Askar 185 APO Manuale utente
185 APO
User s Manual
，
www.sharpstar-optics.com
The Askar 185APO is an OTA with a 185mm aperture,1295mm focal length, and
f/7 native focal ratio. The Askar 185APO adopts a triplet air-spaced APO lens
design, including one piece of ED glass.
As a large aperture, long focal ratio telescope, the Askar 185APO was designed
with portability in mind. Due to the retractable lens tube design, the shortest
overall length is only 1081mm, the net weight is 14.9kg, and the gross weight
is 17.2kg (including the handle, tube ring, and dovetail plate).
The entire Askar 185APO tube is crafted using high-quality CNC machining
with anodized and surface spray paint treatments. The retractable design of the
dew shield, along with the enlarged locking screws, provides convenient usage.
The Askar 185APO has an extended 400mm handle with a special slot design,
making it also a base for installing a finder scope. The Askar 185APO has an
integrated design for the tube ring, the thumb screws enable easy opening and
locking of the tube rings. The dovetail plate of the Askar 185APO is the
standard Losmandy dovetail plate, which is compatible with most equatorial
mounts and bases on the market. The dovetail plate is designed with multiple
holes, which makes it easy to adjust the position. The length of the dovetail
plate has been extended to 400mm, which is more convenient for balancing on
the mount.
The rear lens tube of the Askar 185APO has an integrated retractable design.
We strengthen the overall stability and ensure that the optical axis will not be
affected when the lens tube is stretched, thus guaranteeing the quality of the
image. The retractable part also features a rudder-type locking ring that makes
it easy to loosen or tighten.
When the lens tube is contracted, the Askar 185APO can be used with a
binoviewer for visual observation. When the lens tube is stretched, the 185APO
can be connected with a specific 0.8x reducer or 1.0x flattener for imaging or a
diagonal and eyepiece for observing.
In terms of the focuser, the Askar 185APO is equipped with a dual-speed rack
and pinion large 3.5-inch rigid focuser, which can be compatible with most
motorized focusers on the market. There is a high-precision scale printed on
the 100mm focusing travel. The rear of the focuser features a 360° high-preci-
sion big rotator, along with precise scales for convenient adjustment and
saving of rotation angles, enabling precise rotation. It is also equipped with an
English
Instructions for use
Aperture size:185mm
Focal length:1295mm
Focal ratio:f/7
Objective lens: Triplet air-spaced APO(including one ED glass)
Total length:1081mm(when the dew shield is contracted)
1222mm(when the dew shield is stretched)
The length of the rear retractable lens tube：95mm
Net weight:14.9kg
Gross weight:17.2kg
Rear-end adapter:2"adapter,1.25"adapter
enlarged rotator locking screw that can be easily secured even under high
loads. The entire focuser barrel is CNC machined with an anti-reflective
internal design and matting paint, providing extra measures to eliminate stray
light.
There are two finder bases on both sides of the focuser, which not only
eliminates the need for disassembling when changing the position of the finder
scope but also provides additional mounting positions for other astronomical
accessories.
In terms of visual observation, the focuser interface at the rear comes with a
1.25"/2" adapter， so the 185APO can easily achieve focus when connected to
1.25" or 2" diagonals or various eyepieces. Because of the retractable lens tube
design, it can also be attached to a binoviewer for visual observation.
450
With all tubes contracted, remove the lens cap, the center of gravity is about 450mm from the front end.
Product Parts and the Size Diagram
focuser loading screw
fine adjustment knob
coarse adjustment knob
rotator locking screw
finder base
locking ring of the
retractable lens tube
rotator
2''adapter
1.25''adapter
coarse adjustment knob
bottom locking screw
handle
tube rings
400mm losmandy dovetail plate
6.3
6.3
40
44
320
400
M4
20
6
20
60
210
170
350
214
185
273
1081
207
292 380
Steps for using the retractable lens tube
When used with 2" diagonal, 0.8x reducer or 1x flattener,
please refer to the figure.
Rotate the locking ring in the
direction of the arrow
Pull the retractable part
out completely
Lock the locking ring reversely
185 APO
User s Manual
，
www.sharpstar-optics.com
Instruction manual
Items in 185APO Packaging
The Locking Screw Position Diagram
Warranty card Check list
Qualified certificate
①② ③ ④ ⑤
③Bottom Locking Screw
②Bottom Load Adjustment Screw
①③④⑤can be used for electric focusing
bracket installation
an 185APO OTA, a pair of tube rings, a handle,
an Askar 400mm Losmandy dovetail plate an aluminum case
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