APM 140mm Doublet Refractor FPL53 Glass

The new APM 140mm f/980mm Doublet brings you a large ED Doublet lens with FPl53 element at an unheard of price. As with all APM telescopes consistency is assured and each telescope goes through an interferometrical test at the 532nm (green) wavelength before shipping.

Notable features of the APM 140mm ED APO:

Good optical quality with good QC
ED optics with FLP53 glass
Precise 3.7 "focuser with 1:10 mirco reduction for heavy accessories
With F7 focal length ideal for visual and photographic purposes with a reducer
CNC tube rings
Carry handle
Very good value for money

With 980mm focal length, the 140-SD Apo is an impressive all-rounder, delivering tight double star observing and high contrast detailed planetary views with only 9.8kg tube weight.

Focuser Choice:
The APM 140 ED is available with either a 2.5” or 3.7" Rack and Pinion focuser, with 1:10 fine focusing. Both are suitable for imaging. The 3.7" is capable of dealing with higher loads and also features a separate rotating rear connector. The 2” and 1.25” eyepiece adapters have a brass collar-type clamp.
Contact Altair Astro for the optional Starlight Instruments Feather Touch (model FTF3035B-A) if preferred.

Imaging accessories include generic or APM field flatteners which maintain the focal length. There is also a dedicated Massimo Riccardi designed APM Reducer. This changes focal length by a factor of x0.75, resulting in a 735mm focal length and fast f5.25 focal ratio. (See recommended products)

In the box:

Optical Tube
1 Pair of Tuberings with handle
3.7" Focuser with 1:10 Microfocusing
Losmandy-Style Dovetail
Shoe for Finderbracket
Availablity: Usually in UK stock, 2-4 Days if out of stock in the UK. These scopes are popular, therefore if APM themselves are out of stock, we'll contact you to let you know.

Technical Specs:

Type of telescope: Doublet ED-Apochromat
Lens: Doublet ED Apo with FPL-53 Element
Color: black / white
Tube material: Aluminium
Aperture: 140 mm
Focal ratio: f/7
Focal length: 980 mm
Coating: Multicoated
Resolution: 0.83"
Limit value: 12.5 mag
Max. useful visual power: 280 x
Backfokus: 180 mm
Focuser: 2.5" or 3.7" R&P Focuser, with 360° Rotation
Rear focuser aperture: 2"
Viewfinder: none supplied
Tube diameter: 152 mm
Length during observing: 1030 mm
Transportation length: 830 mm
Dewcap diameter: 186 mm
Length of dewcap: 290 mm
Total weight: 9.8Kg (with tube rings)

£1,899.00

APM 107/700 F6.5 ED Triplet APO w 3" APM focuser

The APM 107 refractor features an Ohara FPL 53 Super ED Element in a triplet configuration. The 3” APM focuser is made in the Far East by a precision manufacturing company. The APM 107 also features a retractable Dew-Shield to help delay dew formation. The focuser provides 360 Degree rotation for camera framing, has a high load capacity and 1:10 ratio lockable fine-focusing knob.
The APM 107 has a 3” focuser as standard, or you can order an optional Starlight Instruments focuser (please contact us). Both focusers permit fully illuminated imaging with full frame sensors. (Please contact us for automation options).

Imaging accessories for the 107-700 include a 2.5” ED Field Flattener or APM Super Flattener, both of which maintain the focal length. A dedicated 0.75x Massimo Riccardi Reducer is also available, resulting in a 525mm focal length and ultra fast f4.9 focal ratio. Both focuser options provide 360 Degree rotation for perfect camera alignment, high load capacities and 1:10 lockable fine focusing. (Please contact us for options to suit).

Overview:
107mm Triplet Super ED Apochromatic Refractor, focal length 700mm F6.54
FPL-53 Super ED Element, Fully Multi-Coated
Aluminium Tube with Rings
3” APM focuser
Retractable and Lockable Dew-Shield
2” and 1 Ό” Eyepiece Adapters
Finder Shoe Bracket
Travel Case

Technical Specs:

Length 580mm (665mm Observing)
Max Diameter 145mm
Tube Weight 12.6Ibs / 5.7kg
Aperture 107mm
Focal Length 700mm
Focal Ratio f6.5
Resolution 1.07” Arc Seconds
Limit Value 11.9 Magnitude
Max Mag 214x

Focal reducers: While the APM 107 APO does not have a dedicated field flattener, there are several aftermarket options available depending on your CCD camera. Please contact us for advice.

