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Askar 111F APO Flat-Field ED Quadruplet (111F)
ASTRONOMY PLUS
Pickup available,
Usually ready in 2 hours
3008 Rue Brodeur O Unité 307 Saint Alphonse De Granby QC J0E 2A0 Canada
Askar 111F APO Flat-Field ED Quadruplet (111F)
is backordered and will ship as soon as it is back in stock.
Askar 111F APO Flat-Field ED Quadruplet
Self-flattened quadruplet astrograph which can be used for visual observing and astrophotography.
The Askar 111F has 111mm aperture, 766mm focal length, and a native focal ratio of 6.9, suitable for various uses including astrophotography and daily photography.
The Askar 111F adopts a quadruplet lens design (three elements in the front, one in the rear), which includes an ED glass to effectively reduce chromatic aberration.
The main tube features a built-in baffle that further blocks stray light and enhances image quality. The Askar 111F supports full-frame imaging, delivering delicate and sharp stars across the frame.
Featuring a self-flattened design, users can shoot directly after connecting imaging accessories and achieving focus. This eliminates the need for purchasing additional flatteners or calculating back focus, offering simple operation and a smooth experience.
The Askar 111F comes standard with a photographic extension tube, which is designed with a 2-inch filter thread. It includes adapters with M48*0.75 and M54*0.75 specifications, ensuring compatibility with DSLR cameras or astronomy cameras to meet diverse needs.
Adhering to Askar's consistent design philosophy, the Askar 111F emphasizes detail and user experience, striving to reduce the cost of use. The lens hood is retractable, further shortening the overall length and enhancing portability. The lens tube utilizes high-quality CNC machining and painting processes. Its appearance continues the F-series' classic blue and white color scheme, presenting a simple and elegant aesthetic.
The handle of the Askar 111F is equipped with a finder base slot. Additionally, both sides of the focuser feature finder bases. This not only allows for changing the finder scope position without disassembly but also provides more locations for installing other astronomical accessories.
The Askar 111F is equipped with a 3-inch rack-and-pinion dual-speed focuser supporting 1:10 fine adjustment. The fine adjustment knob includes a protective cap to prevent damage. The rear of the focuser connects to a 360° graduated rotator, allowing for precise angle adjustments.
The dovetail plate is a 300mm long Vixen-style plate, equipped with 1/4-inch and 3/8-inch screw holes, enabling direct connection to a tripod.
The Askar 111F, a multi-purpose self-flattened astrograph, starts your versatile deep-sky exploration journey with exceptional cost-effectiveness.
Technical Specifications
Parameters
Aperture size
111mm
Focal length
766mm
Focal ratio
f/6.9
Objective lens
Quadruplet air-spaced APO(including one ED glass)
Image circle
44mm
Maximum accessory connection (with the focuser fully retreated)
Imaging mode: 73mm (from the base of M48×0.75 male thread） 91mm（from the base of M54×0.75 male thread)
Observing mode: 132mm（from the end of 1.25" eyepiece holder） 142mm（from the end of 2" eyepiece holder）
Minimum accessory connection (with the focuser fully extended)
Imaging mode: 43mm (from the base of M48×0.75 male thread） 61mm（from the base of M54×0.75 male thread)
Observing mode: 102mm（from the end of 1.25" eyepiece holder） 112mm（from the end of 2" eyepiece holder）
Total length
664mm(including 1.25" adapter as dew shield contracted） 751mm(including 1.25" adapter as dew shield fully stretched） 728mm(including the photographic adapter as dew shield contracted） 815mm(including the photographic adapter as dew shield fully stretched）
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Askar
Askar 111F APO Flat-Field ED Quadruplet (111F)
Regular price$2,09900
Unit price
Askar 111F APO Flat-Field ED Quadruplet
Self-flattened quadruplet astrograph which can be used for visual observing and astrophotography.
The Askar 111F has 111mm aperture, 766mm focal length, and a native focal ratio of 6.9, suitable for various uses including astrophotography and daily photography.
The Askar 111F adopts a quadruplet lens design (three elements in the front, one in the rear), which includes an ED glass to effectively reduce chromatic aberration.
The main tube features a built-in baffle that further blocks stray light and enhances image quality. The Askar 111F supports full-frame imaging, delivering delicate and sharp stars across the frame.
Featuring a self-flattened design, users can shoot directly after connecting imaging accessories and achieving focus. This eliminates the need for purchasing additional flatteners or calculating back focus, offering simple operation and a smooth experience.
The Askar 111F comes standard with a photographic extension tube, which is designed with a 2-inch filter thread. It includes adapters with M48*0.75 and M54*0.75 specifications, ensuring compatibility with DSLR cameras or astronomy cameras to meet diverse needs.
Adhering to Askar's consistent design philosophy, the Askar 111F emphasizes detail and user experience, striving to reduce the cost of use. The lens hood is retractable, further shortening the overall length and enhancing portability. The lens tube utilizes high-quality CNC machining and painting processes. Its appearance continues the F-series' classic blue and white color scheme, presenting a simple and elegant aesthetic.
