Nexstar 6SE imaging diagonal help

[icebergahed]

Hello all

So i have a 450d canon which im using to take my images but have seen lots of images of peoples setups where they remove the diagonal off the back.

Should i be doing the same? Is there a difference in the image  without?

Its just that the camera screen and buttons are better located with the diagonal on.

I have the f6.3 focal reducer also. Not sure if that would makes a difference.

 

Thank you

[Cornelius Varley]

It is advisable to remove the diagonal and keep the imaging path as straight as possible because a diagonal will degrade the image quality. The 450d has liveview so you could control and view live images through APT or Canon Utilities.

[Peter Drew]

The further back the camera sensor is from the native focal point of the SCT, the refocusing will increase the effective focal length.

[newbie alert]

Depends on what you're imaging..a diagonal doesn't degrade a image that you can see..only difference is it's the other way up

[icebergahed]

9 minutes ago, newbie alert said:

Depends on what you're imaging..a diagonal doesn't degrade a image that you can see..only difference is it's the other way up

Ive just started taking images. Heres my first one which was low on the horizon. It seems a little fuzzy. I need to try again when higher in the sky. Its m3? something.

[Cornelius Varley]

14 minutes ago, newbie alert said:

Depends on what you're imaging..a diagonal doesn't degrade a image that you can see..only difference is it's the other way up

Unless you are using a dielectric diagonal with 99% reflectivity then the amount of light reaching the sensor has been reduced and degraded. Keeping the image path straight reduces all unnecessary air/glass interfaces. 

[newbie alert]

M27..ring neb