Sharpstar 61EDPH III Full-Frame Flattener

The Sharpstar 61EDPH III Full-Frame Flattener is a specialized accessory designed specifically for use with the Sharpstar 61EDPH III telescope. This flattener plays a crucial role in correcting field curvature, significantly enhancing the quality of astrophotography.

Optically, this flattener is constructed as a triplet with a 1x magnification factor, ensuring that it doesn't alter the nominal focal length of the Askar 103 APO telescope. Its generous full illumination disc diameter makes it compatible with cameras equipped with full-frame sensors, offering seamless performance.

This device also facilitates the attachment of 2-inch filters, which can be securely screwed into the M48x0.75 thread on the camera side.

Key Features of the Askar 1x Full-Frame Flattener (103 APO):

• Designed exclusively for the Sharpstar 61EDPH III astrograph and compatible with both cameras and full-frame cameras.

• Lenses feature a full multi-layer coating (FMC) for enhanced optical performance.

• 1x magnification factor maintains the original focal length of the telescope.

• Compatible with 2-inch filters for versatile astrophotography.

Technical Specifications:

• Optical design: Triplet

• Magnification: 1x

• Coating type: Full multi-layer coating (FMC)

• Compatibility: Sharpstar 61EDPH III

• Focal length without flattener: 360 mm

• Focal length with flattener: 360 mm

• Aperture without flattener: f/5.9

• Aperture with flattener: f/5.9

• Rear thread (camera side): M48x0.75 / M54x0.75

• Front thread (extractor side): M68x1

• Filter installation capability: Yes, supports 2-inch filters

• Back focus: 55 mm / 81.5 mm

• Length: 93.4 mm

• Weight: 0.4 kg

Included Components:

• Sharpstar 61EDPH III Full-Frame Flattener

Warranty:

Enjoy peace of mind with a 24-month guarantee.