Target M27 Dumbbell, shooting at 2182mm focal length
Atik 484L+mono at 5.4 pixels
Step setting calculated at 18 steps.
Autofocus data points 9.
Shooting in OIII with 25sec for autofocus exposure.
There was a bit more than 3C temp drop during the session.
Autofocus was set before sequence start, at every 6 images (equals 60 minutes) and every 1C temp change.
- The focuser started out (or finished) around 29650 at the 8:49:09pm initial autofocus. It appeared to finish at 29828 at 12:50:31 this morning. Step increases are consistent with falling temps.
- Being my first trial, there is a bit of starting and stopping at the beginning of the log file (my fault).
- I did a manual focus (with B-mask) prior to beginning the sequence.
a) Can the “V” Curve generated during focus run be redone for review?
b) My autofocus runs did not create the victory “V” curve. What should I take from that?
c) Log makes reference to “old autofocus method”.What is the “old autofocus” method?
d) In spite of what may be unsuccessful focus attemps, my images remained reasonably focused (and very similar) throughout the almost 4hr session. Any thoughts on that?
Here are a couple of screen shots of the initial focus and one later in the evening:
Here is the DropBox link to the SGPro log file, the PHD2 log file, and the last autofocus folder:
Thanks for your patience and help.