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brightness of Venus
ncc1701d
post Dec 21 2007, 07:28 PM
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I was wondering.
If Venus reflects 70 percent of the sunlight that hits it.
If I was in spaceship on approach to that planet could I look at it with the naked eye out the window and not get blinded?
Would I have to at least use sunglasses?

I am wondering to how much brightness reduction is going on when processing the images before they are release to public or analized.
thanks
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bkellysky
post Jun 16 2010, 11:47 AM
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Last night, I was taking pictures of Venus, et al., after sunset, when someone asked me what the bright light next to the moon was. He said he figured I'd know, since I had the camera/tripod set up. I told him it was Venus and that some of the other dots to the upper left were a bright star, and the planets Mars and Saturn. "But you can't see those," he said and resumed walking around the track as I called after him, "Yes, you can if look when you are on the darker side of the track....." Maybe if I had the telescope and after looking though the scope, I had pointed out in the sky what we were looking at, he might have understood.
Amazing what people think they can't see, and really could if they looked for a moment.
Of course, that's when people start moving away from the crazy guy with the camera.....

Here's the Moon and Venus, cropped from a larger photo posted at bkellysky.wordpress.com....
Notice the earthshine on the Moon and the dot of light at the lower left end of the lunar crescent, separated from rest of the sunlit portion. This is likely a lunar mountain or crater wall sticking up into the sunlight, but I didn't have my binoculars to check.
Venus is an overexposed blob, but I've included it here for comparison.

bob
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Posts in this topic
- ncc1701d   brightness of Venus   Dec 21 2007, 07:28 PM
- - ngunn   I would recommend sunglasses at least. Even at Ear...   Dec 22 2007, 11:14 PM
|- - ugordan   If you were in a spaceship, even Earth would appea...   Dec 23 2007, 12:04 AM
- - edstrick   Something I've worried about is a hazard when ...   Dec 23 2007, 10:31 AM
|- - Stu   QUOTE (edstrick @ Dec 23 2007, 10:31 AM) ...   Dec 23 2007, 10:41 AM
- - J.J.   A pretty interesting question, one I've specul...   Dec 23 2007, 03:46 PM
- - dvandorn   I'd just like to bring into this conversation ...   Dec 23 2007, 04:50 PM
|- - JRehling   The John Young incident is interesting, and not on...   Dec 23 2007, 10:39 PM
- - J.J.   ^ Ditto--and the Sun is twice as bright at Venus...   Dec 23 2007, 05:29 PM
- - dvandorn   Many of the Apollo astronauts chose to wear sungla...   Dec 24 2007, 07:45 AM
- - PhilCo126   Talking about a bright Venus, ESA made a website o...   Jan 2 2008, 05:42 PM
- - PhilCo126   Looking South these winter evenings, You'll no...   Nov 25 2008, 05:42 PM
- - Stu   This is how they looked this time last week from n...   Nov 25 2008, 05:47 PM
- - CAP-Team   Yes, Venus and Jupiter look very nice in the eveni...   Nov 26 2008, 10:04 PM
- - scalbers   I suppose I need sunglasses just being on Earth...   Nov 27 2008, 06:55 PM
- - Enceladus75   I saw a stunning view of Jupiter and Venus in the ...   Nov 27 2008, 10:09 PM
- - bkellysky   Here's Jupiter and Venus, just after sunset on...   Nov 29 2008, 12:24 AM
- - bkellysky   Jupiter with brighter Venus below it. I took this...   Nov 30 2008, 12:11 AM
- - bkellysky   Photos of the conjunction of the Moon, Venus and J...   Dec 2 2008, 02:01 PM
- - bkellysky   A second photo from last night's conjunction -...   Dec 2 2008, 02:04 PM
- - PhilCo126   For those UMSF members/lurkers still observing the...   Dec 17 2008, 04:43 PM
- - bkellysky   My most recent photo of the sky with Venus is from...   Jan 16 2009, 10:04 PM
|- - AndyG   QUOTE (bkellysky @ Jan 16 2009, 10:04 PM)...   Jan 17 2009, 01:25 PM
|- - ugordan   Jupiter's reflection (if any) would be vertica...   Jan 17 2009, 03:06 PM
- - bkellysky   Good points! It must just be a camera artifac...   Jan 17 2009, 03:54 PM
- - bkellysky   If people don't mind my using this thread to s...   Apr 18 2009, 12:38 PM
- - bkellysky   Some parts of the United States got to see Venus e...   Apr 24 2009, 11:31 AM
- - bkellysky   Here's a shot of Venus through my 8-inch Dobso...   Apr 24 2009, 11:44 AM
- - bkellysky   Venus is now a brilliant object in the western sky...   Jun 16 2010, 12:42 AM
- - bkellysky   Last night, I was taking pictures of Venus, et al....   Jun 16 2010, 11:47 AM
- - bkellysky   Venus, through my 8-inch dobsonian telescope, in t...   Jul 6 2010, 01:17 AM
- - ElkGroveDan   Wow. Thanks. I do believe that's one of the ...   Jul 6 2010, 02:36 AM
- - nprev   Agreed. I've always heard that Venus was often...   Jul 6 2010, 02:41 AM
- - Hungry4info   I watched the most recent occultation of Venus by ...   Jul 6 2010, 04:05 AM
- - bkellysky   Crescent Venus with a Canon XS and my 8-inch dobso...   Nov 4 2010, 01:52 AM
|- - AndyG   Nice one, Bob - though I was a bit before readin...   Nov 4 2010, 09:46 AM
- - bkellysky   Venus was impossible to miss, low in the southeast...   Nov 10 2010, 03:45 AM
- - bkellysky   Anytime up to an hour before sunrise, Venus is bri...   Nov 11 2010, 02:13 PM
- - bkellysky   This morning's photo of a skyscape including V...   Nov 12 2010, 12:19 PM


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