天王星 ALPO-Japan Latest

Uranus Image 2015/08/14(UT)

Milika-Nicholas
Milika-Nicholas

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Here is the first image from us of Uranus in iR610nm for this current
apparition - we were lucky to get a break in the clouds but the onscreen
image kept fluctuating in brightness due to constant clouds passing through
during capture.

This image really is testimony to the ASI224MC colour camera's capabilities:
using an iR610nm filter at f22 we easily picked up the banding on Uranus'
disk in seeing that was only "reasonable" & poor transparency...these
conditions are indicated by the fact that out of over 20,000 frames we could
only stack 803 frames when selecting a 50% cut-off value in AS!2.

[Milika-Nicholas:Adelaide,South Australia]

ALPO-Japan Latest Uranus Section	2015/08/21
	2015/08/11