M20 Neb at F10 or F6.3

[Striker (Tony)]

I know I have posted my M20 at F10 not long ago but I need to experiment....I want to see the difference from F10 to F6.3.

I have posted both images as I did the M20 tonight at F6.3 instead of my previous at F10.

FL approx 1880mm instead of 2800mm

Both images are of around 20-30 x 30 second unguided exposures stacked.
I wont go into the details as you all know what I use.

The reason for this post is to ask you what your thoughts between the Version F10 to F6.3.

I prefer the F6.3 version.....maybe I may have to try my other Focal reducer at 3.3......lol

Please pick one.

[davidpretorius]

one on the right

[Rodstar (Rod)]

Tony, the F6.3 image is definitely sharper. Both nice, though.

[davidpretorius]

which is which, i may have the wrong head screwed on tonight

[acropolite (Phil)]

Dave the f6.3 is the one on the right, wider field....I prefer the F6.3 image as well, nice work BTW, gotta get me a focal reducer now.....

[RB (Andrew)]

Tony,

The F6.3 definitely. It's more pleasing to the eye I think.
Excellent job.

Andrew

[iceman (Mike)]

I'm sure you'll want to use both from time to time, and it will depend on the object. For M20, I prefer the wider view @ F6.3

[atalas]

Focal Ratio is king Tony !

Louie