Thread
:
A question of exposure time
View Single Post
#
4
20-04-2010, 01:26 PM
bojan
amateur
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 6,943
For any extended object, lower the F-number, the better.
F5.6 is 4x better than F11: On the image the stars (point sources of light) will look the same, the nebuale will be 4x brighter.
bojan
View Public Profile
Find all posts by bojan