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barbulo

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Posts posted by barbulo

  1. I'm not in favor of adding a camera support as it can be a source of induced tilt in this tilt-sensitive setup. Unless you manage to place and hold the sensor preciesly square to the optical train, you'll face tilt issues.

    In my view, the best solution is to place the support somewhere between the lens and the camera.

  2. 4 hours ago, Elp said:

    You could try one of the cheaper ones FLO sell, that one seems expensive, you'd also have to consider the backspacing distance but if you're using a canon lens with a simple ring adaptor (not the filter drawer types) you should have plenty of space.

    I use the M48 lens adapter so I believe I'll have enough space for the tilt adjuster. I point at that one, even though there are cheaper, because the adjusting screws are on its side instead of the front.

  3. Hi and welcome to SGL. 

    According to my experience, it's difficult to find a SW mount to have the polar scope perfectly squared. You can try to adjust it, but I don't recommend it. I prefer to compensate that inclination with a few steps (less than 1 minute of your time). 

    I proceed as follows: place Polaris in the center of the reticle, then move one axis (AZ is normally easier) till the star is out of the circles and then rotate the RA axis to place the horizontal line over Polaris (vertical line if you chose ALT instead of AZ). After these steps you should have your reticle squared regardless the position of the RA shaft, and that 5deg inclination you mentioned should be compensated. Now you can proceed with the polar alignment routine placing Polaris in its right place in the reticle.

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