Project:
Nikon D800 for astrophotography ?

Contents:

1. Nikon D800 overview
2. Adapter Nikon to Pentax 645
3. Lid, Dove tail, Tube ring
4. Focuser mechanism, driver
5. Off-axis guide camera
6. Computer module and DC/DC converter
7. DC/DC general triple converters
8. Main bracket
9. Wiring & USB-HUB
10. Test with Windows and APT
11. First Light
12. Balance system
13. Nikon vs Canon, Pentax FA vs Pentax
14. Tilt adjuster
15. KStars/INDI setup for Nikon
16. To be continued

Note:
I take no responsibility or liability for what are written here, you use the information on your own risk!

8: Main bracket

All the devices I have designed and made some enclosures to must in some way be attached to the telescope, a main bracket.

Main bracket:

This bracket will be mounted on top of the Vixen dove tail. On both sides I attach my devices. Lower right, that's where the stepper motor will be mounted. It will be sitting on a pivot plat form to follow the focus screw when it changes its angle.

Peripherals:

There are at this moment three devices that attach to the main bracket.

1. Yellow, triple DC/DC converters
2. Green, stepper motor focus driver
3. Raspberry Pi5 and its 5 volt DC/DC converter

Between these devices the camera lens will sit.

Stepper motor pivot:

The stepper motor tilt when it moves the tangential arm. This bracket handle that problem.

3D-printed:

With the main bracket attached to the Vixen dove tail. All holes in correct places, not all times that happen. If I have to 3D-print a new I maybe include the front tube ring in the construction to make it more stable.

Peripherals:

The three devices installed: triple DC/DC converter, focus motor driver and Raspberry bracket with its built in 5 volt converter. Front view.

From back, the camera side.

Camera and lens:

The lens fit between the devices and the main camera and its extra guide camera. Only the stepper motor missing and a lot of cables. Even with these included the weight will be something like 3.7 kg.