Coma corrector

[Dave Wall]

Just wondering got mine now, would you use this for all astrophotography work.

[lensman57]

Hi Dave,

First, many thanks for your nice comment about the NGC891. You need the coma corrector if you use either a DSLR or a large CCD chip for imaging as the coma free zone of the 200P is around 10mm . If you use a small chipped webcam for planetary it may not be necessary if the chip is the usual 1/4"~1/3" format.

Regards,

A.G

[Leveye]

Always for astrophotography unless your going for something abstract maybe?

[Dave Wall]

Thanks A.G and Leveye the reason I asked was because I was not sure if I would still need the T ring.