Celestron C8 questions?

[emadmoussa]

I noticed that it usually comes with a 1.25" diagonal. Can the back hole be unscrewed to become 2"..you know to accommodate 2" diagonal, 2" eyepieces or even a focuser?

[Naemeth]

I believe it comes with a 1.25" visual back, but you may be able to upgrade that to a 2" visual back.

[emadmoussa]

I believe it comes with a 1.25" visual back, but you may be able to upgrade that to a 2" visual back.

Mm...if so, then it shouldn't be an issue.

[Naemeth]

Mm...if so, then it shouldn't be an issue.

No, it shouldn't. I believe the larger models come with a 2" visual back, did your C11 come with a 2" visual back?

[emadmoussa]

No, it shouldn't. I believe the larger models come with a 2" visual back, did your C11 come with a 2" visual back?

Yes it did.

[emadmoussa]

I might have the chance to get my hands on a C8 soon. I'm wondering how it performs on DSOs and what to expect otherwise.

[Naemeth]

Yes it did.

If you're getting it new I'm sure you could ask FLO which it uses, and if it has the 1.25" visual back you could ask for the 2" one instead .

An 8" should perform nicely, exactly in-between your 6" frac which it is replacing and your 10" dob

[emadmoussa]

If you're getting it new I'm sure you could ask FLO which it uses, and if it has the 1.25" visual back you could ask for the 2" one instead .

Swapping with a second hand barely unused one.

[Clockwork_Orange]

Hi emad

I upgraded my C8 to a revelation 10-1 focuser. Just unscrewed the 1.25 visual back and fitted the revelation now I can use either 1.25 or 2" and i find focusing a lot easier I might add.

Regards

John

[DoctorD]

Hi

There are also a number of SCT to 2" diagonals for additional security if you are planning on hanging big EP's on the back.

HTH

Paul

[CodnorPaul]

I replaced my visual back with a 2" Celestron XLT diagonal - just screws straight onto the back of my C8

[michael.h.f.wilkinson]

I prefer using a push-fit 2" diagonal with a 2" visual back that I got for a few tenners. The advantage is that I can use the diagonals I have in my SCT and my 80mm APO. Furthermore, it allows me to fit a Vixen flip-mirror to the scope. I can now fit either a 2" Amici prism or the Denkmeier filter-switch diagonal to the scope very easily. Adding a 2" visual back was the best upgrade I made to the scope.

[Tinker1947]

My C11 came with a 1.25 Diagonal purchased in the last couple of months, have changed to a Revelation 2", upgraded the stock focuser with a Feathertouch would be my best improvement, last bit of kit a Astrozap Dew Shield with a built in heater worked a treat last time i used the scope... 

[emadmoussa]

My C11 came with a 1.25 Diagonal purchased in the last couple of months, have changed to a Revelation 2", upgraded the stock focuser with a Feathertouch would be my best improvement, last bit of kit a Astrozap Dew Shield with a built in heater worked a treat last time i used the scope... 

With the C11 the first thing I realized was the need for a smoother focuser. I bought the revelation SuperFocus and that made a lot of difference. But mine came with a 2" visual back...

[Tinker1947]

I thought about a focuser that just attached to the back plate so the scope would still have the original plus the add-on, then decided the feathertouch would be nice plus not losing and focal distance (inward travel)  through the new focuser. the feathertouch from FLO is cheaper than the add-on Badder steeltrack, less than 5 minutes to fit......

[Colin A]

I just got myself a 2nd hand C8 too and was looking to do the same thing.  Do i have to change the backing plate or can i just fit the Celestron 2" Diagonal?

[CodnorPaul]

Just fit the Celestron diagonal - nothing to change at all

[Colin A]

Thanks CodnorPaul.