Question 1

For a NexStar 6 SE with a Canon EOS T5i, is this the correct T-adapter to get?

Accepted Answer

Yes this would work but if you are going to go this route get the one that has the 2x Barlow with it (more photo options). But the way I would go, is with the Celestron CE93633-A "Celestron T-adapter for all Schmidt-Cassegrains". You unscrew the whole eye-peace mounting system and it threads on in place of it then your camera threads on the other end (I would trust my Canon T2i with this more than the Eye-peace adapter). Then the last thing you would need is the t-ring for your camera. The "Celestron 93419 T-Ring for 35 mm Canon EOS Camera (Black)" would be exactly what you are needing.

Question 2

Can other eyepieces be attached to gain a higher magnification?

Accepted Answer

Chis... Your question is incomplete. The Universal T-Adapter has two applications. Visual observation and Astrophotography. For astrophotography, the T-Adapter attaches your camera to the visual back of the telescope and proides a focal-plane imaging system. No occular (eyepiece) is used. However the built-in Barlow lens provides an effective doubling of your telescopes focal length (i.e. a 1000mm f/10 SCT is effectively a 2000mm f/20 "lens").For visual observing, the adapter will accept any 1.25" occular. The Barlow lens is removable for either application. For eyepice-pojection astrophotography, consider the Tele-Extender Deluxe. This will allow you tu use most 1.25" occulars as a projection lens. Not that the optical speeds of this approach  is extremely slow. f/30 would be good. So it is only practical for very bright objects (planets, moon, etc.).

Question 3

With the canon adapter, will this T-adapter work on my celestron firstcope #114 reflector?  Or do I need additional pieces, such as barlow?

Accepted Answer

Mine does NOT work with the Canon EOS adapter in the 114EQ without a Barlow. It will not focus, not enough travel.But, it DOES work in my 127EQ without a Barlow. There I can get it to focus fine.I found that when you must use a Barlow to focus, it gets useless. The image is too dim and the field of view too narrow.

Question 4

Can the bottom element of this barlow be unthreaded and fit directly on to the eyepiece's 1.25" thread to get 1.5X magnification.

Accepted Answer

yes the ring with the lens element does screw into the filter thread at the bottom of the Celestron lenses and any others I have that were same thread. Park lens did not have same thread.

ASIN	B0000665V6
Additional Features	Single
Brand	Celestron
Built-In Media	Universal T-Adapter
Compatible Devices	DSLR or SLR Camera, Telescope with 1.25" focuser or eyepiece adapter
Customer Reviews	4.6 4.6 out of 5 stars (1,285)
Eye Piece Lens Description	Barlow
Finderscope	Spiegelreflex
Focus Type	Manual Focus
Global Trade Identification Number	00050234936255
Item Type Name	T-Adapter
Item Weight	0.02 Pounds
Manufacturer	Celestron Acquisition, LLC
Manufacturer Part Number	93625-CGL
Model Name	T-Adapter
Model Number	93625-CGL
Mount	Altazimuth Mount
UPC	050234936255
Unit Count	1 Count
Warranty Description	2 Years
Zoom Ratio	1

Celestron Universal Camera T Adapter, 1.25 Inch Size, Grey

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