Moving Stars in the Sky

[Nemesis]

Just fiddling around with my bulb setting on my camera. 10 Minute Shutter count, and this is what I got. Nothing crazy, just love how with that long of a shutter speed you see the Earth rotate :camera:

By the way it was pitch black out in the back yard.

http://www.importatlanta.com/nemesis/misc/star2.jpg

http://www.importatlanta.com/nemesis/misc/stars.jpg

[slowrolla97]

damn that is crazy!!! what is that green light from????

[Nemesis]

damn that is crazy!!! what is that green light from????


Our neighbor had a bright as flood lamp in his back yard and for Christmas he put a green bulb in it :rolleyes: LOL


Im going to see if I can get a 30 minute shutter count, and see how it comes out :D

[SLow_POke]

i like

fell like making it my desk top back ground :D

[imbosile]

30 minute! wow, what's the highest your camera will do, I think mine is 30 second.

[Nemesis]

Ive got a few more that came out great! One with a plain trail! Im uploading them now!

Oh, I think your D50 can also do this, if you have a 'bulb' setting.

[Nemesis]

Here is another! The trail you see is a plane as it passed by above

http://www.importatlanta.com/nemesis/misc/star2.jpg

[Dominic49]

if you have the serial connector for your camera you can use nikons program to hold the shutter open for you at long intervals... also have you been pre cooling your camera before taking shots? in all my astro photography exsperiance i have leaned to leave my camera outside a good hour before i think about shooting anything...

[Nemesis]

if you have the serial connector for your camera you can use nikons program to hold the shutter open for you at long intervals... also have you been pre cooling your camera before taking shots? in all my astro photography exsperiance i have leaned to leave my camera outside a good hour before i think about shooting anything...


Wierd, Ive never heard of that, what purpose does the precooling provide?

[5spdfrk]

Maybe so your sensor doesn't heat up as fast?

[Dominic49]

Wierd, Ive never heard of that, what purpose does the precooling provide?

helps get rid of noise....

some hardcore astro photographers actually attach peltier coolers to the back of their ccds (cmos) to bring the temps down.

http://www.geologynet.com/astronomy/astrophotography.htm
http://loen.ucolick.org/tvguidecam/ccd_coolingt.htm

[Nemesis]

LOL I dont plan on removing my sensor anytime soon. That is cool though I never heard of that.

[Hektik]

those shots are amazing...

[Dominic49]

also if you really want to get into astro-photo look into image stacking (shift and add) http://www.cs.unm.edu/~kwiley/software/keithsImageStacker.html

[fawk_you]

bad ass! :)

[koukis14]

You must spread some Reputation around before giving it to Mr. Nemesis again.

nice

[Nemesis]

Thanks everyone :)

[£G2♣]

awesome nice

[uproot]

wow dude, thats awesome :goodjob:

[rickgiblin]

i know that this is a noob question for photography but what is the purpose for a shutter, and when you say it has a shutter of 10 minutes what does that mean. im trying to get into photography but trying to get a background before i go out and buy a d60 and all that

[dp32185]

i know that this is a noob question for photography but what is the purpose for a shutter, and when you say it has a shutter of 10 minutes what does that mean. im trying to get into photography but trying to get a background before i go out and buy a d60 and all that

I'll leave the technical response alone for the pros :D basically, shutter of 10 minutes means you're 'recording' whatever is happening between the moment you press the shoot button until 10 minutes is up. instead of a playback like a video cam, you have a single recorded picture.

the reason why you see the 'trail' in the original picture is because during the shutter speed of 10 minutes or whatever it was set at...a plane happend to fly by which left the long trail of white line in the picture.

notice the stars fade? it shows the distance it moved. notice the green light hasn't faded...because it's a stationary object. if you moved the camera even 1mm left or right, up or down...the green light would've faded or blurred as well.

most intro level dSLR cams have max of 30 seconds of shutter speed. 'shutter' opens and closes to let the light in. 30 seconds means the shutter (door) opens for 30 seconds. if you take a pic of a moving object, you need faster shutter speed so the door opens and closes fast which will then capture the subject without any blur.

sorry...i re-read my post and it might be even more confusing. didn't mean to make it this long... :doh:

[Dominic49]

shutter speed is how long the median (film ccd cmos) is exsposed to light...