Quote:
Originally Posted by Astroman
Thaks guys,
Still trying to work out why Io is a line and not resolved as a star or disk... might be the stacking process maybe?
|
Hi Andrew
The “elongated” Io is likely due to the orbital motion of the moon during the image capture process. I once recorded a 90 sec AVI and Io was elongated and I could just detect a smearing of finer details on the disc of Jupiter due to the rapid rotation of the planet.
I understand that the more advanced planetary astophotographers use an application called WinJUPOS to allow them to “de-rotate” long AVI’s so that the surface features are not smeared.
Cheers
Dennis.