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Telescopes > Agema Optics > Agema Optics Apochromatic refractor AP 130/1040 SD 130 F8 OTA
Product no.: 52871

Apochromatic refractor AP 130/1040 SD 130 F8 OTA

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Product description

AGEMA SD Apochromats: a line of Doublet Apochromatic Refractors with exclusive optical design, that provides spectacular high-contrast star and planet viewing with great color correction!

Optical Design: The objective of the Agema Apo is a fluorite-doublet featuring a glass-in-front combination. Putting the glass in front protects the fluorite from any external influences. Agema Optics use the highest quality optical materials for lens production, including glass that never undergoes secondary molding or annealing, and fluorite with optimal crystal orientation and uniform internal structure. Their complex lens cell eliminates the risk of deforming the optical components and protects them during telescope transportation. The cell design allows for fine adjustment of the lenses without disassembly — an important advantage. Agema use fluorite with unique dispersion properties, resulting in an optical system with a high chromatic aberration correction. The amplitude of residual deviation is 2.5–3 times smaller than the Abbe criterion for apochromatic lenses. The system’s Polychromatic Strehl Ratio exceeds 90% for the entire 430–700nm visual range.

By carefully selecting the glass and fluorite and using the refractive index data from the actual glass melt, Agema produce optics precisely fabricated according to calculated design. Their improved polishing process provides higher quality surface and in combination with low light scattering of fluorite it delivers excellent contrast images.

Each lens is individually controlled during manufacturing and again at final assembly. All optical elements have Broad Band Anti-Reflection coating.

Tube: The aluminum tube has internal baffles with knife edges that suppress indirect stray light. The tube is equipped with an extendable dew cap that reduces the entry of stray light and the chance of dew on the front lens. The inner surface is matte black; the exteriors are powder coated for a durable finish.

The focuser has 125 mm of travel and dual-speed operation with an approximate ratio of 1:10. The backlash-free motion mechanism accomplishes a reliably smooth operation you can count on. Fixing the movable tube in any position is achieved with the drum-type brake conveniently located directly on the pinion shaft. This prevents damage to the rack if accidentally forced without releasing the brake. The focuser has all the necessary adjustments, including friction control that provides the ability to support different equipment weights.

Specifications

Optics


Type
Refractor
Type of build
Apochromat
Aperture (mm)
130
Focal length (mm)
1040
Aperture ratio (f/)
8
Resolving capacity
0,88
Limit value (mag)
12,4
Light gathering capacity
340
Max. useful magnification
260
Tube length (mm)
942
Tube weight (kg)
9,5
tube diameter (mm)
193
Stray light baffles in the OTA
yes
Tube material
Aluminium
Tube construction
Full tube
lens design
Doublet

Focuser


Motorized
no
Gear reduction
1:10 Fine movement
Adjustment range (mm)
125
Free aperture (mm)
89
Backfocus (mm)
178

Mount


Type of build
OTA
Mounting type
no mount
GoTo control
no

Included accessories


Dew Shield
yes
Finder scope
6x30
Tube clamps
yes
Prism rail
Losmandy-Style
Carrying handle
yes
Eyepiece adaptor
2" - 3,5"
Corrector
without
Transport cases
no

Area of application


Astrophotography
yes
Moon & Planets
yes
Nature Observation
no
Nebulae & galaxies
yes
Sun
no (Only with appropriate Sun filter)

Recommended for


Beginners
no
Advanced
yes
Observatories
yes

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*All prices include VAT plus shipping costs.

Agema Optics Apochromatic refractor AP 130/1040 SD 130 F8 OTA
Agema Optics Apochromatic refractor AP 130/1040 SD 130 F8 OTA
Agema Optics Apochromatic refractor AP 130/1040 SD 130 F8 OTA

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