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Neptune, Triton and Nereid


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About this observation
Paul Leyland
Time of observation
27/11/2018 - 20:40
Neptune, Triton and Nereid
Observing location
Tacande Observatory
0.4m Dilworth-Relay
SBIG-8 with AO-7 autoguider
No filter
2018-11-27T20:40:40 -- 22:46:50
2018-11-27T20:44:28 -- 20:44:31
22 subs median combined 400s for Nereid, single 3s for Neptune & Triton

The second in my series of imaging smaller satellites in the outer solar system, Nereid was markedly easier than Sycorax.  Neptune and Triton were overexposed even at 3s but that's the best I could put into the composite.  Nereid is circled in the main image which is made from 22 subs median-combined with a total exposure time of 400 seconds.  According to the MPC ephemeris Nereid was magnitude 19.4 at the time, though I've not (yet) made any attempt at either photometry or astrometry.

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