EvoGuide with filters?

[JonHigh]

Hi all. Well after doing a bit of research it would seem that I can’t use my 26c TEC camera with a filter when using the SW FF due to the back focus being 17.5mm. Is there any kind of work around so I can attach my narrowband filters? Was thinking about securing it on the front of the Evoguide somehow but that might cause serious vignetting unless I use Region of Interest but then that would negate the wide field I’m looking for. Can a filter go just in front of the FF?  It’s very annoying! Any suggestions would be welcomed. 

[happy-kat]

I use this

https://www.firstlightoptics.com/zwo-accessories/zwo-t2-to-125-filter-holder.html

To use 1.25 filters with my ZWO camera, though I'm using the starizona filter. Would this work for you too

 

[bosun21]

51 minutes ago, happy-kat said:

I use this

https://www.firstlightoptics.com/zwo-accessories/zwo-t2-to-125-filter-holder.html

To use 1.25 filters with my ZWO camera, though I'm using the starizona filter. Would this work for you too

 

I have also used this adapter successfully in the past.

[JonHigh]

Ah. Brilliant. Thank you. I actually have one that I use with my ASI585. I didn’t think about using it for the bigger APS sensor but I’ll give it a go and see. Nothing to lose really. 👍🏻

[The Lazy Astronomer]

A 1.25" filter will be too small for an aps-c sensor. You'd have to crop the frame to around the size of a 4/3 sensor.

I'm not aware of any work around with the SW FF - I think the only option really is the Starizona FF which has 55mm back focus.

[happy-kat]

At least it's for sale in the UK now I've seen two retailers 

[JonHigh]

Oh! I did see the Starizona FF mentioned in other posts but didn’t know the back focus distance was 55mm. So that seems to be the way to go. Thank you. 

Any idea if the quality is as good or better than the SW version? I just don’t want to crop the image really as the whole point is to have the wide field at relatively low cost. If you get where I’m coming from.   

 

Edited December 10, 2023 by JonHigh

[JonHigh]

Thanks guys. On your recommendation I decided to go for it and bought a Starizona Evo-FF from 365 Astronomy at a very good price. It arrived today so looking forward to clear skies to try it out. 👍🏻

Edited December 13, 2023 by JonHigh

[happy-kat]

I've been using that FF for well over two years now it works great for me

[JonHigh]

Nice. Very keen to get it out. Just wish these clouds would disappear!