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WW Gordon:
I recently bought a Nikon D100 Digital SLR camera; my wife just bought a Celestron G-8 telescope. Mating the two seems like a good idea, and I've seen D100 images on the 'net, but can't figure out how to set up the camera. I've get the T-adaptor, but since the D100 has to have a "CPU" lens for it's metering, it appears I lose all ability, even in manual mode, to set things such as aperture and exposure time. I'm sure I'm missing something here -- can anyone offer suggestions? Thanks! Obviously you can't set the aperture with the D100 on the G8, but you can certainly adjust the shutter speed by setting the mode to "M" and turning the thumb dial at the back of the camera (sorry, I don't remember Nikon's name for the front and rear dials). Don't forget to turn on the anti-shock feature -- the camera pauses for a moment after the mirror flips up to let the vibration that that action might cause die down, then it takes the exposure. Turn this back off before regular photography, or it'll drive you nuts. You also need to use the self timer for astrophotography. The D100 is a great camera -- mine paid for itself in no time with occasional commercial work. It isn't good for long-exposure astrophotography because the chip is quite noisy. It is excellent for lunar and planetary photography, however. I do my lunar and planetary photography with the "hat trick." I set the self-timer for eight seconds and I set the shutter speed for about five seconds. While the timer is ticking down I position a piece of flat black mounting board in front of the telescope. About two seconds after the shutter opens (and all vibrations have ended) I move the board away quickly, then back again -- the board serves as my shutter. This eliminates all blur from camera vibration. You won't know what your shutter speed is, and you'll get a number of over- or under-exposed images for each good exposure, but digital film is cheap. My results are at my non-commercial, family-safe site http://www.davidillig.com/astronomy.shtml. Happy shooting! Davoud -- usenet *at* davidillig dawt com |
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Great tips! Thanks, I'll give it a shot.
Wyatt "Davoud" wrote in message ... WW Gordon: I recently bought a Nikon D100 Digital SLR camera; my wife just bought a Celestron G-8 telescope. Mating the two seems like a good idea, and I've seen D100 images on the 'net, but can't figure out how to set up the camera. I've get the T-adaptor, but since the D100 has to have a "CPU" lens for it's metering, it appears I lose all ability, even in manual mode, to set things such as aperture and exposure time. I'm sure I'm missing something here -- can anyone offer suggestions? Thanks! Obviously you can't set the aperture with the D100 on the G8, but you can certainly adjust the shutter speed by setting the mode to "M" and turning the thumb dial at the back of the camera (sorry, I don't remember Nikon's name for the front and rear dials). Don't forget to turn on the anti-shock feature -- the camera pauses for a moment after the mirror flips up to let the vibration that that action might cause die down, then it takes the exposure. Turn this back off before regular photography, or it'll drive you nuts. You also need to use the self timer for astrophotography. The D100 is a great camera -- mine paid for itself in no time with occasional commercial work. It isn't good for long-exposure astrophotography because the chip is quite noisy. It is excellent for lunar and planetary photography, however. I do my lunar and planetary photography with the "hat trick." I set the self-timer for eight seconds and I set the shutter speed for about five seconds. While the timer is ticking down I position a piece of flat black mounting board in front of the telescope. About two seconds after the shutter opens (and all vibrations have ended) I move the board away quickly, then back again -- the board serves as my shutter. This eliminates all blur from camera vibration. You won't know what your shutter speed is, and you'll get a number of over- or under-exposed images for each good exposure, but digital film is cheap. My results are at my non-commercial, family-safe site http://www.davidillig.com/astronomy.shtml. Happy shooting! Davoud -- usenet *at* davidillig dawt com |
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