Starwave 70 ED Triplet APO Travel Refractor
- Optical tube with air-spaced 70mm F6 Triplet ED lens system (420mm focal length)
- Ohara S-FPL53 ED (SD) glass element and mating elements housed in a precision adjustable CNC machined lens cell.
- Super-high transmission coating (STM Coating) on all air to glass surfaces.
- Resolving Power (Dawes’ Limit) 1.6 arc seconds
- Visual Limiting Magnitude 11.5 maximum
- Weight approx. 2kg, OTA length with dewshield retracted, 32cm.
- Precision CNC machined components and tube made from light, tough aluminium alloy with matte powder coat. Retractable lens shade / dew shield.
- 2" "Rack 'n Pinion" Geared dual speed focuser with 1:10 micro-focuser.
- 2" to 1.25" reducer with brass compression rings included.
- Rotating clamp-ring grips the optical tube for easy photographic composition.
- Special mounting base with dovetail profile to fit most telescope mounts and 1/4"-20 Photo tripod threads for use with photo or video tripods.
*Staff comments: Chromatic aberration (or false colour) is completely suppressed in the in-focus and out-of-focus image, therefore we can describe this lens system as "APO" or Apochromatic.
Used mainly for white light solar and quick night sessions.
This little telescope is very small and light and very sharp. There are no colour aberrations whatsoever on bright stars at high power. Focuser very tight and smooth. The diagonal was shipped separately and arrived damaged so Altair picked it up sending me a new one Saturday, and I'm based in Scotland so couldn't ask for better service.
Author: Evan Dahl
Colour and sharpness are way better than my 85mm spotter costing four times more. It shows more at distance too.
This is a very light telescope and isn't as tough as a spotter but it weights less than my camera lens. It has a similar mounting and fits my tripod fine.
One niggle is that the front dew shield was a bit loose but the sales guy explained how to tighten the 3 little screws around the outer bezel and now it's very firm but slides easily. thank you Evan
This is a great travel scope. I don't often bother writing reviews but Ian invited me to comment and seeing he so patiently answered all questions it's only right to give a detailed review.
For brevity, this triplet ups the price/quality game to a new level in my opinion.
I bought the 70 triplet as my casual holiday scope at the intro pricing, simply because it's the lightest FL53 triplet lens I can find. At sub £1000 I didn't expect much. I was surprised and impressed at the quality at this price. I have a slightly larger aperture (also FPL53) doublet refractor costing several times the price from another manufacturer (Altair actually asked me not to say which so I've removed this from the review), and I use the smaller scope more. It's not brighter, but it's more portable and feels generally sharper too. There is no flaring or ghosting I can see even on the moon. I believe the optics are better per mm of aperture. The construction certainly is, especially the focuser.
The focuser can hold binoviewers, and two eyepieces without wobbling, unlike my larger refractor. I did need to increase the tension on the focuser, which was easy enough with the screw underneath.
For planets and the moon at twilight this telescope is a real treat. I'm starting to examine some faint objects but it's a little early in the year, so I tend to observe bright targets at around 100x magnification, which is easily handled with this little scope. I am now looking at a larger refractor from the same stable to mount permanently on a pier which is also made by Altair.
Ian suggested the Quark solar eyepiece, and what a good recommendation - I'm obsessed with it now and I use this whenever I get a chance. I'm retired so I have some time to really enjoy it. I will comment on that separately.
For the price, this small scope is so very well made, and the focuser is also very nicely made. Frankly I expected a lot less for this price. After I spoke to Ian at Altair, I realised I was dealing with people who use their own products and stand by them, which is rare these days. The package also arrived the day after I ordered it.
Thumbs up from me gents, and thanks for answering all my detailed questions. David Farthing.
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