Skywatcher Esprit 120 ED PRO Triplet

F7 120mm APO Triplet Refractor

The new Sky-Watcher Professional ESPRIT 3-Element ED apochromatic refractors are probably this year's most anticipated new telescopes with optical performance rivaling or exceeding similar telescopes from even the most famous high-end brands.

Designed primarily for demanding astro-imagers wanting high-contrast images full of detail with pin-point stars right to the edge of the field and zero detectable colour fringing, even on the brightest of objects!

Click here to see Field Flattener for Esprit 120

Click here to see optional Feathertouch Focuser for Esprit 120

MAIN FEATURES:

• 3-Element Objective Lens, Focal Length 840mm (one Ohara FPL-53 and 2 x Schott lenses)
• 3” CNC Machined 11:1 Rotatable Dual-Speed Linear Power Focuser
• Full-frame Corrected Focal Plane
• Excellent Field Flatness
• Zero detectable Colour Fringing even on Bright Objects
• Metallic High-Transmission Lens Coatings
• Knife-edge Baffled Optical System
• High-precision Mechanical Components
• Aluminium OTA material (superior to plain carbon-fibre for this application)
• Retractable Dew Shield

3” DUAL-SPEED LINEAR POWER FOCUSER

• 3” LPF with 2” and 1.25” eyepiece adaptors and indexed scale
• Zero focus-shift during focusing
• High Load Capacity - holds up to 5kg of accessories whilst focusing and up to 10kg when locked.
• New drawtube with steel sheet held by four large bearings makes focusing smoother than ever
• The smooth focus motion and 11:1 fine focus wheel allows precision adjustment and critical focusing of eyepieces & cameras
• Patent-pending design

ACCESSORIES SUPPLIED:
2” Dielectric Star Diagonal, 28mm 2” LET Eyepiece, 9x50 Right-Angled Erect Image Finderscope, Tube Rings and Dovetail Mounting Bar

Optional Full Format Field Flattener available.

£3,999.00

Skywatcher Esprit 150 ED PRO Triplet

F7 150mm APO Triplet Refractor

The new Sky-Watcher Professional ESPRIT 3-Element ED apochromatic refractors are probably this year's most anticipated new telescopes with optical performance rivaling or exceeding similar telescopes from even the most famous high-end brands.

Designed primarily for demanding astro-imagers wanting high-contrast images full of detail with pin-point stars right to the edge of the field and zero detectable colour fringing, even on the brightest of objects!

FEATURES:

• 3-Element Objective Lens, Focal Length 1050mm (one Ohara FPL-53 and 2 x Schott lenses)
• 3” CNC Machined 11:1 Rotatable Dual-Speed Linear Power Focuser
• Full-frame Corrected Focal Plane
• Excellent Field Flatness
• Zero detectable Colour Fringing even on Bright Objects
• Metallic High-Transmission Lens Coatings
• Knife-edge Baffled Optical System
• High-precision Mechanical Components
• Aluminium OTA material (superior to plain carbon-fibre for this application)
• Retractable Dew Shield

3” DUAL-SPEED LINEAR POWER FOCUSER

• 3” LPF with 2” and 1.25” eyepiece adaptors and indexed scale
• Zero focus-shift during focusing
• High Load Capacity - holds up to 5kg of accessories whilst focusing and up to 10kg when locked.
• New drawtube with steel sheet held by four large bearings makes focusing smoother than ever
• The smooth focus motion and 11:1 fine focus wheel allows precision adjustment and critical focusing of eyepieces & cameras
• Patent-pending design

Click here to see Skywatcher Field Flattener for Esprit 150

Click here to see optional Feathertouch focuser for Esprit 150

ACCESSORIES SUPPLIED:

2” Dielectric Star Diagonal, 28mm 2” LET Eyepiece, 9x50 Right-Angled Erect Image Finderscope, Tube Rings and Dovetail Mounting Bar.

