Best diagonal for imaging?

[CharlesS]

Does any company make a click-on or screw-on diagonal for a 1.25" back? I know such a diagonal is available for a 2" back. From what I understand such a diagonal gives more rigidity to the optical train.

Thanks,

-Charles

Edited April 11, 2023 by CharlesS

[bosun21]

For imaging you are better off without a diagonal in the light train. If you must then you should go for a screw on diagonal for rigidity.

[Louis D]

Is there a particular circumstance forcing you to use a diagonal in your imaging train?

[CharlesS]

16 hours ago, bosun21 said:

For imaging you are better off without a diagonal in the light train. If you must then you should go for a screw on diagonal for rigidity.

I don't think there are 1.25 diagonals available commercially.

[CharlesS]

12 hours ago, Louis D said:

Is there a particular circumstance forcing you to use a diagonal in your imaging train?

That's a good question, Louis. I shall inquire at the solar imaging forum.

-Charles

[Stu]

1 hour ago, CharlesS said:

That's a good question, Louis. I shall inquire at the solar imaging forum.

-Charles

What sort of scope are you using Charles? These systems work in a number of different ways and it depends if you are observing white light or Ha.

[michael.h.f.wilkinson]

For solar, the only diagonal I use is a Herschel wedge. Both my Ca-K module and H-alpha filter system are straight-through types.