Yes, I agree. Stopping down fast primes a stop or two is the norm. The 50 Macro Planner is quite good in that respect probably due to being a slower lens design.
For astrophotography with DSLRs the problem for me is the lack of 'red' which is filtered out by the IR filter. Canon have a partial solution to this with their D60a. Of course serious astrophotographers use dedicated monochrome astro CCD cameras and filters.
I have a permanently mounted telescope on a large equatorial mount and living down here dont really have the light pollution issues. Plenty of cloud though.
I wanted to put my camera down and help him but in the end I took the shot. In the narrow streets of the old part of Istanbul nearly all the goods are delivered this way.
For astrophotography with DSLRs the problem for me is the lack of 'red' which is filtered out by the IR filter. Canon have a partial solution to this with their D60a. Of course serious astrophotographers use dedicated monochrome astro CCD cameras and filters.
I have a permanently mounted telescope on a large equatorial mount and living down here dont really have the light pollution issues. Plenty of cloud though.
I was quite amazed with the blue colur of the two galaxies. Evidently they are full of blue hot super giant stars.