ZWO ASI6200MM Pro User manual

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%Home &Tutorials &Connection methods of ASI6200MM Pro, 2'' EFW/M54 filter drawer and M68 OAG
How to connect ASI6200MM Pro to 2″EFW/M54 filter drawer and M68 OAG?
How many solutions there are for ASI6200MM Pro to get 55mm back focus length?
How to connect ASI6200MM Pro to the M68-thread telescope side?
If you are still stressed with these problem, then this tutorial is exactly what you are looking for.
The first one is using the 2”EFW, M68 OAG and the 5mm sensor tilt adapter.
ASI6200(12.5mm) + 2”EFW(20mm) + M68 OAG(17.5mm) + sensor tilt adapter(5mm)=55mm back focus length.
This is the very first and also the most recommended connection solution. The combination of the mono full-frame camera
and 2”filter wheel can create many possibilities on your astrophotos. It’s very suitable for the middle and high-level
astrophotographers.
'December 19, 2019 (ZWO ASI Camera )Tutorials 46 Comments
Connection methods of ASI6200MM Pro, 2” EFW/M54 filter drawer and M68 OAG
There are two connection solutions for ASI6200MM Pro.
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The second one is using the M54 filter drawer, the M54-M48-2 adapter and M48-M48 extender.
ASI6200(12.5mm) + M54 filter drawer( 20mm) + M54-M48-2 adapter (2mm) + M48-M48 extender (16.5mm)=56mm back
focus length.
This is a new connection solution for ASI6200(both mono and color camera). It’s more affordable but the back focus length
is 56mm, which should be fine at most cases. However, if you think it’s better to have 55mm back focus length, then we still
recommend you adopt the first solution.
Also, the M48-M42 adapter will block the sensor a little bit as the diagonal of the ASI6200 sensor is 43mm.
1) Disassemble the 5mm sensor tilt adapter on the main camera with the help of a screwdriver:
2) Remove the back cover of EFW:
The detailed guide of the first connection solution:

3) Disassemble the filter wheel carousel (Note: Please do not disassemble or move the central screw of this carousel,
otherwise the EFW will be damaged):
4) Align the four screw holes of EFW with these in the four corners of the camera chip as shown below:

5) Tighten the screws at the interface between the EFW and the main camera:
6) Install the filter wheel carousel:

7) Fix the M68 OAG to the back cover of EFW(Note: You may reposition the prism to make sure it would not block the
sensor):
8) Fix the 5mm sensor tilt adapter to this M68 OAG. If the thread of the telescope side is M42 or M48, then you should use
the M54 sensor tilt adapter just removed from the camera. While if the thread of the telescope side is M68, then you should
use the new M68 sensor tilt adapter.

9) Attach the back cover of EFW to the front cover:
10) Installation completed.

Note: Please make sure the prism does not block the sensor or your telescope.
Adjust the focal length of a guide camera by using the guide knob.
Would be better if you finish the above steps during daytime, as it is very difficult to adjust it accurately at night.
This solution uses the M54 filter drawer and can be rather simple compared to the first one.
The detailed guide of the second connection solution:

No need to take off the M54 sensor tilt adapter of the camera. Just align the M54*0.75 external(male) thread with the
sensor tilt adapter and screw on.
Then connect to M54-M48-2mm adapter(come with the M54 filter drawer) and M48-M48 16.5mm extender(come with the
camera). Done!

Avik Basak
April 26, 2020 at 8:59 pmRepl
Moson
Yes, you could try the following way: ASI6200(12.5mm) + M54 filter drawer( 20mm) + M68
OAG(17.5mm) + telescope.
Note: If your telescope has M68 threads, it can directly connect with M68 OAG. Otherwise you
need to customize an adapter.
!0"0
April 27, 2020 at 3:18 am Reply
Vlad Hogendorf April 25, 2020 at 6:55 pm Reply