6 replies to this topic

[joelin]

How does the Edge 8 + 0.7x reducer compare with the C8 + f/6.3 corrector?

[jfrech14]

If you mean the standard rear cell 6.3 reducer/corrector... the edge HD is far beyond that. If you mean a corrector from starizona or something... then it becomes more of a fair fight. The edge optics are amazing and it doesn't go unnoticed. 

[rmollise]

Visually, there's not much difference. The stars at the edge of the field with the Edge and f/7 reducer are noticeably better, but it is not like night and day. OTOH, the field is a little wider with the Jim Riffle designed Celestron reducer/corrector (which IMHO is better visually than its competition), but it is not like night and day.

 

For the average person, a standard SCT and the 6.3 r/c still makes a lot of sense.

[joelin]

How about for imaging?

[jfrech14]

My comment was for imaging, which is why people typically buy the edge scopes, even though they're visually great too. Imaging... I can't help but to say I'm team edge. I've owned 2 edges, 2 lx200 and 1 cpc and the edge is perfect. I've had issues with the reducer and my 8300 sensor because the backfocus is really critical when the reducer is in. But it's still amazing. I just expected it to be a bit easier and I was pixel peeping. I never got anywhere near as nice of a field on the normal scts, especially with the small rear cell reducers. My friend is getting the starizona reducer for his c11 so I'll soon see how well it corrects. But, I expect it to be good as well

Edited by jfrech14, 14 September 2018 - 05:35 PM.

[Astrojedi]

In my experience for both imaging and visual the EdgeHD is a much better system. The cooling vents and mirror locks are also really useful.

[junomike]

Although I didn't care for either (visually), I found the EdgeHD/0.7X combo better ad of course more $$$$.