Firstly I'm pretty new to astro photography, so advice from those
with any experience is great.
Tonight I whacked the 100mm macro on the 7D and put them on
the EQ6Pro. I thought this lens should be a very good astro lens
due to it's reputation as a terrestrial lens.
I was suprised by the result below. This lens is coma city!
Does anyone think there is a reason for this? It's as good a focus
as I could get using Live View zoomed in x10.
The image is a 100% crop from just above centre, but it's the same
all over. 2 mins @ f/4, ISO1600.
Edit - The second image is the same area, same camera and exposure
but using the EF 70-200 f/4L IS set to 100mm. A much better image
than the macro. 2 mins @ f/4 (wide open on this lens), ISO 1600.
Cheers,
Jason.
