Askar SQA85 Telescope 85mm Aperture F4.8 Quintuplet Air-Spaced SD Glass Petzval Astrograph Refractor for Deep Sky Astrophotography and Visual Astronomy
Book Details
Author(s)Askar
PublisherAskar
ISBN / ASINB0DJT9KSSL
ISBN-13978B0DJT9KSS3
AvailabilityIn stock
Sales Rank324
CategoryElectronics
MarketplaceUnited States 🇺🇸
Description
- Quintuplet air-spaced lens design, including 2 pieces of SD glass. The central star point has an RMS radius of less than 1.6 um, and the star point at the corner is less than2.5 um, showing a super-fine star point. lt also has excellent full-field illumination and MTF data.
- Integrated self-flattened design, supporting a 44mm full-frame image circle, no need for additional flatteners, and no need for additional calculation of the back focus,Between 40mm and 70mm connection distance, userscan directly use it for shooting after the OTA is in focus.
- On both sides of the focuser, there are two finder bases, which not only eliminate the need for disassembling when changing the position of the finder scope but also provide additional mounting positions for other as tronomical accessories.
- In addition to connecting to the astronomical camera for astrophotography,the SOA85 can also be connected to a mirrorless camera or DSLR camera for shooting.
- The rear of the focuser is equipped with a 360°high-precision rotator with a precision scale to allow the user to adjust and save the angle of ro-tation. lt is also equipped with an enlarged locking screw for easy locking even under high loads
More Books in Electronics
More Books by Askar
