Ok, the focuser. Much of the delay in my order was the focuser. Eduard designed - and machined - the focuser himself. (A man of many talents it seems.)
The website says something to the effect of everything being done in-house (save the paint and anodizing) for end-to-end control and they appear to be serious about that.
As the months went by, I was asking myself why Agema did not outsource this to Moonlight or FeatherTouch so they could focus on producing more objective lenses. In the overall scheme of things, I would think that optical talent is a much more rare talent than machinist talent (no disrespect to any machinists out there).
The good news is that design is done, and subsequent runs should not incur that particular delay.
And seeing the end result, it compares very favorably to the FeatherTouch and Astro-Physics focusers I currently have. Very favorably indeed. Earlier I posted a photo of a side view, showing the Agema name plate and serial number, so I'll skip that view here, other than to say the very small knob is the focuser brake knob.
The bottom view shows that, and more. The most obvious feature is the "Captains Wheel". Just like Takahashi uses on the Epsilon, this locks down the focuser rotation. A short throw lock, very nice feel and positive action. Extremely secure, even with the long moment arm of my afocal NV load (2.5" extension tube, 55 Plossl, and NV device, about 11" worth).
The bracket in the photo is a Lumicon GLP mount, not part of the Agema package. Moving inwards from the brake knob:
- The four outside symmetrical screws attach the pinion mechanism to the body of the focuser. Presumably the pinion mechanism is reversible for southpaws.
- The two smaller screws right edge and just off center are for attaching an electronic focuser (6-32 thread).
- The slotted screw is a drawtube radial backlash compensator.
- And of course, what use is a drawtube radial backlash compensator without a backlash compensator set screw? Not visible in this shot, but is on the vertical side that faces rearward.
- According to the documentation, the last hole is for a friction regulator. This would be different from the friction knob on the top of the focuser, but I am not certain how so.
Note that this is a 3.4" focuser, and the 2" flange is removable to thread on the yet un-released Agema field flattener. No word on that availability.
Edited by Jeff Morgan, 14 June 2021 - 11:19 PM.