New focuser: short, stubby, and strong

[michael.h.f.wilkinson]

I just received a new focuser for my APM 80 mm triplet, to replace the standard Crayford. The Crayford was OK, but a bit too long to let my cameras come to focus with the 0.6x focal reducer. The new one can handle a much larger load (5 kg), and is 25 mm shorter.

It really feels better made than the old one. It also allows easy attachment of a motor focus unit. My filter-switch diagonal should now also reach focus with the new set-up. I will now see if I can adapt the old one to the ST80. 

As expected, clouds, wind, and rain accompany the arrival of the focuser.

 

[Stu]

Looks very solid Michael. Is this one a Crayford too, or R&P?

[michael.h.f.wilkinson]

21 minutes ago, Stu said:

Looks very solid Michael. Is this one a Crayford too, or R&P?

It is an improved Crayford, with steel bearing surfaces (like a Baader Steeltrack). All R&P refractor focusers I could find were too long.

[Stu]

Nice. It does look a little like a Steeltrack, should be very good.

[michael.h.f.wilkinson]

Just to add a shot with the focuser extended (not fully)

I also like the thread that allows more stable attachment of imaging gear.

[JamesF]

5 hours ago, Stu said:

Nice. It does look a little like a Steeltrack, should be very good.

I was thinking that, too.  The motor drive arrangement in particular looks near identical to the Baader mechanism.  I really liked the old Steeltrak design, but the Diamond version is a struggle for me to justify cost-wise.  I may well look at one of these next time I'm after an upgrade though.

Any chance of a pic of the underside of the focuser, Michael?

James

[michael.h.f.wilkinson]

4 hours ago, JamesF said:

...

Any chance of a pic of the underside of the focuser, Michael?

James

Here it is:

It is not a very expensive item; I got it for €199

[JamesF]

Thank you.  It does appear very nicely put together all round.

James