coma corrector

[suma126]

HI were can i buy a cheap 2" INCH coma corrector for a newtiona telescope.

[MarkN]

G'day Shane,

If you're thinking of the Baader unit you should know that they require adapters for different applications. The Televue Paracorr is the goods but costs. Try for a used one if you can't manage a newie.

In my opinion, they are worth every cent particularly for focal ratios of 4.5 and faster. Definite improvements even at F5.

Mark.

[Gama]

Makes no difference where you use the Baader MPCC, its alwas 55mm from last optical surface.
Even still, if out by a bit, viewing, its still makes points of light to stars on the edge. I had it on my 22" f4.5 with great results.
Both good choices, but the Parracor adds to the f ratio, wheras the Baader is at x1.

Theo

[Archy]

Andrews