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Can I see Uranus and Neptune with an iOptron telescope with a 600mm focal length. If so, can I expect to see them in colour, or simply as white objects?

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  • $\begingroup$ Could you provide some detail on what you mean by "household telescope"? $\endgroup$ – Dr Chuck Aug 17 '17 at 16:35
  • $\begingroup$ ioptron 600mm focal length. $\endgroup$ – Gold Nile Aug 17 '17 at 16:49
  • $\begingroup$ Is that the refractor with 50 mm aperture? $\endgroup$ – Florin Andrei Aug 17 '17 at 17:57
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Yes, you can.

I use a Newtonian reflector, 200mm objective, 1000mm focal length.

Uranus is sometimes right on the fringe of naked eye but looks a lot clearer as a small but recognisable blueish disc.

Neptune, sadly, just looks like a star to me ... but you can find it.

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  • $\begingroup$ Personally never seen Neptune with a smallish (150mm) reflector, but have seen Uranus $\endgroup$ – adrianmcmenamin Aug 17 '17 at 17:55
  • $\begingroup$ It also matters where you are (elevation and light pollution) and how good your eyesight is. $\endgroup$ – userLTK Aug 17 '17 at 19:40
  • $\begingroup$ Of course "seeing" isn't enough - I think you also have to be able to say that you identified the particular point of light as your target. If Neptune is in a region of stars, then which "star" is it is an important question $\endgroup$ – MartinV Aug 18 '17 at 20:06

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