Webcam imaging diagonal or not???

[sn00p]

Just a quickie.... using my spc900nc in my skymax127 i have been inserting it into the diagonal should i remove thhe diagonal and insert direct or carry on using the diagonal???

Many Thanks

[Psychobilly]

Provided you can get focus without the diagonal I would go without it...

Peter...

[red dwalf]

use it without the diagonal as theres no need to use one and you can lose alittle of the light, but you can use a barlow instead of the diagnoal to increase the size of the object but the filed of view is reduced, so i use a flip mirror to help get the object onto the image chip when barlowing at high levels i.e. above a 2x barlow

[sn00p]

hmmn what exactly is a flip mirror??? im off to google right now:-)

[brianb]

Provided you can get focus without the diagonal I would go without it...

And if you can't get focus, use an extension tube instead. A diagonal may not do significant harm to the image quality - if it's a good one - but it certainly won't do any good, and its presence messes up the orientation of the image.

The only possible excuse for using a diagonal when imaging is if you're using a fork mounted SCT near the zenith and the diagonal allows you to avoid having the camera foul the mount.

[sn00p]

thankls all.... I just googles the flip and yes that looks like a great time saving device... any recommendations on a flip???

[red dwalf]

i bought a true tech one from here in the for sale section, not sure if they make them anymore but they do come up for sale every now and again, these are the cheepest then you can get a meade version which is very nice and is fully adjustable for about £80 ish second hand around £120 i think new, they make two versions a 1.25" and a 2" one

[Merlin66]

The 2" vixen flip from Modern Astronomy is good for the price and has T thread connections - helpfull in the future.

Ken

[Space Cowboy]

The diagonal will add 1.5x magnification to a 2x barlow but normally I only use the barlow.

[sn00p]

thanks for the info on the diagonal :-) i didnt realise it gave x1.5