Askar 185 APO 185mm Triplet Refractor Telescope User Manual
- June 1, 2024
- Askar
Table of Contents
Askar 185 APO 185mm Triplet Refractor Telescope
Specifications
- 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)
- Net weight: 14.9kg
- Gross weight: 17.2kg
- Rear-end adapter: 2″ adapter, 1.25″ adapter
Product Usage Instructions
Retractable Lens Tube Usage
- Rotate the locking ring in the direction of the arrow.
- Pull the retractable part out completely.
- Lock the locking ring reversely.
Visual Observation When the lens tube is contracted, use a binoviewer for visual observation.
Imaging or Observing When the lens tube is stretched, connect it with a specific 0.8x reducer or 1.0x flattener for imaging, or use a diagonal and eyepiece for observing.
Electric Focusing The Bottom Locking Screw can be used for electric focusing bracket installation.
FAQ
Q: Can the Askar 185APO be used for astrophotography?
A: Yes, when the lens tube is stretched and connected with a reducer or flattener, it is suitable for astrophotography.
Q: What is included in the 185APO packaging?
A: The packaging includes an 185APO OTA, a pair of tube rings, a handle, an Askar 400mm Losmandy dovetail plate, and an aluminum case.
Q: How do I adjust the focus with the Askar 185APO?
A: Use the fine adjustment knob for precise focusing and the coarse adjustment knob for initial adjustments.
Instructions for use
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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.
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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).
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The entire Askar 185APO tube is crafted using high-quality CNC machining with anodized and surface spray paint treatments.
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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.
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The dovetail plate is designed with multiple holes, which makes it easy to adjust the position.
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The length of the dovetail plate has been extended to 400mm, which is more convenient for balancing on the mount.
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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.
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The retractable part also features a rudder-type locking ring that makes it easy to loosen or tighten.
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When the lens tube is contracted, the Askar 185APO can be used with a binoviewer for visual observation.
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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.
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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.
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There is a high-precision scale printed on the 100mm focusing travel.
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The rear of the focuser features a 360° high-precision big rotator, along with precise scales for convenient adjustment and saving of rotation angles, enabling precise rotation.
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It is also equipped with an 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.
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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.
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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.
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Because of the retractable lens tube design, it can also be attached to a binoviewer for visual observation.
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Aperture size : 185mm
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Focal length: 1295mm
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Focal ratio: f/7
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Objective lens: Triplet air-spaced APO(including one ED glass)
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Total length: 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： 95mm
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Net weight: 14.9kg
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Gross weight: 17.2kg
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Rear-end adapter: 2″adapter,1.25″adapter
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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
Steps for using the retractable lens tube
When used with a 2″ diagonal, 0.8x reducer, or 1x flattener, please refer to
the figure.
The Locking Screw Position Diagram
- Bottom Load Adjustment Screw
- Bottom Locking Screw ①③④⑤can be used for electric focusing bracket installation
Items in 185APO Packaging
- an 185APO OTA, a pair of tube rings, a handle, an Askar 400mm Losmandy dovetail plate
- an aluminum case
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Documents / Resources
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Askar 185 APO 185mm Triplet Refractor
Telescope
[pdf] User Manual
185 APO 185mm Triplet Refractor Telescope, 185 APO, 185mm Triplet Refractor
Telescope, Triplet Refractor Telescope, Refractor Telescope, Telescope
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