£2,848.00

Skywatcher Esprit 120 Triplet Refractor with 3" Feathertouch Focuser

F7 120mm APO Triplet Refractor

The new Sky-Watcher Professional ESPRIT 3-Element ED apochromatic refractors are probably this year's most anticipated new telescopes with optical performance rivaling or exceeding similar telescopes from even the most famous high-end brands.

Designed primarily for demanding astro-imagers wanting high-contrast images full of detail with pin-point stars right to the edge of the field and zero detectable colour fringing, even on the brightest of objects!

MAIN FEATURES:

• 3-Element Objective Lens, Focal Length 840mm (one Ohara FPL-53 and 2 x Schott lenses)
• 3” Dual Speed Feathertouch Rack and
Pinnion Focuser
• Full-frame Corrected Focal Plane
• Excellent Field Flatness
• Zero detectable Colour Fringing even on Bright Objects
• Metallic High-Transmission Lens Coatings
• Knife-edge Baffled Optical System
• High-precision Mechanical Components
• Aluminium OTA material (superior to plain carbon-fibre for this application)
• Retractable Dew Shield

• 3” LPF with 2” and 1.25” eyepiece adaptors and indexed scale

ACCESSORIES SUPPLIED:
2” Dielectric Star Diagonal, 28mm 2” LET Eyepiece, 9x50 Right-Angled Erect Image Finderscope, Tube Rings and Dovetail Mounting Bar

Optional Full Format Field Flattener available.

Skywatcher Esprit 100 ED PRO Triplet

Sky-Watcher Professional ESPRIT 3-Element ED apochromatic refractors offer optical performance rivaling or exceeding similar telescopes from even the most famous high-end brands.

Designed primarily for demanding astro-imagers wanting high-contrast images full of detail and zero detectable colour fringing, even on the brightest of objects!

An M48-fitting doublet field flattener is also available to flatten the field and minimize aberration and distortion. When used with the field flattener the Esprit-100's imaging circle is 40mm.

The M48 fitting provides a large clear aperture to reduce halation and a precision thread ensures the triplet and doublet lens groups are precisely aligned on the optical axis perpendicular to the image.

Price includes storage case

Features
Premium optical materials
Short focal length and full frame corrected focal plane
Excellent field flatness across a 40mm imaging circle when used with the optically-matched flattener
Precision linear power focuser
Metallic high-transmission lens coatings
Light-baffled optical systems
Telescope tube attachment hardware
Knife-edge Baffled Optical System
3” Dual Speed Linear Power Focuser

3” LPF with 2” and 1.25” eyepiece adaptors and indexed scale
Zero focus-shift during focusing
High Load Capacity
New drawtube with steel sheet held by four large bearings makes focusing smoother than ever
The smooth focus motion and 11:1 fine focus wheel allows precision adjustment and critical focusing of eyepieces & cameras
Patent-pending design

Technical Specs:

Optical Design : Apochromatic Triplet with ED element
Diameter : 100mm
Focal Length : 550mm
F-ratio : f/5.5
Linear Power Focuser Diameter : 3"
Tube Weight : 6.3 kg
Tube Dimensions : 10.5 x 47 cm

£4,845.00

Skywatcher Esprit 150 ED PRO Triplet with 3" Feathertouch Focuser

F7 150mm APO Triplet Refractor with 3" Feathertouch Rack and Pinnion Focuser.

The new Sky-Watcher Professional ESPRIT 3-Element ED apochromatic refractors are probably this year's most anticipated new telescopes with optical performance rivaling or exceeding similar telescopes from even the most famous high-end brands.

Designed primarily for demanding astro-imagers wanting high-contrast images full of detail with pin-point stars right to the edge of the field and zero detectable colour fringing, even on the brightest of objects!

