Alpo observations of the remote planets in 2012 2013
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ALPO Observations of the Remote Planets in 2012-2013. Richard W. Schmude, Jr. Gordon State College. Overview. Introduction Images Photometry Conclusions. Introduction. Seasonal brightness changes Uranus Neptune Images Visible Near-infrared. Images. Usually a large telescope

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ALPO Observations of the Remote Planets in 2012-2013

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Alpo observations of the remote planets in 2012 2013

ALPO Observations of the Remote Planets in 2012-2013

Richard W. Schmude, Jr.

Gordon State College


Overview

Overview

  • Introduction

  • Images

  • Photometry

  • Conclusions


Introduction

Introduction

  • Seasonal brightness changes

    • Uranus

    • Neptune

  • Images

    • Visible

    • Near-infrared


Images

Images

  • Usually a large telescope

    • 1.0 m Pic du Midi Observatory (France)

    • 1.29 m Skinakas Observatory (Greece)

  • Filters:

    • B, V, R

    • Near-infrared


Uranus sept 14 2012 flavius isac 0 25 m sct

Uranus: Sept. 14, 2012Flavius Isac 0.25 m SCT


Alpo observations of the remote planets in 2012 2013

Uranus: August 8, 2012F. Colas, J. L. Dauvergne, M. Delcroix, T. Legault & C. ViladrichPic du Midi 1.0 m telescope


Uranus september 17 2012 a obukhov moscow russia c11 telescope

Uranus: September 17, 2012A. Obukhov, Moscow Russia (C11 telescope)


Uranus september 17 2012 j boudreau ma usa c11

Uranus: September 17, 2012J. Boudreau, MA, USA (C11)


Uranus belt latitudes

Uranus Belt Latitudes

  • Equatorial Belt

    • 2° S to 13° N (3° uncertainty)

  • North Temperate Belt

    • 45 3° N to 59° N (3° uncertainty)


Neptune august 27 2012 g maravelias and m kardasis skinakas observatory 1 29 m

Neptune: August 27, 2012G. Maravelias and M. Kardasis Skinakas Observatory 1.29 m


Photometry

Photometry

  • Measurement of Brightness

  • Accurate brightness measurements since 1950

  • B, V, R and I filters


Photometry uranus

Photometry: Uranus

V(1,a) = -7.117 ± 0.007

B – V = 0.47

R – V = 0.307

I – R = 1.18

*Uranus is a little fainter than in the previous apparition


Photometry neptune

Photometry: Neptune

V(1,a) = -7.005 ± 0.009

B – V = 0.384


Photometry oberon

Photometry: Oberon

  • September 24, 2012 unfiltered image:

    • Titania was 0.25 mag. brighter than Oberon


Conclusions

Conclusions

  • Several astronomers have imaged albedo features on Uranus using telescopes as small as a C11.

  • Uranus is a little fainter than in the previous apparition


Acknowledgements

Acknowledgements

P. Abbott, K. Bailey, J. Boudreau, F. Colas, J. L. Dauvergne, M. Delcroix, F. Emond, J. Fox, M, Kardasis, T. Legault, S. Maksymowicz, G. Maravelias, M. Mattei, F. Melillo, C. Pellier, J. P. Prost, T. Boyle, C. Viladrich

P. Abel, P. Bayle, G. Bianchi, D. Gray, T. Ikemura, F. Isac, A. Kazemoto, A. Lasala, P. Maxson, A. Medugno, S. Mogami, A. Obukhov, D. Peach, J. J. Poupeau, E. Punzo, S. Quaresima, H. Sasse, J. Sussenbach, G. Tarsoudis and A. Yamazaki


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