Blaine Gibby:
I bought the skywatcher flavor because it was designed for the scope and I didn’t want to deal with any back focus issues. Very happy with it, although if you pixel peep to extreme there is a small amount of coma at a few of the corners. But I would imagine that is the case for any reducer. I never take it off.
Blaine Gibby:
I bought the skywatcher flavor because it was designed for the scope and I didn’t want to deal with any back focus issues. Very happy with it, although if you pixel peep to extreme there is a small amount of coma at a few of the corners. But I would imagine that is the case for any reducer. I never take it off.
Is the coma only visible if using full frame cameras or can it still be seen with apsc size sensors?
Jeff Horn:
Just my my 0.77x reducer back on last night after a year of the 1x flattener. Didn't notice any vignetting on my 2600mm subs, but will examine integration this weekend.
Blaine Gibby:Blaine Gibby:
I bought the skywatcher flavor because it was designed for the scope and I didn’t want to deal with any back focus issues. Very happy with it, although if you pixel peep to extreme there is a small amount of coma at a few of the corners. But I would imagine that is the case for any reducer. I never take it off.
Is the coma only visible if using full frame cameras or can it still be seen with apsc size sensors?
It’s barely visible with an APSC sensor, I use an ASI2600. In my opinion it’s worth the trade off for the faster optics because I just don’t have many clear nights. I would imagine some copies are better than others.
Stuart Taylor:Blaine Gibby:Blaine Gibby:
I bought the skywatcher flavor because it was designed for the scope and I didn’t want to deal with any back focus issues. Very happy with it, although if you pixel peep to extreme there is a small amount of coma at a few of the corners. But I would imagine that is the case for any reducer. I never take it off.
Is the coma only visible if using full frame cameras or can it still be seen with apsc size sensors?
It’s barely visible with an APSC sensor, I use an ASI2600. In my opinion it’s worth the trade off for the faster optics because I just don’t have many clear nights. I would imagine some copies are better than others.
I too use an APS-C sensor (ASI2600) and I am not aware of any vignetting (judging by my flats)