I know this question has been asked several times before, but it's hard to get a concise answer. I recently became a new owner of a Celestron C6 and am wondering what is the required backfocus distance and from where is this measured from? Where is it measured from when using the Celestron 0.63x reducer?
I am actually working on 3D printing my own SCT adapter to T-mount/M42 with integrated 2" filter drawer and built-in rotator (I know a lot of features), and need to know how deep to make this adapter.
I've made such an adapter already for mounting my ASI183MC pro onto my Sigma 150-600mm lens, and that works fine and focuses normally, however, I know the C6 is a different beast.
Currently my SCT 0.63 reducer + 3D printed adapter is at least 55mm to the front face of the ZWO camera, but I'm sure this is not enough. I've heard some sources say 105mm backfocus, and some 127mm.
Also, for anyone wondering why don't I just use an off the shelf adapter for this, well I would but it seems like every time I try and obtain the ZWO version, it's backordered from High Point Scientifics website
. Therefore this is one of those things I decided to try and make myself. My plans are once I have the design perfected to make a silicone mold of it so I can cast the part in high durability resin.
3D printing fine threads has been a challenge, but with the right settings I've been able to make them work.
I am actually working on 3D printing my own SCT adapter to T-mount/M42 with integrated 2" filter drawer and built-in rotator (I know a lot of features), and need to know how deep to make this adapter.
I've made such an adapter already for mounting my ASI183MC pro onto my Sigma 150-600mm lens, and that works fine and focuses normally, however, I know the C6 is a different beast.
Currently my SCT 0.63 reducer + 3D printed adapter is at least 55mm to the front face of the ZWO camera, but I'm sure this is not enough. I've heard some sources say 105mm backfocus, and some 127mm.
Also, for anyone wondering why don't I just use an off the shelf adapter for this, well I would but it seems like every time I try and obtain the ZWO version, it's backordered from High Point Scientifics website
. Therefore this is one of those things I decided to try and make myself. My plans are once I have the design perfected to make a silicone mold of it so I can cast the part in high durability resin. 3D printing fine threads has been a challenge, but with the right settings I've been able to make them work.