Focal reducing 0.5x for ASI120mm-S camera

[Altair8389]

Hi all,

I have had problems focusing using a 0.5x focal reducer on the ASI120mm-S. This is mainly for solar imaging H-alpha with a Quark. I have the usual 1.25 inch 0.5x focuser like Svbony or Datyson from ebay. I cannot find focus if you put the reducer on the end of a standard 1.25inch camera nose piece which is about 29mm long.

 

I found this article from over 1 year ago, and wondered if this was the best solution?

The item is on 365 astronomy.

365Astronomy 0.5x Focal Reducer with C-mount for Video Astronomy

Has anyone used this for the ASI120mm-S ? I did buy the 5mm spacer rings C-mount size, but this would not accept the original 0.5x focal reducer.

 

Many thanks.

 

 

[Altair8389]

I managed to buy this item for my ASI120mm-S, and have got good results. I have only used 3 lots of 5mm spacers between the camera and the reducer and have got almost 0.5x focal reduction.