Quote:
Originally Posted by Neil
 Great effort Tim, I have just bought a 70D, as yet untried at AP, any advice? clear skies.  |
Neil
For mine, the best feature of the 70D for astrophotography is the built-in wifi. It lets me use the EOS Remote software on a phone or tablet to run the exposures without having to touch the camera.
My advice is to build a BIG library of dark frames - the chip is noisy at high temperatures and in summer it heats up a lot - I'm often seeing the camera reporting 30-35 degrees C during an hour-long session when ambient is around 20 degrees. If you look closely at my pic, you will see the residual thermal noise signature resulting from not having a good master dark.
The camera's ISO response seems a but sharp (if you ramp up the ISO, the results get coarse very quickly) - but that could be a result of my ignorance about controlling it.
It is a fairly heavy camera, and I find I have to pay a lot of attention to balancing the telescope when it is fitted.
The camera has the usual IR filter fitted, so a lot of detail in deep sky objects never makes it to the chip. But since I use it mainly for daylight photography, I live with it. I think the 70D is a great capability/price compromise between the lower-end Canons and the pro-grade units. Thoroughly recommend it.