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Europa Shadow Transit - NOW!

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#1 fcathell

fcathell

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Posted 18 September 2019 - 08:56 PM

Just past central meridian as of 0150 UTC. In Northern Temperate Zone.  Very tiny. Europa is just west of Jupiter. Some turbulence due to low altitude, but good viewing for the most part.  150 Mak at 300X (6mm eyepiece) on Twilight 1.

 

FC


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#2 Ken Watts

Ken Watts

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Posted 18 September 2019 - 10:00 PM

Darn, feeling under the weather... fcathell, please give us a report.



#3 fcathell

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Posted 18 September 2019 - 10:35 PM

Followed the transit until it was almost at the edge (some minutes ago).  Located in the white NTZ. Turbulence increased due to low altitude but the tiny shadow was in there about 60% of the time. Went to 160X and could still make out the shadow, but unless you knew it was there it would be easy to miss. Red Spot was just starting to show on the eastern limb but no details obviously. With some clouds moving in from the south and Jup so low I quit about 0310 UTC. I think Jupiter  is just about finished for the season. I found it just after sundown with binoculars and started watching the transit in the twilight while Jupiter was higher.

 

One comment for other Twilight 1 mount users: It does appear to be true that if you unbolt the altitude (mounting) arm from the base hub and rotate it clockwise by 90* and re-bolt so that the az slo-mo control is not parallel to the altitude arm, there appears to be less vibration flexure in the arm/hub assembly. Not sure why. It also keeps the az slo-mo cable/knob from hitting the scope when aimed at high angles.

 

Frank



#4 Ken Watts

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Posted 19 September 2019 - 08:57 AM

Thank you for the report!




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