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Reproduction of part or all of the contents of this document in any form is expressly prohibited other than for individual use only. All text, images and labels are property of nimax Gmbh.
Art.- Nr. 49754
Instruction Manual
Congratulations on the purchase of the new Omegon® Smartphone and Camera Adapter. This adapter is designed to hold most modern
smartphones and digital compact cameras. It fits to most 1.25” telescope eyepieces making afocal high-power telescope astrophotography
easy and fun. It can also be used with spotting scopes eyepieces for terrestrial afocal photography. This adapter allows precision
mechanical to optical axis centring thus providing sharp pictures and giving consistent results.
1. Parts
The adapter consists of two main parts.
The adapter’s body which is made from aluminium (figure 1) with its two built-in thumbscrews and threaded shafts to adjust the
platform’s (J – figure 1) position to the smartphone bracket. The bracket (M) securely holds a smartphone or a digital compact camera.
Besides that, the two additional supplied ¼”-20 knobs (N) are used to fix the bracket (M) to the platform (J).
2. What is afocal photography. The Omegon® Smartphone and Camera adapter is designed for afocal photography with a telescope. A
camera or a smartphone captures the image formed by the telescope’s eyepiece. This technique, called afocal photography, is very
popular as it is very easy to do. The object centred in the eyepiece’s field of
view (FOV) - focused like you would do for visual use - can be
photographed by a smartphone’s camera or a compact camera. Although it
is possible to take afocal photos by holding a smartphone by hand and
reaching it close to the telescope’s eyepiece, the results obtained with
such a technique are usually mediocre. The hand is not a stable platform.
In order to obtain consistent quality sharp images a rock solid platform is
required. It is also important to align the camera’s objective parallel to the
eyepiece and that all optical axes are aligned. This is only possible by using
an adapter that allows to finely adjust the position of the camera and fixing
it to the eyepiece! The eyepiece should be a long eye relief eyepiece.
These types of eyepieces, when compared to traditional eyepieces, create
the focused image much farther away from the eyepiece lens itself, making
it easier for the camera to photograph the complete FOV.
2.1. Getting started. Start by releasing the two post knobs (K) - as shown in
figure 1 - the internal built-in spring system will push the posts up allowing
for the device to be slided-in. Make sure to release it so there is enough
room for the smartphone to slide-in. Remember that the device’s
maximum width should not exceed 80mm. Sliding the device is easy but
make sure the smartphone slides in the direction of the left L-shaped post
Figure 1.
A- clamp knob F- height adjustment knob K- post knobs
B- clamp G- base L- post (left and right)
C- eyepiece housing H- sideways adjustment knob M- bracket
D- slot I- locking knob N- ¼”-20 knobs
E- ¼”-20 three lobed knob J- platform O- ¼”-20 holes
Figure 2. Release the two Smartphone fixing knobs (I)
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Reproduction of part or all of the contents of this document in any form is expressly prohibited other than for individual use only. All text, images and labels are property of nimax Gmbh.
Art.- Nr. 49754
– figure 3. Now tighten the two post knobs (K) so that the device is
securely fastened to the bracket (K) as shown in figure 4. Place the
bracket (M) with previously secured smartphone on the platform (J) so
that it is flush with the clamp (B) - figure 5. This is important because
the distance from the eyepiece to the smartphone should be kept to a
minimum. Thread and slide the ¼”-20 knobs (N) until the phone is at
its closest position to the clamp. Make sure to tighten both as shown in
figure 6. Next step is to adjust the smartphone’s camera position so
that is more or less centered to the clamp. At this point, it is not of
extreme importance for both camera lens and clamp to be centred, but
a rough centring is desirable. The clamp (B) will hold the telescope’s
eyepiece. Both the camera and eyepiece should be centred in relation
to one another. The sideways adjustment knob (H) adjusts the
smartphone position sideways while the height adjustment knob (F)
adjusts fit up-down. Rotating these knobs only make small adjustments
and several turns may be necessary to center the smartphone camera
with the eyepiece housing (C).
Make sure that the locking knob (I) is released before adjusting
the platform’s position. The movements on both axes must
also be friction-free. Locking is only necessary when the camera
is centred to the eyepiece housing (C).
Figure 3. Slide the smartphone making sure the smartphone slides to
the left.
Figure 4. Tighten the two Smartphone fixing knobs (I) to securely fix
the smartphone.
Figure 5. Place the bracket (M) with the smartphone on the platform (J).
Slide the ¼”-20 knobs and match it with the bracket’s threaded holes.
Figure 6. Tighten the two post knobs (K) so that the bracket (M) is well
fixed. The smartphone should be flush to the Clamp (B).
Figure 7. Centre the camera in relation to the eyepiece housing (C)
system by using the height, sideways and the fixing knobs.