Comments: Imaged Saturn September 27th targeting a CM transit of the long lived AV. I had created an ephemeris based on the L3 for the AV measured from my very good August 30th and September 11th data. That was only over 12 days which gave a L3 drift rate of –0.175 degrees/day. I applied that drift rate through to December which predicted a CM transit for September 27th at 12:07 UTC with the L3 being 191 degrees. Since then I have processed the HST OPAL data from Sept 21st and 22nd where the AV is well resolved in IR and also RGB on Sept 22nd. The HST OPAL IR data provided a very good L3 measurement. I have created a new ephemeris working with the drift from my August 30th data through to the HST OPAL data of September 22nd so over 23 days which gives a drift of –0.2696 degrees/day. I used the HST OPAL IR L3 as the reference L3 and framed the ephemeris from August through to December. The updated ephemeris predicted a CM transit for September 27th at 12:03 UTC with the L3 being 189 degrees. These data from September 27th were captured based on the prediction of my earlier ephemeris so I have an IR run centered on that predicted CM transit time of 12:07 UTC with IR data runs also centered 30 minutes prior and post. These data were captured in variable seeing and the IR data run centered on 12:07 UTC does appear to have the AV faintly resolved however it does not show up in the data runs centered 30 minutes either side so it may be an artefact. The data really does need to be very good to resolve AV. From these data I measure a faint bright spot in the NNTeZ at approx Lat+65.5 L3 199.3 the possible AV marked in the 12:07 UTC IR data is at approx Lat+41.6 L3 189.5

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Observation 1
Feature(s)	N/A
Filter(s)	ir
Date	2022-09-27 12:37:00
Julian day	2459850.0256944443
System I	21.143637°
System II	N/A
System III	208.82985°
Illumination	99.9%
Phase angle	4.099999904632568°
Solar longitude	29.3°
Eq. diameter	18.14″
Derotation	0.0 min