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Showing posts from June, 2021

CN10 M86 Reloaded plus Western Veil nebula and M101

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Goal: Grab additional frames of M86 on the CN10... work to try and reduce coma with the existing rack & pinon focuser. Set up around 8:45...  Great skies...zero clouds...no moom (set at 8:30pm)...warn temps (80's)...meteoblue suggests good seeing (green).   Started focusing and drift alignment around 9:45.  Was unable to catch Polaris through the trees with the polar scope.  :<  Leveled the mount and eyeballed north.  Initial drift alignment showed ~85' off (DEC line drifting down).  Focused on Vindemiatrix (Epsilon Virginis) and after tightening the focus lock, tilted the focus tube downwards.  Adjusted azimuth by loosing on the right (east)...and got to 62".  Second adjustment: ~12". Third azimuth adjustment: -1.2".  Internal guider calibrated w/o problem and showed initial RMS of ~2" (with variation across a line spanning RA). Generated two jobs in the Indi/Ekos scheduler...first M86 (3x40 lights) and then HD 197912 (the Western Veil Nebula).  Afte