Hey all you fine folks, last night I went out with a friend to a dark sky and shot some more deep space images. Shown here is the Andromeda Galaxy (M31) and the Pliades (M45) photographed with my D700 & NO NOISE REDUCTION WAS USED for these images. Both were single 7 minute exposures at ISO 400 and there is no noise at all...AWESOME! The scope used was a BORG Astrograph, a 4-inch ED refractor at a FL of 390mm f/4. I tracked the scope on my Celestron mount. Used the MC-36 remote timer for the 7min exp. The fact that the outside temp was aroung 40º kept the CMOS cold and thus keeping noise away. Enjoy...
WOW! That first image is breathtaking! Reminds me of how tiny we are in this unimaginably enormous universe! Just imagine - a lot of those tiny dots could be galaxies - or entire collections of galaxies!
Really nice! would it be possible to have a picture of your setup? i'm wondering how big the tracking mount is to handle the weight of the dslr + scope
thanks for sharing!
Paul.K wrote:
How do the stars not move during those 7 minutes? Especially since you are so far zoomed in?
Great pictures, btw.
Tracking mount - it moves a pre-calculated amount to compensate for the rotation of the earth and thus keeping the camera pointed exactly at the target.
poncho_morales wrote:
Really nice! would it be possible to have a picture of your setup? i'm wondering how big the tracking mount is to handle the weight of the dslr + scope
thanks for sharing!
sure, here is an older image of my setup. It is still the same today, just a better camera. If you decide to buy one, PM me and I will help you select one.
How much of a difference does it make if you are in the city, as opposed to the countryside? Those shots seem to have little or no light contamination. Is there some sort of common mode subtraction used?
Wow...This is very clean. No NR?! Great set.