I had this corrector already in the 1990s on an 10" f/4.5, but later sold it. It was good back then. Then I bought another one around 2012, and again it worked well. Actually I had another one which failed the pleiades test - I got ghosting, showing up as red blotches in the field. The Plejades are a very good test due to the bright stars scattered around the field. I then swapped this other brand against the Baader, and no ghosting at all. So definitely recommended!

Bought this for my Skywatcher 200pds, i went straight to a back focus of 55mm.
Corrected instantly 🙂, no messing about.
Delivered by Flo within 5 working days, with everything going on at the moment that's pretty good 👍

With my f/5 Newtonian and a camera with an APC-S sensor, this 'reduces' coma. It does not correct it. The same was true for the Mark-II. I can see no discernible difference between the MK-III and the MK-II, despite experimenting with spacing between MPCC and sensor.
This Mark-III allows you to remove the T-thread fitting and open up the larger M48 aperture, which may be advantageous for some. The instructions that are included are very poor and refer to red and yellow boxes, and yet the instructions are in black and white!

My first experiences are very positive. The coma did disappear perfectly. The Image is bright and chrisp without any colour deviations. Highly recommended.

Is there a new version of MPCC coming soon? I read there will be a revised version of this coma corrector. Is this the reason why it is largely unavailable in many shops?

FLO Response: We understand the the original factory was washed away in the Japanese tsunami. We will be happy if Baader re-launch an identical product but we won't be surprised if it has a slightly different specification. HTH

When looking for a coma corrector for my f4.5 flextube, I considered this one from Baader, the skywatcher one and TeleVue's Parracor.

For me this one hits the mark perfectly being very good optically and being only a few pounds more expensive than the Skywatcher one.

I cannot compare the performance of the others but this one is very nice and does what it says on the tin. Baader products have a knack of hitting the right mark and this is yet another example.

So thanks Baader for another nice Astro product.

If you're new to astrophotography and you've noticed that the stars in your pictures look elongated, almost like they're stretched out towards the edges then you need this coma corrector.

I'm using one in a 6" Newtonian (150P) and I love it. It corrects the coma very well to the point where it is not easily discernible even when zoomed into the raw data.

If you have a DSLR and a Newtonian telescope, you will benefit from one of these Baader Coma Correctors.