Sharpstar 61EDPH III Full-Frame Flattener extras opinie

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The Sharpstar 61EDPH III Full-Frame flattener is a dedicated accessory for the Sharpstar 61EDPH III telescope. This flattener allows for perfect correction of the field curvature, which has a dramatic impact on the quality of astrophotographic shots.

Optically, the flattener was constructed as a triplet with a multiplicity of 1x, so it does not change the nominal focal length of the Askar 103 APO telescope. Thanks to the large diameter of the full illumination disc, it can be used without any problems with cameras equipped with full-frame matrices.

This device allows the installation of filters with a diameter of 2", screwed into the M48x0.75 thread on the camera side.

The most important features of the Askar 1x full-frame flattener (103 APO)

• flattener dedicated to the Sharpstar 61EDPH III astrograph, compatible with cameras and full-frame cameras
• lenses fully multi-coated
• 1x factor that does not change the focal length of the telescope
• can be used with filters with a diameter of 2"

Technical parameters

• optical design: triplet
• multiplicity: 1x
• coating type: full multi-layer coating (FMC)
• compatibility: Sharpstar 61EDPH III
• focal length without flattener: 360 mm
• focal length with flattener: 360 mm
• Exposure without flattener: f/5.9
• Exposure with flattener: f/5.9
• rear thread (camera side): M48x0.75 / M54x0.75
• front thread (extractor side): M68x1
• possibility of installing a filter: yes, 2"
• back focus: 55 mm / 81.5 mm
• length: 93.4 mm
• weight: 0.4 kg

Set elements

• Sharpstar 61EDPH III Full-Frame flattener

Guarantee

24 months