The ISA Space Exploration NASA 70/700 AZ telescope is very much a beginners' telescope package, comprising a 70mm achromatic refractor, manual altazimuth mount, red dot finder, star diagonal, 20mm and 9mm Kellner eyepieces, front-mounted solar filter and smartphone camera adaptor. This comprehensive outfit allows observations of a wide range of celestial objects, from the Moon, Sun and planets through to deep-sky objects. The construction uses lightweight materials throughout, making this telescope suitable as a 'grab and go' instrument with quick deployment at home as well.
The telescope is supplied in a full-colour retail box that enhances the presentation of the outfit as a gift for a budding new astronomer, but there is a glaring error in the printed text in several places. The box erroneously describes the telescope as a 'reflector telescope', which it isn't: it has a two-element lens design, known as an achromatic refractor.
The optical tube has a high-gloss white finish with a red pinstripe around the base of the dew shield. The optical tube and dew shield are made from seamless aluminium with a very matt black internal finish to reduce reflections. To further reduce reflections, a single knife-edge baffle is employed within the tube. In use, the dew shield did a commendable job of keeping dew from forming on the front element of the primary lens.
Esta historia es de la edición December 2023 de BBC Sky at Night Magazine.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 8500 revistas y periódicos.
Ya eres suscriptor ? Conectar
Esta historia es de la edición December 2023 de BBC Sky at Night Magazine.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 8500 revistas y periódicos.
Ya eres suscriptor? Conectar
Unearthing galaxies in the archives
Comparing old Hubble data to today is revealing distant active galaxies
Voyager 1 is back online and exploring the unknown
An interstellar rescue brings the venerable spacecraft back after months out of action
When Haydn met the Herschels
Jonathan Powell on how the astronomer siblings inspired the famous composer
A quicker way to colourise your narrowband frames
Create a bicolour image in Siril using data from just two narrowband filters
Manhattanhenge
New York's urban island of Manhattan, with its gridiron street layout, sees summer Suns set neatly between skyscrapers. Jamie Carter explains the phenomenon
A very British eclipse
In 1927, Britain experienced its first total solar eclipse since 1724. Mike Frost looks at how, like 8 April 2024's US spectacle, eclipse fever swept the nation
The spirit of the eclipse
Eclipse chaser Yvette Cook reports on what it was like in the path of totality in Texas during 8 April's Great American Eclipse
Cosmic rays
In part two of our series, Govert Schilling looks at cosmic rays, the high-energy particles that bombard Earth from space
Stones of the SOLSTICE
Jamie Carter explores 12 ancient stones, tombs and temples across the world that align with the Sun at the solstice
Surfing spacetime with LISA
A new era of gravitational wave astronomy is on its way as the ambitious upcoming LISA space mission joins a host of huge detectors on Earth. Charlie Hoy explains