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

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