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Primaluce Lab AIRY ED90 Apochromatic Refractor Telescope

Primaluce Lab AIRY ED90 Apochromatic Refractor Telescope
Price:  £1,120.00(Inc. 20% VAT)

Product Code:  PL-AIRYED90
Manufacturer:  Primaluce Lab
Telescope Type:  APO Doublet Refractor
Aperture (mm):  90 mm

Primaluce Lab

Great diameter apochromatic refractor with high mechanical quality at an incredible price! Thanks to its 90mm diameter, it can be used with satisfaction even in visual use and it's perfect also for the use on photographic tripod (since it's compact and lightweight). Our comprehensive range of accessories allows you to customize it to suit your needs!

Primaluce Lab AIRY ED90 apochromatic refractor, 90mm diameter, 500mm focal length (f5.5), FPL-51 apochromatic doublet, aluminum tube with 50,8mm Hybrid-Drive focuser with fine focus knob, photographic tripod connection (mounts support rings available), rigid transport bag.

FPL-51 90mm apochromatic lens

The AIRY ED90 apochromatic refractor uses a doublet lens with FPL-51 element fully multi-coated that offers superior correction of chromatic aberration, compared to the classic achromatic refractor, but at a lower price than the FPL-53 models. For this reason, the AIRY ED90 apochromatic refractor is perfect for those customers looking for a  large diameter instrument but at an affordable price, very good for long-exposure astrophotography. It's also perfect for those who use monochrome CCD cameras with narrow-band filters for color images (the use of such filters cancels the small residual chromatic aberration and makes perfect the final image).

The short focal length (500mm) and the fast focal ratio (5.5) make it perfect for wide field astrophotography of many extended objects, which will be shown in their full extent also with cameras equipped with not too large sensors (and therefore not too expensive).

In order to maximize the quality of this apochromatic refractor using cameras with more than 15mm diagonal sensors (such as DSLRs), it can be used with the optional 1x field flattener which makes pinpoint stars up to image edges.

50.8mm Hybrid-Drive focuser

Often refractors are provided with Crayford focusers suitable for visual use but not for photo applications. In fact, during the long exposures required by astrophotography, this type of focuser can cause camera slippage moving the sensor out of focus. For this reason we have chosen to provide our AIRY ED90 telescopes with the new 50.8mm Hybrid-Drive focuser that adds, under the focuser tube, a rack and pinion thereby maintaining in position even heavy cameras (capacity of up 8 Kg). Below the focuser there's also a locking screw: closing it, you will be sure that your camera will not move any more!

The 50.8mm Hybrid-Drive focuser presents the connection for 50.8mm and 31.8mm accessories (comes with a handy 31.8mm reducer). It also features a convenient 1:11 fine focus gear, particularly useful when you need to focus at high magnification. The focuser has a very long ride (95mm) to allow the use of both photographic instruments (cameras with accessories) and visual (eyepieces and diagonals). For visual use, we recommend our 50.8mm XP dielectric diagonal for the observation of the sky or our XP 45¶ø erect image prism for the one of terrestrial objects (use as a spotting scope).

You can also replace the standard AIRY ED90 eyepiece holder with screw with the new OnAxisLock system (optional - image below right) that offers a greater clamping force, avoiding any possible flexure (so it's perfect for astrophotography), it does not damage the connected accessory and perfectly centers the optical axis of the telescope. All this thanks to this new double-ring locking device: just rotate manually the appropriate outer ring (designed to allow an easy grip, even with gloves) in order to obtain a perfect closure!

Precision mechanical construction and 360¶ø quality

You will be amazed of the mechanical quality of our AIRY ED90: full aluminum intubation made with precision CNC machine is rugged yet lightweight. All the components are treated at the highest levels to provide an instrument with which is a real pleasure to photograph or watch the sky! The aluminum front dew shield can be closed to make the telescope more transportable. The front cap is completely aluminum made. The focuser can be rotated freely through 360 degrees (without changing the focus point) to position the camera with the right angle and perfectly frame the object you want to record.

Below the optical tube there's a metal plate which allows installation on photographic tripods (perfect for use as a terrestrial spotting scope). This plate has the shape of a Vixen dovetail bar then the telescope can also be installed directly on mounts with this connection. For long exposure astrophotography use we suggest our 102mm PLUS system support rings. The AIRY ED90 refractor is an optics and mechanics jewel, and to carry it or keep it protected at best, it comes with a beautiful hard case.

PLUS system support rings (OPTIONAL):

Forget about the uncomfortable and weak support rings that are often found in cheap telescopes! Our AIRY ED90 apochromatic refractor can be used (optional) with beautiful aluminum anodized support rings, made with high precision CNC machines, which are part of the PLUS (Prima Luce Universal System) system. This gives you maximum freedom in adapting the telescope to your request; at the same time, it has all the threaded holes, holes and slots suitable for connecting all the PLUS compatible elements, always with simple M6 screws.

For example, you can choose to install either a Losmandy or Vixen plate type, or you can use the holes in the upper part of the rings to install a telescope in parallel (through the guide rings PLUS compatible) or another dovetail plat equals to one located below the telescope (to position where you want guide rings or to allow the sliding Vixen + Losmandy dovetail clamp).

A complete line of dedicated accessories:

Our complete line of accessories for AIRY let you personalize your telescope according to your needs. Always with quality and operating certificated instruments!

The security of your purchase: Q-certified

We often hear users are not sure about purchasing: is the telescope collimated? Has the operation been verified? Does the focuser work?

For this reason, we have developed Q-certified, a comprehensive control system that we work out in our laboratory prior to shipment and delivery of the product you ordered. In fact, before delivering the AIRY ED90 telescope, we test the collimation and the perfect functioning of all mechanical components.

In addition, we pay much attention and care to shipping, carrying a sturdy packaging and giving it to the courier service. We want to be sure that you will receive your new AIRY ED90 not only in the shortest possible time but also with utmost care.

AIRY ED90 apochromatic refractor - scope of delivery:

- Optical tube AIRY ED90 apochromatic refractor (D: 90mm F:500mm f/5.5)

- Aluminum intubation

- 50,8mm Hybrid-Drive focuser with 31,8mm adapter and 1:11 fine focus

- Retractable dew shield

- Bar for photographic tripods and Vixen type mount connection

- Hard case

- Connection for "DX-1 finder support for AIRY refractors"

Technical specifications

Optical DesignApochromat
OpticsFPL51 doublet
Diameter (mm)90mm
Focal Length (mm)500mm
Focal Ratio5.5
Field flattener/correctorNot included (optional)
Optical TubeAluminium
Secondary Mirror ObstructionNO
Mirror CellNo
Focuser2" Rack & Pinion Hybridƒ__Drive, micrometric
Eyepiece holder50,8mm with 31,8mm reducer
Weight3,4 Kg
Hard/soft caseHard case

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