View Full Version : Moon Shots....??
tjrenegade
11th of January 2007 (Thu), 08:32
I been seeing all these great shots of the Moon posted here and Itried it myslef this morning and al I got was a moon shaped blob....n
I am using a 400D on a trip pod with the 70-300 Zoom EF IS Lens set at 300mm I am setting the exposure to what the meter reads....the image looks crisp in the view finder but when I snap the shot ( using the timer) I get this...
What am I doing wrong...I figure its my exposure its too long
Dusty
11th of January 2007 (Thu), 08:35
Exposure is too long, also reduce your ISO below 800 and use mirror lockup.
Woolburr
11th of January 2007 (Thu), 08:35
Way over-exposed....try this....1/350 second f/5.6 at ISO 100...use a tripod, remote and mirror lock up...adjust your settings from there.
http://www.pbase.com/woolburr/image/52361145/medium.jpg
tjrenegade
11th of January 2007 (Thu), 08:41
Ok thanks thats what I figured....how does mirror lock up work?? I know how to enable it on the camera but whats actualy happening...how do I use it? Thanks
Dusty
11th of January 2007 (Thu), 08:41
Found one I did a few months ago.
The Moon with Mercury on the right of it and Jupiter on the far bottom right and Jupiter's moons around it.
Dusty
11th of January 2007 (Thu), 08:47
Ok thanks thats what I figured....how does mirror lock up work?? I know how to enable it on the camera but whats actualy happening...how do I use it? Thanks
When it's enabled it will lift the mirror with the first press but will not fire the shutter, then with the second press it will expose the shot thus any vibration from the mirror would have died down and not affect the actual shot.
This of course means you have to press the shutter (cable release) twice.
Woolburr
11th of January 2007 (Thu), 08:47
Once you engage the mirror lock-up function, the mirror will swing up out of the way when you first press the shutter button completely. Give the camera a second to stop vibrating...and press again...now only the shutter moves...much less vibration.
tweatherred
11th of January 2007 (Thu), 08:57
This is a classic situation where your camera meter is fooled. It has been described many times before in this forum, but for those who haven't seen it yet, the principle behind moon shots is that the moon is fully lit by the sun, and therefore can be exposed by the "sunny 16" rule-exposure 1/ISO at f/16 (or an equivalent exposure). Why doesn't your camera's meter read this? Because the moon is surrounded by nearly black sky that is averaged in. This will happen even with a 1 degree spot meter, as the moon is about 1/2 degree of arc in angular size (or 30 min of arc if you prefer).
I am really intrigued by Dusty's picture. It almost looks as if it was exposed for the dark portion of a crescent moon. Otherwise how do you get that bright crescent on the lower portion of the moon and expose the sky light enough to see stars? That is really a nice shot, however it was accomplished.
Dusty
11th of January 2007 (Thu), 09:06
I am really intrigued by Dusty's picture. It almost looks as if it was exposed for the dark portion of a crescent moon. Otherwise how do you get that bright crescent on the lower portion of the moon and expose the sky light enough to see stars? That is really a nice shot, however it was accomplished.
Thank you.
It was taken when the moon was a very thin crescent so only a small part of it is over exposed. The rest of it is lit up by what's called earth shine which is sun light reflected back to the moon from our earth and lighting up the dark portion of the moon.
Oh I forgot to mention it was taken at dusk so the sky was a deep deep blue. Then it was a matter of working in manual mode to get the exposure right using a wide apperture.
tjrenegade
11th of January 2007 (Thu), 09:15
OK I think I get it! Thanks for the explanation..Dusty awsome shot....
Scunner
11th of January 2007 (Thu), 10:02
Dusty,
That really is a beautiful shot. Do you have a larger version online? I'd love to see more detail of the moon and Jupiter.
stupot
11th of January 2007 (Thu), 10:05
incredible shot dusty, i was also wondering about the crescent and immediatly though photoshop was used. can you see that effect with the naked eye? i don't think i've ever seen it before.
