Adapter for ASI294 and SW Esprit 100 scope

[Astrokev]

Hi

I use the dedicated field flattener for my Esprit 100. The back focus distance to the sensor of my ASI294 must be 63mm. The sensor itself is 6.5mm from the front of the camera body, so I need an adapter of 56.5mm.

Is there anyone in SGL land that has this combo and can advise on a suitable adapter or adapters for this combo, or suggest an alternative method of attaching the camera? I won't be using a filter wheel.

I can't find a single adapter of this size, not surprisingly, so am probably looking at multiple rings to make up this distance.

The fittings need to M66 female for the flattener and M42 female on the camera.

Thanks for any help

[Laurin Dave]

Do you not have the 8mm thick M66 to M48 DSLR adapter? This is usually screwed onto the flattener and takes it to 55mm required backfocus and ZWO cameras come with the necessary extension tubes to give 55m

[Astrokev]

5 hours ago, Laurin Dave said:

Do you not have the 8mm thick M66 to M48 DSLR adapter? This is usually screwed onto the flattener and takes it to 55mm required backfocus and ZWO cameras come with the necessary extension tubes to give 55m

Thanks. Yes, I've got the 8mm adapter. I'd considered using this but I've not seen the extension tubes you mention. I'll have a browse to see if I can find any that add up to 55mm with the required M48 and M42 female fittings.  Have you seen these?

[Laurin Dave]

If new it comes with 11 mm and 21 mm T2 spacers and a 16.5mm T2 to m48 spacer which with the 6.5mm camera back focus gives 55 mm