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So what colour is Uranus really?
karolp
post Oct 26 2006, 01:19 PM
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Photos from the Voyager era show it to be on the border of blue and green, particularly greenish in some of them. On the other hand, amateur astronomers report from their backyards a definite "blue blob". So what colour would Uranus appear to human eye? Was the greenish tint made up as a distinction from Neptune? Or was it some flaw in image processing?


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algorimancer
post Oct 27 2006, 02:06 AM
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It's been 15-20 years since I last had a look at Uranus, but I recall it as a small but sharp and brilliant emerald green disc through the 6" reflector I had at the time. These days I have an 8" Celestron, but unable to get much use out of it due to the laser correction I had on my eyes a few years ago... wonderful vision in bright daylight, but bad flares and ghosting in the dark. Anyway I'm having plenty of fun with the math and software end of things these days.

Some of this perceived color variation may be due to the optical glass in the scopes and eyepieces. Part of it may be individual variation. I'm pretty sure that the true color is green, and blue for Neptune. Saturn of course has that nice golden hue, but I don't recall that Jupiter had any special color beyond levels of gray; the red spot never looked red to me.


QUOTE (Kevin Heider @ Oct 26 2006, 03:44 PM) *
...Uranus July 8, 2005...

That last one was really nice, Kevin. Someday I need to try that image stacking thing.
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Posts in this topic
- karolp   So what colour is Uranus really?   Oct 26 2006, 01:19 PM
- - djellison   I've seen it through a 16" scope, and it ...   Oct 26 2006, 01:28 PM
|- - karolp   Check this out (the occultation was visible in Aus...   Oct 26 2006, 01:39 PM
- - MizarKey   karolp, thanks for sharing those occultation image...   Oct 26 2006, 03:32 PM
- - Rob Pinnegar   Those occultation pictures are neat but I'm su...   Oct 26 2006, 03:44 PM
|- - JRehling   QUOTE (Rob Pinnegar @ Oct 26 2006, 08:44 ...   Oct 26 2006, 07:01 PM
- - Kevin Heider   Uranus July 8, 2005 with a Meade 12 inch 200LX-GPS...   Oct 26 2006, 08:44 PM
|- - 4th rock from the sun   Well, to me visually it looks the same color as th...   Oct 26 2006, 11:59 PM
- - algorimancer   It's been 15-20 years since I last had a look ...   Oct 27 2006, 02:06 AM
- - odave   I've always seen it as greenish through my bat...   Oct 27 2006, 01:06 PM
|- - ugordan   QUOTE (odave @ Oct 27 2006, 02:06 PM) Thi...   Oct 27 2006, 01:18 PM
- - odave   Yup, I remember quite a debate on this topic back ...   Oct 27 2006, 01:32 PM
- - J.J.   In almost all of the amateur images I've seen ...   Nov 11 2006, 09:57 PM
|- - Airbag   Slightly off topic...I was inspired by HST's...   Dec 5 2006, 06:44 PM
- - Floyd   That is really great. Have you created bowls for ...   Dec 5 2006, 07:13 PM
|- - Airbag   Thanks! No, I do not have the right glazes fo...   Dec 5 2006, 09:15 PM
|- - JRehling   QUOTE (Airbag @ Dec 5 2006, 01:15 PM) Tha...   Dec 5 2006, 09:23 PM
- - elakdawalla   I'm resurrecting this old thread because while...   Dec 9 2009, 05:20 PM
|- - ugordan   Have you tried Views of the Solar System site?   Dec 9 2009, 05:27 PM
|- - Antdoghalo   QUOTE (ugordan @ Dec 9 2009, 12:27 PM) Ha...   Dec 9 2009, 08:55 PM
- - elakdawalla   No because I hate that website's over-the-top ...   Dec 9 2009, 05:40 PM
|- - tedstryk   QUOTE (elakdawalla @ Dec 9 2009, 05:40 PM...   Dec 9 2009, 11:08 PM
- - Ron Hobbs   I have always thought that this was the definitive...   Dec 9 2009, 11:52 PM
- - stevesliva   Adblock Plus seems to be catching them all. I don...   Dec 10 2009, 12:09 AM
- - JohnVV   QUOTE No because I hate that website's over-th...   Dec 10 2009, 01:35 AM
|- - tedstryk   Using Voyager color is treacherous. I strongly re...   Dec 10 2009, 02:19 AM
- - JGodbaz   Since the Voyager camera had very little true red ...   Dec 10 2009, 04:31 AM
- - 4th rock from the sun   If you want to have fun, here are two links to Ura...   Dec 10 2009, 11:13 AM
- - machi   This is my experiment with Uranus images. But I do...   Dec 12 2009, 11:11 PM
- - Decepticon   ^ So what would it look like in real colour? Nic...   Dec 13 2009, 12:02 AM
- - machi   I tried to match color to approximately real look....   Dec 13 2009, 12:39 AM
- - JGodbaz   The problem with having only one spectra is that y...   Dec 13 2009, 03:29 AM
- - PhilCo126   Well through a refractor it looks white-blueisch   Dec 13 2009, 01:23 PM
- - siravan   Regarding visual inspection of Uranus color throug...   Dec 13 2009, 03:46 PM


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