FEATURES:

• 3-Element Objective Lens, Focal Length 1050mm (one Ohara FPL-53 and 2 x Schott lenses)
• 3” Feathertouch Dual Speed Rack and
Pinnion Focuser
• Full-frame Corrected Focal Plane
• Excellent Field Flatness
• Zero detectable Colour Fringing even on Bright Objects
• Metallic High-Transmission Lens Coatings
• Knife-edge Baffled Optical System
• High-precision Mechanical Components
• Aluminium OTA material (superior to plain carbon-fibre for this application)
• Retractable Dew Shield

• 3” LPF with 2” and 1.25” eyepiece adaptors
ACCESSORIES SUPPLIED:

2” Dielectric Star Diagonal, 28mm 2” LET Eyepiece, 9x50 Right-Angled Erect Image Finderscope, Tube Rings and Dovetail Mounting Bar.

Skywatcher Esprit 80 ED Pro Triplet

Sky-Watcher Professional ESPRIT 3-Element ED apochromatic refractors are instruments of the highest quality with optical performance rivalling or exceeding similar telescopes of even the most famous high-end telescope brands.

The ESPRIT Super Apo Triplets are designed for the most demanding astro-imagers, for use with the optional M48 field flattener, but are also fine telescopes for visual observations. The premium, superbly-corrected optical systems deliver high-contrast images full of detail and zero detectable colour fringing, even on the brightest of objects.

MAIN FEATURES:

3-Element Objective Lens, Focal Length 400mm (one Ohara FPL-53 ED element)
2.7” CNC Machined 11:1 Dual-Speed Linear Power Focuser
Zero detectable Colour Fringing even on Bright Objects
Metallic High-Transmission Lens Coatings
Knife-edge Baffled Optical System
High-precision Mechanical Components
Aluminium OTA material (superior to plain carbon-fibre for this application)
Fixed Dew Shield
OTA Weight 3.97kg (without accessories)
2.7” DUAL-SPEED LINEAR POWER FOCUSER

2.7” LPF with 2” and 1.25” eyepiece adaptors and indexed scale
Zero focus-shift during focusing
High Load Capacity
The smooth focus motion and 11:1 fine focus wheel allows precision adjustment and critical focusing of eyepieces & cameras
ACCESSORIES SUPPLIED:

2” Dielectric Star Diagonal, 9x50 Right-Angled Erect Image Finderscope, 45mm Dovetail Mounting Shoe, Heavy Duty Foam-Lined Storage/Transportation Case with Wheels.

£110.00

Skywatcher Startravel 80 Optical Tube with rings

The Skywatcher Startravel 80 is an 80mm F5 achromatic refractor with a decent rack and pinnion focuser.

It comes complete with tube rings and makes an excellent little guidescope or travel rich field telescope.

£479.00

Skywatcher Evostar ED80 DS-PRO Package

The new EVOSTAR DS-PRO Series ED Apochromatic refractors in their stunning Black-Diamond livery, house premium optics of the same quality and performance level as our legendary Equinox series, making them superb instruments for both imaging and visual observations.

Apochromatic Refractors, due to their unobstructed, text-book like diffraction patterns, produce the sharpest, highest quality optical imaging available, bar-none, aperture for aperture, of any telescope optical system.

These high-end telescopes all feature a doublet objective lens. One element is made from premium Japanese Ohara FPL-53 Extra-Low Dispersion (ED) glass, which virtually eliminates chromatic aberration to deliver true colour reproduction. Top quality Schott glass is utilized for the Crown element.

Each air-to-glass lens surface has exotic anti-reflection metallic coatings applied, to ensure optimum light through-put of approaching 99.5%!!

The proprietary Sky-Watcher “Metallic High-Transmission Coatings” (MHC) are the finest photon anti-rejection coatings in their class.

Technical Specs:

Package Includes

Evostar DS-PRO 80mm F/7.5 optical tube assembly (OTA).
Optics made in FPL-53 glass.
2" (50.8mm) Di-Electric Star Diagonal.
2" Eyepiece 28mm LET.
9x50 Finderscope.
Dual speed 11:1 2" Crayford focuser.
Tube rings and mounting plate.
Aluminium carrying and storage case.

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