ASTRODEVICE TC 900 User manual

Tilt Corrector
TC 900
User Manual
rev. 2022-11-09
STRODEVICE

Package contents:
1. Tilt Corrector
2. M4x8 screws (6 pcs)
3. M4x4 headless screws (4 pcs)
4. M2.5x10 screws with washers (4 pcs)
1
4
6
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23
4

First read the en•re manual and make sure that everything is clear to you.
Only then start working with TIlt Corrector.
If you have any ques•ons, please contact Astrodevice.
Introduction
Tilt Corrector is a device for adjusting tilt angle of the camera in the optical path
of the telescope. It works with any telescope and ZWO ASI 2400 MC Pro, ASI 2600
MM/MC Pro and ASI 6200 MM/MC Pro cameras. The tilt adjustment screws can
be accessed from the back of the camera, so that the camera does not need to be
removed from the set during adjustment, and the entire adjustment procedure
can be carried out with a live preview of the result. In addition to such continuous
operation, a special procedure, described further in this manual, makes it possible
to transfer the determined settings to the camera’s original black tilt plate or to
the Astrodevice •lter drawer.
Usage
The device is designed to work in conditions of 0-40 degrees Celsius (32°F - 104°F).
High temperatures
Although PET-G is relatively robust, too high a temperature can lead to
deformations. If you don’t even notice them, the micro structural changes can
cause the device to become uncalibrated. Therefore, do not store or use the
Corrector at high temperatures. Adopt the rule of thumb that if it’s too hot for
you, so is for the device.
Low temperatures
Our accessories have been successfully tested in temperatures as low as -20
degrees Celsius (-4°F). Although the use of the device in freezing temperatures
is technically possible, there is a risk associated with the phenomenon of ice
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condensation. If water freezes in the crevices of the structure, ice can damage the
accessory and lead to its destruction. Therefore, if you intend to use the Correctorin
freezing weather at your own risk, make sure that the environment is dry.
Under all conditions, work with the device should be personally supervised. Before
use, make sure that the accessories and their threads are not damaged and that
they are securely mounted. Never use a defective device.
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Technology, design and elements
Tilt Corrector was made with 3D printing technology using carbon !ber reinforced
PET-G plastic. Re!nement with this material signi!cantly strengthens the
construction and on the outside it manifests itself with a characteristic, slightly
rough texture.
The device consists of two coaxial rings (!g. 1 - R1, R2) connected by three
adjustment screws (S1, S2, S3). The narrower ring, R1, is mounted to the camera
housing through mounting holes H1 - H4. Rotation of screws S1, S2 and S3 pushes
back the wider ring R2, and thus changes the camera’s tilt angle. Clockwise rotation
of the screws moves the planes away from each other, while counterclockwise
rotation brings them closer together. The position where the planes of the rings
touch each other, no adjustment has yet been made, this initial position, will be
referred to as the zero position.
The back of the Tilt Corrector shows 2 groups of components, each of which
consists of three elements arranged around the perimeter every 120 degrees.
In the !rst group there are three bridges B1, B2 and B3 on the center of which there
are adjustment screws BS1, BS2, BS3. The bridges are permanently mounted with
side construction screws marked with a red xmarker. Please do not nor unscrew
these mounting screws, as this may lead to irreparable damage of the drawer.
The second group contains three tabs T1, T2 and T3 for mounting the original tilt

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plate. Each tab is bolted with two removable TS screws. In place of the tabs, other
brackets can also be screwed on, for mounting the Astrodevice FD 900 M87 •lter
drawer.
As you will no•ce, this manual repeatedly points out that this work should not
use force. You are dealing with fine threads and strong yet small parts. Everything
should work smoothly and if there is any resistance, it should be even and easy
to overcome. A no•ceable, slightly greater resistance to the rota•on of the screws
occurs only when adjus•ng the •lt - this is appropriate and desirable.
Do not •ghten the screws forcibly, do not •ghten them brutally, because then you
create stresses in the material, which can lead to distor•on of the image or damage
to the structure of objects.

fig. 1
X
X
XX
X
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X
R1 R2
S1
S2
S3
]
]
]
]
]
]
T1 T2
T3
B1
B2
B3
H1 H2
H3
H4
BS1
BS2
BS3
TS
TS
TS
TS
TS TS

Installation
The installation procedure follows two successive steps:
1. mounting the Tilt Corrector on the camera
2. mounting to the camera with the Tilt Corrector:
A. original black tilt plate
or
B. Astrodevice !lter drawer FD 900 M87
After completing steps 1 and 2, the camera can be mounted on a telescope.
***
STEP 1
Mounting the Tilt Corrector on the camera
Before you proceed, prepare a small ziplock bag into which you can hide the
screws you will be removing. This will make your work much more e"cient.
1. Place the camera on a flat table with the tilt plate facing up.
See !g. 2.
2. Remove the three screws holding the tilt plate.
Use 2 mm hex wrench, like the one provided with camera. See !g. 3. Be careful,
as tiny screws may fall. Secure them after removal so that they are not lost.
3. Remove the tilt plate.
See !g. 4.
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fig. 2
fig. 3
fig. 4
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4. Remove tilt adjustment bolts.
Remove three M4x4 headless screws from the tilt plate. They are originally
used for tilt adjustment. They are very small. Secure them in a safe place so
they don’t get lost. See •g. 5.
After this step, the original black tilt plate should be free of any screws. See
•g. 6.
5. Prepare the camera housing for Tilt Corrector mounting.
The Tilt Corrector is mounted to the camera using the four screws originally
tightening the top of its housing. In total, on the sensor side, the camera
housing is bolted with six screws, but only four will be used to mount the
Tilt Corrector. This eliminates the risk of disassembling the housing, as the
two screws remain in place at all times during installation. This step involves
temporary removing four of the six screws of the camera housing, and then
screwing new screws in through the holes in the Tilt Corrector ring.
Using a 2 mm hex wrench, remove the four M2.5x8 screws marked in •g. 7 in
blue. Note that these are the screws located above and below the longer edge
of the sensor. After removing the screws, your camera should look like the one
in •g. 8.
As in previous cases, also hide these screws in a safe place, preferably in a
ziplock bag that you have prepared for this purpose.
6. Prepare Tilt Corrector
Tilt Corrector is supplied with the rings as close to each other as possible. In
order not to cause stress during installation, you should start by loosening the
contact between rings, that is, moving them away from each other to a safe
distance of about 1,5 mm. To do this, use a 2 mm hex wrench to turn each
of the adjustment screws S1, S2 and S3 two full turns clockwise. Please also
unscrew the three tabs T1, T2 and T3 located on the back of the Tilt Corrector
(see •g. 9).
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fig. 5
fig. 6
fig. 7
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