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SPHERE, Spectro-Polarimetric High-contrast Exoplanet REsearch instrument
machi
post Jun 10 2014, 08:31 PM
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Page: SPHERE (ESO)

With its first light successfully gathered I think that this instrument deserve its own topic.

This instrument is similar to the Gemini Planet Imager (GPI) and its prime scientific objective is the discovery and study of extra-solar planets
(mostly giants, but for closest stars even super-earths are possible under very fortunate conditions).
Another objectives are proto-planetary disks, brown dwarfs, evolved massive stars, Solar System and extragalactic science.

SPHERE has three instruments:

- The Infra-Red Dual-beam Imaging and Spectroscopy (IRDIS) - NIR imager and spectrograph.
- The Integral Field Spectrograph (IFS) - NIR spectrograph.
- The Zurich Imaging Polarimeter (ZIMPOL) - visible/NIR imaging polarimeter.

There are four images from SPHERE which were published as results of "first light" observations -

Image of Titan at 1.59 microns:



Images of Titan with polarimetric mode (and in visible light):



Dusty ring around the star HR 4796A:



A very low mass companion star to Iota Sagitarii from IRDIS (left image) and IFS (right image):



All images credit: ESO/J.-L. Beuzit et al./SPHERE Consortium


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Jackbauer
post Sep 7 2015, 06:38 PM
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SPHERE maps the surface of Ceres !!

http://www.eso.org/public/images/potw1536a/
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Explorer1
post Sep 7 2015, 08:50 PM
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Wow! That's impressive. Albeit Dawn is already there... this would be a useful improvement for the other giant main belt asteroids?
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Floyd
post Sep 7 2015, 10:09 PM
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Dawn provides ground truth for Sphere and Hubble images.


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ZLD
post Sep 8 2015, 02:59 AM
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This is quite impressive. Anyone know if Pluto is on the docket for observation in the future? Would be very interesting to see it used on the most distant high resolution imaged object.


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TheAnt
post Sep 8 2015, 05:36 PM
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Pluto would be rather small due to extra distance.
Though when seeing those images of Ceres, I think SPHERE could improve a lot on the best views we currently have of Pallas.
Hubble image below.

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Jackbauer
post Sep 8 2015, 06:20 PM
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QUOTE (TheAnt @ Sep 8 2015, 07:36 PM) *
Though when seeing those images of Ceres, I think SPHERE could improve a lot on the best views we currently have of Pallas.
Hubble image below.



Image of Pallas by Gemini Planet Imager (GPI)

http://arxiv.org/pdf/1407.2301.pdf


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TheAnt
post Sep 9 2015, 08:40 PM
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Thank you for the heads up Jackbauer. =)
I can see the moire pattern, and so I agree that Pallas look quite featureless at that resolution.
Even so I find it interesting as the remaining large asteroid that have not been closely studied, and perhaps will remain so for quite some time due to the inaccessible inclined orbit. So telescope images might be our best bet for quite some time.
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Paolo
post Sep 11 2015, 06:22 PM
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VLT/SPHERE- and ALMA-based shape reconstruction of asteroid (3) Juno
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Gladstoner
post Jun 29 2018, 11:44 PM
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More asteroids....

Clock-wise from upper left, 29 Amphitrite, 324 Bamberga, 2 Pallas, and 89 Julia:
Attached Image

http://www.eso.org/public/images/potw1749a/

4 Vesta:
Attached Image

http://www.eso.org/public/images/potw1826a/

6 Hebe:
Attached Image

http://www.eso.org/public/images/potw1725a/
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