It often happens that when you want to shoot in primary focus, the focus slider is too short, so you can't get it sharp. The same can happen if you want to use your binoculars without a reflex mirror. In this case, an extension arm is the solution, allowing you to focus in such cases.
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Astronomy
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- Astronomical telescope
- Telescope mounts
- Eyepiece
- Astrocameras
- Filter
- Filter wheel, filter drawer
- Focal reducer, corrector
- Accessory for astrophotography
- Finderscopes
- Adapter
- Barlow lens
- Solar telescope
- Telescope diagonals
- Focuser
- Binoviewer
- Power supply
- Telescope mount motor drives
- Mount accessory
- Collimation
- Accessories for ZWO Seestar smart telescope
- Astronomical literature
- Storage
- Dew remover
- Miscellaneous
Nature observation
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- Binoculars
- Monoculars
- Spotting scopes
- Spotting scope eyepieces
- Photo tripod
- Spotting scope cases
- Accessories for nature observation
Outdoor
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- Flashlight
- Laser rangefinder
- Accessory for flashlight
- Battery
- Battery charger
Hunting
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- Thermal imaging device
- Thermal imaging rifflescope
- Nightvision rifflescope
- Hunting camera
- Hunting camera accessories
- Thermal camera and night vision accessories
Microscopy
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- Microscope for children
- Biological microscope
- Stereo microscopes
- Digital microscopes
- Microscope camera
- Prepared slides
- Microscope eyepiece
- Microscope objective
- Microscope optical accessory
- Microscope accessory
Information
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- Knowledge base
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Knowledge base