When I do a Capture&Solve with sync command, to my Rainbow Astro RST-135E, this is only partially incorporated in the alignment model in the mount. From the six alignment parameters (PA Alt/Az, RA/DEC error and DEC and RA/DEC orthogonal error), only two get updated (RA/DEC error). This is similar to doing a single star alignment using the handcontroller. But when repeating this 5 times using the hand controller, all 6 model parameters are populated and an actual alignment model is built. Repeating the process using Ekos does never populate all 6 model parameters. In fact it does not even register one single sync as a 'star alignment'.
From the forums it seems that in the ASCOM driver, you would have to select 'star alignment' when doing these syncs. Does something similar needs doing in Ekos/INDI? Or is 'star alignment' something that is not currently supported by the INDI driver? Hopefully this is just something I am doing wrong. With my 10Micron mount, doing star alignment using HC vs a sync from Ekos is doing exactly the same thing, so that was why I was hoping it would work the same way with the RST-135E.
When guiding, this is probably not so important as lack of an internal alignment model will be guided out. But I am trying to use unguided, which works reasonably well as long as the mount is well aligned and this 5-star alignment model is in place.
I think the RST-135 has the same issue. Only the first sync seems to result in any improvement in pointing accuracy. Since I plate solve and slew and then guide I never worried about it too much but this would explain it.
Borg 107FL, Astro-Tech AT130EDT; Rainbow Astro RST-135 SkyShed Pier; QHY600PH Chroma LRGBHa; QHY5-III-462C; IR Guiding WO Uniguide 50 & ASI290mm mini; ASUS PN51 ubuntu, kstars/ekos, & firecapture; Pegasus PPBA; Stellarvue Optimus + WO Redcat, Skyguider Pro RT90C, rPi4/stellarmate