Dusty
11th of January 2007 (Thu), 10:21
Dusty,
That really is a beautiful shot. Do you have a larger version online? I'd love to see more detail of the moon and Jupiter.
I'll see what I can do, glad you liked it.
Thank you.
incredible shot dusty, i was also wondering about the crescent and immediatly though photoshop was used. can you see that effect with the naked eye? i don't think i've ever seen it before.
Our eyes are much more sensitive and can handle a wider dynamic range than any camera.
But at night or low light levels our eyes are not very efficient so it doesn't look as dramatic (that's also why we can't see much colour visually through a telescope).
But the camera can capture this detail (in a long exposure) and we can reveal it to a point using software like PS.
I simply adjusted the levels to bring out the detail.
Glad you liked it, thank you.
tweatherred
11th of January 2007 (Thu), 10:57
Thank you.
It was taken when the moon was a very thin crescent so only a small part of it is over exposed. The rest of it is lit up by what's called earth shine which is sun light reflected back to the moon from our earth and lighting up the dark portion of the moon.
Oh I forgot to mention it was taken at dusk so the sky was a deep deep blue. Then it was a matter of working in manual mode to get the exposure right using a wide apperture.
Thanks for the explanation. I thought it was somthing like that; another clue that it was close to either sunrise or sunset is the fact that Mercury is seen. I had no idea you could get the earth-lit moon to show up so well; now I have something to try.
StewartR
11th of January 2007 (Thu), 12:13
I had no idea you could get the earth-lit moon to show up so well; now I have something to try.There's a good example of it here (http://photography-on-the.net/forum/showpost.php?p=2471999&postcount=48).
Dusty
11th of January 2007 (Thu), 19:54
Dusty,
That really is a beautiful shot. Do you have a larger version online? I'd love to see more detail of the moon and Jupiter.
You can download it from here (http://www.iceinspace.com.au/uploads/moon-merc-jup-hi-res.rar)in a compressed 1MB .rar file, which will open to a 2.8mb .tif image.
Cheers.
lowbody2
11th of January 2007 (Thu), 22:25
heres a moon shot i did with the camera on auto and on a tripod. im new to cameras so i dont know how to use the manuel setting yet.
pagefile
11th of January 2007 (Thu), 22:52
...earth shine which is sun light reflected back to the moon from our earth and lighting up the dark portion of the moon.
Thats one heck of a flash bounce. How did you trigger the solar flair? j/k
Nice moon shot.
Scunner
12th of January 2007 (Fri), 07:01
You can download it from here (http://www.iceinspace.com.au/uploads/moon-merc-jup-hi-res.rar)in a compressed 1MB .rar file, which will open to a 2.8mb .tif image.
Cheers.
Wow. The clarity of the sky is amazing. Thank you for uploading the .tif.
I love astrophotography, but there's so much light pollution here in Cincinnati that I have to travel some distance to get away from the urban light.
Scunner
12th of January 2007 (Fri), 07:13
Here's one of my first moon shots. Taken with a Powershot S30 held up to the eyepiece of my 60mm Celestron telescope.
138000
StewartR
12th of January 2007 (Fri), 08:41
heres a moon shot i did with the camera on auto and on a tripod. im new to cameras so i dont know how to use the manuel setting yet.Hi lowbody2 and welcome to POTN!
As you've probably realised, to take good shots of the moon you need to over-ride your camera's exposure settings. What it's seeing is a very bright disc surrounded by a lot of black sky, and it doesn't know how the picture "should" look, so you have to tell it.
If you want to learn how to use your camera more effectively, this is a great place. Read the 'stickies' at the tops of the forums, learn how to use the forum's search facilities, and ask questions.
Enjoy!
dtrayers
12th of January 2007 (Fri), 09:28
Here is a handy calculator to help with figuring out exposure settings:
http://www.shaystephens.com/moon_calc.php
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