michael uhlig - 2024-03-29

i just came across astap and downloaded some images.
a) what is the difference between octagon and triangle ?
b) i noticed with various images throughout an evening that there is a huge difference of "no tilt" to "extreme til and everything in between. what seems to be the issue?
2600 mc pro screwed on to fra400
the issue persists from 60 sec to 120, to 180 to 300 sec exposure.