Askar 185APO f/7 Astrograph (185APO)
The Askar 185APO is an OTA with a 185mm aperture,1295mm focal length, and f/7 native focal ratio.
The large aperture of 185mm gives it an inherent advantage in terms of light-gathering power, resolution, brightness, and contrast, allowing the photographer to gather more light and present more details and brighter objects in the image. Along with more light coming into the astrograph, the limiting magnitude can reach 13.1.
The Askar 185APO adopts a triplet air-spaced APO lens design, including one piece of ED glass.
The Askar APO series employs special optical designs and multiple lens elements to correct chromatic aberration, naturally providing higher-quality object details and color accuracy.
In the refractor's element structure, increasing the number of lens elements and designing lens combinations can effectively improve chromatic aberration correction. However, this also means increased production costs and design complexity.
ED glass, also known as low-dispersion glass, is a type of optical glass specifically designed to reduce chromatic aberration.
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).
Each piece of Askar 185APO is equipped with a unique name ring for identification.
The retractable design of the dew shield, along with the enlarged locking screws, provides convenient usage.
The Askar 185APO has an integrated design for the tube ring, with an overall weight of 2.3 kg. The thumb screws enable easy opening and locking of the tube rings. Meanwhile, the base of the tube rings is heightened, providing more space.
The Askar 185APO has an extended 400mm handle with a special slot design, making it also a base for installing a finder scope.
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.
It is worth mentioning that 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.
Technical Specifications
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Aperture size
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185mm
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Focal length
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1295mm
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Focal ratio
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f/7
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Objective lens
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Triplet air-spaced APO (including one ED glass)
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Total length
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1081mm(when the dew shield is contracted)
1222mm(when the dew shield is stretched)
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The length of the rear retractable lens tube
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95mm
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OTA weight
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14.9kg
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Gross weight（including tube ring and dovetail plate）
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17.2kg
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Rear-end thread type
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2"/1.25" visual adapters
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Standard package items
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an 185APO OTA, a pair of tube rings, a handle, an Askar 400mm Losmandy dovetail plate, an Oxford cloth case，a manual
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In the Box
- 1x Askar 185APO OTA
- 1x Pair of tube rings
- 1x Handle
- 1x Askar 400mm Losmandy dovetail plate
- 1x Oxford cloth case
- 1x Manual
Warranty & Manuals
Askar Warranty
