Reviews

SharpStar D 150mm f/2.8 HNT: An imaging telescope with sharp vision

27 May 2020 Ade Ashford

Until comparatively recently, your best tool for capturing wide-angle vistas of extended deep-sky objects with a full-frame DSLR or CCD/CMOS camera was a fast prime lens from one of the big-name players in photography. Now you can attain these swift imaging speeds with hyperbolic Newtonians, such as the SharpStar 15028HNT.

Equipment

TS Photoline 60mm f/5.5 apo travel ‘scope

31 July 2017 Ade Ashford

It’s holiday time again and the keen observer is faced with the usual dilemma: how does one carry a telescope small enough to be useful to far-flung dark and exotic skies? Fortunately for globe-trotters concerned about optical size and weight, Telescope Service in Germany has the TSAPO60 — a compact and very versatile photo-visual 60mm f/5.5 ED refractor.

Equipment

Orion Funscope Astro Dazzle 4.5” reflector kit

22 November 2016 Steve Ringwood

Steve Ringwood appraises the Orion Funscope Astro Dazzle, an eye-catching 4½-inch (114-mm) f/4.4 Newtonian reflector on a tabletop Dobsonian mount designed for beginners. The pre-assembled instrument possesses an inherent simplicity that will not challenge, with an aperture that brings a wealth of astronomy’s best to the viewer, he says.

Equipment

Orion 60mm multi-use guidescope

3 September 2016 Steve Ringwood

These days, more is expected of a finder than to merely direct the main telescope to a celestial object of interest. This versatile 60mm f/4 instrument possesses a fine movement non-rotating helical focuser that has been designed to double as a traditional finder or guidescope with Orion’s StarShoot AutoGuiders, says reviewer Steve Ringwood.

Equipment

Vixen VMC110L modified Cassegrain OTA

7 July 2016 Steve Ringwood

Steve Ringwood appraises the VMC110L, a novel “grab ‘n’ go” modified Cassegrain telescope of 110mm aperture and 1035mm focal length (f/9.4) from renowned Japanese manufacturer Vixen. The instrument features twin 1¼” eyepiece ports — one of which can be used for imaging or photography — and an internal flip mirror system to quickly switch between the two.

Equipment

Celestron Rowe-Ackermann Schmidt Astrograph

1 June 2016 Ade Ashford

Celestron’s 280mm (11-inch) aperture f/2.2 Rowe-Ackermann Schmidt Astrograph (RASA) is capable of blisteringly fast photographic speeds, capturing images of nebulae and galaxies in seconds. An imaging system optimised for virtually any one-shot colour CCD or DSLR in existence, Ade Ashford appraises this photon-grabbing wonder in the context of evolving optical systems.

Equipment

Altair Astro Solar Finder

14 May 2016 Steve Ringwood

There is a delicious irony that ‘finding’ the brightest astronomical object in the sky is associated with the greatest danger — if one were to attempt using a conventional finder to point a suitably filtered telescope at the Sun, that is. Altair Astro’s Solar Finder permits simple, safe and swift alignment of your solar telescope, says reviewer Steve Ringwood.

Equipment

Orion 3″ field flattener for EON 115/130 EDT refractors

30 April 2016 Steve Ringwood

Steve Ringwood reviews a dedicated 3″ field flattener designed for use with Orion’s EON 115/130 EDT refractors. One side of the field flattener threads on to the 3″ focuser, whilst the other offers a wide M48 thread that enables fixture of DSLRs, etc. without the vignetting possible with smaller M42 designs — particularly when deployed with full frame sensors.