compatability

[starry spud]

Hi guys.

I am new to astro photography and have lots of questions on the subject but the first one is this. when I bought my used meade lx90 8" the gentleman who sold it to me very generously threw in a celestron f6.3 focal corrector, can anyone advise me are there any compatability issues when using a celestron corrector with a meade scope.

[Ruud]

Meade owners have often opted for the Celestron f6.3 reducer/corrector. Like the previous owner of your scope. I've heard that they are optically the same. Don't worry and enjoy the telescope!

[starry spud]

thanks for that advice, I will indeed enjoy the next time I get the chance.

[Davey-T]

They're interchangeable but not designed for the ACF scopes.

Dave 

[starry spud]

33 minutes ago, Davey-T said:

They're interchangeable but not designed for the ACF scopes.

Dave 

thanks for that advice, I will indeed enjoy the next time I get the chance.

[starry spud]

Hi Dave,thanks for your reply but please excuse my ignorance what is an ACF scope.

[starry spud]

27 minutes ago, starry spud said:

Hi Dave,thanks for your reply but please excuse my ignorance what is an ACF scope.

Hi dave no need to answer that I just realised it means advanced coma free Duuuuuur.

[Davey-T]

The ACF Meade SCTs were introduced a few years ago ( will find out when exactly ) for astrophotography, the old models had a curved field and needed the 6.3 flattener / reducer to avoid misshapen stars at the edges of an image.

If you use the 6.3 f/r on the ACF models it can turn the flat field curved so defeating the object.

I have however used the old 6.3 f/r on my flat field SCT with Atik314 CCD so I think it may depend on how big your imaging sensor is.

Dave

 

[iapa]

You may need to use an extender if using the 0.63 FR/CC.

The spec of this says you should have 110mm between the exit of the FR/C and the camera sensor.

I've still to get an extender to use with mine.