Milky Way photograph, and a tale of lens covers...
The Tamron lens needs to be focussed using the "live view" function of my camera (Canon EOS 450D), as it has no "hard stop" at infinity, like most modern lenses.
I ran into trouble though. Pointed it to Arcturus but no star to be seen on the screen whatever I tried. Dito with Vega, Deneb. Frustration! Then worry. Was my camera malfunctioning?!?
I looked up. And saw a bright IGS 1B majestically sail accross the sky. Grrr!
I took the camera again. And then the quarter finally fel....
Yep: forgotten to take off the lens cover....
* bangs head against desk repeatedly *
Later that evening I made a series of images with the 450D camera + Tamron lens piggyback on my ETX-70 telescope. 69 frames of 10 second exposure each at 800 ISO and 17mm/F2.8 were stacked into this image of the Milky Way in Cygnus, mimicking a 11.5 minute exposure:
Difficult to believe for me too that this was obtained right from a town center, but nevertheless it is true! Stacking large numbers of short exposure images makes this possible.
Labels: milky way