The handle of the Askar 111F is equipped with a finder base slot. Additionally, both sides of the focuser feature finder bases. This not only allows for changing the finder scope position without disassembly but also provides more locations for installing other astronomical accessories.
The Askar 111F is equipped with a 3-inch rack-and-pinion dual-speed focuser supporting 1:10 fine adjustment. The fine adjustment knob includes a protective cap to prevent damage. The rear of the focuser connects to a 360° graduated rotator, allowing for precise angle adjustments.
The dovetail plate is a 300mm long Vixen-style plate, equipped with 1/4-inch and 3/8-inch screw holes, enabling direct connection to a tripod.
The Askar 111F, a multi-purpose self-flattened astrograph, starts your versatile deep-sky exploration journey with exceptional cost-effectiveness.
Technical Specifications
Parameters
Aperture size
111mm
Focal length
766mm
Focal ratio
f/6.9
Objective lens
Quadruplet air-spaced APO(including one ED glass)
Image circle
44mm
Maximum accessory connection (with the focuser fully retreated)
Imaging mode: 73mm (from the base of M48×0.75 male thread） 91mm（from the base of M54×0.75 male thread)
Observing mode: 132mm（from the end of 1.25" eyepiece holder） 142mm（from the end of 2" eyepiece holder）
Minimum accessory connection (with the focuser fully extended)
Imaging mode: 43mm (from the base of M48×0.75 male thread） 61mm（from the base of M54×0.75 male thread)
Observing mode: 102mm（from the end of 1.25" eyepiece holder） 112mm（from the end of 2" eyepiece holder）
Total length
664mm(including 1.25" adapter as dew shield contracted） 751mm(including 1.25" adapter as dew shield fully stretched） 728mm(including the photographic adapter as dew shield contracted） 815mm(including the photographic adapter as dew shield fully stretched）
ZWO ASI585MC USB3.0 Color Astronomy Camera - OPEN BOX (ASI585MC)
David W Vandenberg
Excellent Service
Products as described, arrived 3 days before due date.
This is a great deep sky scope, and I am looking forward to getting some great pictures with it, all I need now are some clear skies (it's raining at the moment)
Astronomy Plus Pier Extension for ZWO, iOptron and Sky-Watcher Mounts
Claude Lamarre
ASTRONOMIK MC CLEAR FILTER 2’’ SCT 24 TPI
Se visse directement sur l’adaptateur 2’’ SCT 24 TPI
ASTRONOMIK MC CLEAR FILTER 2’’ SCT 24 TPI
Se visse directement sur l’adaptateur 2’’ SCT 24 TPI , votre dos visuel se visse sur le ASTRONOMIK MC CLEAR FILTER 2’’ SCT 24 TPI.
1) Permet de sceller le tube optique. Une touche de graisse de silicone pure, de qualité, celle pour les équipements de plongée assure l’étanchéité.
2) Empêche les contaminants de s’infiltrer
3) Empêche l’effet cheminée lorsqu’on change un oculaire ou un accessoire par temps froids.
4) Combiné à une isolation thermique de l'OTA un isolant thermique à double face genre REFLECTIX, permet de sortir l’instrument d’un local chauffé vers la température frigide extérieure pour observer immédiatement sans attendre l’équilibrage des températures.
J’ai testé de 25C à 5C, sur deux nuits à l’oculaire clavé 10mm dès l’installation 5 minutes après la sortie de l’instrument, l’image est absolument nette avec seulement la turbulence d’un seeing de 3-4, et ce durant toute la durée de la séance.
Images de Saturne au MK127 de SVBONY F:1500mm, Caméra ZWO ASI 678MC au foyer primaire, Filtre 1.25" Baader contrast boost, capture .SER, Sharpcap, PIPP, AS4!, registax 6.
Les photos sont un stack des images brutes stabilisé de PIPP, et l'autre un léger traitement dans Registax 6.
Le 27 octobre vers 21h30 5 à 10 minutes après avoir sorti l’instrument, viewing 3/5. Hier avec barlow QT 2,25x Baader, résultat similaire. C'est ce que j'espérait, les tests se poursuivre.
Astronomik MC-clear Filter
Darus
Helpful staff and competitive pricing make them a solid choice
Astronomy Plus is a reliable Canadian retailer specializing in telescopes and astrophotography gear.
Their product selection is excellent — everything from smart telescopes like the Seestar series to mounts, cameras, filters, and accessories from top brands. Items arrive in perfect condition and are well-stocked.
Shipping is impressively fast!
Astronomy Plus – Telescopes & Astrophotography Canada
Clever tube end covers for my non-standard home-built 10" Newtonian
Clever tube end covers for my non-standard home-built 10" Newtonian. Kind of like shower caps, but they are of heavy-duty material. I haven't yet tested them to see if they will keep out enough light to shoot dark flats, but I think they will be.
