Using a L-Pro/Extreme on a 533MC Pro

[Todo43 (Lachlan)]

Hi Everyone,

Am thinking of buying a ASI533MC Pro. Will be using this with a range of lenses such as a canon lens and a few other telescopes so I will need a Canon adapter. Am then looking to maybe in the future move to getting a filter such as the L-Pro or L-Extreme. If I am to use it with the Canon lens, I will need to buy a filter draw? If so, will it affect the focus on the camera?

[Startrek (Martin)]

Originally Posted by Todo43

Hi Everyone,

Am thinking of buying a ASI533MC Pro. Will be using this with a range of lenses such as a canon lens and a few other telescopes so I will need a Canon adapter. Am then looking to maybe in the future move to getting a filter such as the L-Pro or L-Extreme. If I am to use it with the Canon lens, I will need to buy a filter draw? If so, will it affect the focus on the camera?

When I use an L Extreme with my 2600 MC in my newts I have to refocus slightly
I bought a ZWO filter drawer which is handy swapping filters , no need to pull the camera out of the focuser
Cheers
Martin

[AdamJL]

Yes it impacts backfocus less than 1mm or so. The rule is generally 1/3 the thickness of the filter. The L-Extreme is about 1.8mm thick.