 reducer, VRC

6 The Palmer Divide Observatory

7 A Typical Night Select targets Open observatories Write scripts Start runs Download images during/after runs Measure images and analyze data

8 A Typical Night Works 2 asteroids Periodically syncs Periodically focuses Shuts down camera Homes scope

9 A Typical Night Measure images with MPO Canopus Plot raw data and look for obvious outliers Do Period Search with MPO Canopus Fourier analysis

10 Follow up Merge multiple nights Do Period Search on combined data set

11 It’s Not Always Pretty!

12 Binary Asteroids Initial Discovery at PDO (Oct. 2004 - present) 3309 Brorefeld 5477 1989 UH2 5905 Johnson 9069 Hovland 34706 2001 OP83 76818 2000 RG79

13 Results - Hungarias From Harris Lightcurve List (August 2006) Total Number: 70 PDO (primary): 49 (70%) Spin Rate Distribution: –Two peaks –Less “Spin barrier” effect versus NEO population

14 Results - Hungarias

15 Published quarterly by Minor Planets Section of ALPO. Best place for amateurs to submit. Juried publication, in many professional libraries around the world (good PR for school programs) Inexpensive: FREE! http://www.MinorPlanetObserver/mpb/default.htm The Minor Planet Bulletin Publishing Your Work

16 Data Mining Asteroid Images Variable Star Search

17 Data Mining Asteroid Images Variable Star Search

18 Data Mining Asteroid Images Variable Star Search

19 Data Mining Asteroid Images

20

21 Binary Stars

22 Modeling Binary Stars Binary Maker 3 http://www.binarymaker.com

23 Modeling Binary Stars Binary Maker 3 Mass ratio input = 1.500000 mass ratio < 1 = 0.666667 Omega 1 = 4.439516Omega 2 = 4.439516 Omega inner = 4.526136Omega outer = 3.948668 Fillout 1 = 0.150000Fillout 2 = 0.150000 Surface area 1 = 2.298928Surface area 2 = 1.612613 Volume 1 = 0.321256 Volume 2 = 0.186599 Mean radius 1 = 0.426171Mean radius 2 = 0.355198 Temperature 1 = 5400.00Temperature 2 = 6000.00 Luminosity 1 = 0.4662 Luminosity 2 = 0.5338 Inclination = 72.000

24 Variable Stars (Visual/CCD) American Association of Variable Star Observers (AAVSO) http://www.aavso.org

25 Double Stars Easy to do with CD/DSLR/Webcam equipment Many targets in one night Help is needed on neglected stars

26 Double Stars Washington Double Star Catalog (WDS) http://ad.usno.navy.mil/wds/wds.html Yahoo News Group http://groups.yahoo.com/group/binary-stars-uncensored /

27 Double Stars  a /  a RA / Dec of the primary  b /  b RA / Dec of the secondary

28 Double Stars

29 Publishing Your Results Journal of Double Star Observations http://www.jdso.org/ The Webb Society Double Star Circulars http://www.webbsociety.freeserve.co. uk/notes/doublest01.html

30 Science is FUN! Society for Astronomical Sciences http://www.SocAstroSci.org

31 Acknoweldgements Funding for this research was provided by: NASA grant NNG06GI32G NASA grant NNX06AB30G NSF grant AST-0607505

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