Help: QHY8 T2 to 48mm skywatcher 80ed reducer

[David010167]

Hi, I have just picked up a QHY8 to try insteed of my Canon 1000d.

My setup is the Skywatcher 80ed with the matched skywatcher focal reducer. The reducer has a 48mm thread and the Qhy8 has a T2.

I need to add about 34mm between the QHY8 and the reducer. I believe the QHY8 distance from sensor is 21mm and the reducer needs 55mm, so I need to both join the camera to the reducer with an adapter and add 34mm.

Does anyone know if there is an adapter for the skywatcher 48mm to T2 and then what would be the best way of adding the missing distance, I am guessing T2 tubes like the baader ones?

All help appreciated for new adventure

regards

David

[martin_h]

Try this...its what I use.... TS Adapter vom M48 (2' Filtergewinde) auf T2 - kurzbauend

[Black Knight]

Do you use the M48-T2 adapter together with the (30mm?) extension tube?

[David010167]

That is just what I need.

I discovered in my box of goodies a T2 to M48 adapter, but alas not a M48 to T2.

Thank you Martin.

[martin_h]

Do you use the M48-T2 adapter together with the (30mm?) extension tube?

You will need whatever extension tube suits the distance to the ccd chip

[Uranium235]

Give bern a call at modern astronomy, he sells very short M48 to T2 nosepieces that did the job for me. You will also need some spacers to make up the 55mm from the reducer to the ccd chip.

[Stephen]

Check out astroboot for varying lengths of T extensions

[martin_h]

Hi, I have just picked up a QHY8 to try insteed of my Canon 1000d.

My setup is the Skywatcher 80ed with the matched skywatcher focal reducer. The reducer has a 48mm thread and the Qhy8 has a T2.

I need to add about 34mm between the QHY8 and the reducer. I believe the QHY8 distance from sensor is 21mm and the reducer needs 55mm, so I need to both join the camera to the reducer with an adapter and add 34mm.

Does anyone know if there is an adapter for the skywatcher 48mm to T2 and then what would be the best way of adding the missing distance, I am guessing T2 tubes like the baader ones?

All help appreciated for new adventure

regards

David

QHY spacings given here - (scroll down a bit) - qhyccd.com

[David010167]

Wow, thank you everyone, I will take a good look and work out what I need.

David

[Merlin66]

Baader also do an adjustable T thread adaptor (20-29mm) with locking ring. It has a calibrated scale.

Varilock Extension #2956929

[Zakalwe]

Modern Astronomy do 17mm extension tubes, so get two of those. The part number is SKU1888, made by Brightstar.

[russellhq]

What did you get in the end?

I've got the same set-up and am looking for the right extension.

So far I've found the TS adapter which adds 3.5mm and a 30mm 2" extension tube. That, combined with the 21mm of the QHY8L should bring me up to 54.5mm. I guess that would be good enough?

I thought about getting the Baader Varilock, but it seems to me like another possible source of flex.