Best Focal Length For Astrophotography

Sky-Watcher Star Adventurer 2i Pro Pack – Motorized DSLR Night Sky Tracker Equatorial Mount for Portable Nightscapes Time-Lapse and Panoramas – Wi-Fi App Camera Control – Long Exposure S20512

  • Portable nightscape tracking platform: Motorized portable tracking platform perfect for capturing incredible detail of the Milky Way, eclipses and other astronomical objects..
  • Wide-field astrophotography: The unique, modular design allows for integration with existing photographic tripods. Wide-field astrophotography as well as time-lapse video and telescopic use are all possible with the Star Adventurer 2i..
  • New features: The new, upgraded Star Adventurer 2i includes Wi-Fi, allowing for smartphone control using Sky-Watcher’s free SAM Console app..
  • Equarorial base: Deluxe Equatorial base helps position the Star Adventurer 2i at the perfect angle for polar alignment..
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VILTROX NF-M43X 0.71x Nikon F Lens to Micro Four Thirds Camera Mount Adapter, Enlarge Aperture Speed Booster,Manual Infinity Focus

  • Build-in 4 groups,5pcs optical glasses,manually adjust aperture .(F2-F8 adjusting scale ).Allowing you to get in the larger area of light and achieve the depth of field that you prefer..
  • Reduced imaging focal length, the actual focal length after using mount adapter for 0.71 times the focal length..
  • PLEASE NOTE :While this adapter allows users to mount a Nikon F lens on their Micro Four Thirds camera, automatic functions such as autofocus and electronic aperture control will not be supported..
  • Ring at the bottom with 1/4 screws, which can easy installed on the tripod or other fixed bracket..
  • it comes with 60-Days return-back guarantee when you received the item but you do not satisfied with our item..
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GuDoQi Magnifying Glasses with Light for Close Work 4 Interchangeable Lens 10X 15X 20X 25X Jewelers Loupe Hands Free Reading Magnifying Glass for Watch Repair

  • Single Eye Observation: Considering its character of area observation, it is suggested to observe with one eye. It can't focus when you use two eyes....
  • Focal Length: The higher magnification is, the shorter focal length will be. Adjust focal length from 0.2 to 1.8 inch (0.5-4.6cm) by changing....
  • Replaceable Lens: 4 Pairs of lens with different magnifications (10X, 15X, 20X, 25X) are included. For a larger grand review please refer to lower....
  • Humanized Design: With adjustable LED light, it can help you work in the low-light. Detachable bracket and headband ensure tight wearing and reduce....
  • Wide Using and Note: It can be used in mechanical processing, electronic repair, jewelry appraisal, timepieces repair and miniature engraving etc,not....
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Fujifilm XF55-200mmF3.5-4.8 R LM OIS

  • 55 200mm focal length, Minimum focus distance 1.10m/43.41 inch.
  • 83 300mm equivalent focal length on APS C cameras.
  • Image stabilization (4.5 stops claimed), 62mm filters.Batteries is not Included since batteries are not required.
  • Fujifilm X mount for X series interchangeable lens cameras.
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Jewelry Loupes,Magnifying Glass Jewelers Loupe 10X 20X LED Headband Magnifier Illuminated Eye Loupe Watch Repair Tool Kit Head Mounted Magnifying Glass Coin Stamp Currency Book Errors Magnifier Glass

  • Left right double eye patches magnifierloupe with adjustable LED to help work in low-light conditions.Set of 2 magnifying glasses mounted on a....
  • Handsfree eyeglasses, bracket and headband are interchangeable to ensure more comfortable and tight wearing.Comfortable eyeglass frame or switch to....
  • Focal Length: The higher magnification is, the shorter focal length will be. Adjust focal length from 0.2 to 10.2 inch (0.5-25.9cm) by changing....
  • Mechanical processing, electronic repair, jewelry appraisal, timepieces repair and miniature engraving etc. Included 10x 20x Lens ,★★★ Too high....
  • HOBBIES- These are super handy for a whole range of applications and hobbies where fine detail and closer inspection is required. Use for jewellery....
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Canon EOS Rebel XS / 1000D For Dummies

  • 50 millimeter focal length and maximum aperture of f/1.8.
  • Great for portraits, action, and nighttime photography.
  • Angle of view (horizontal, vertical, diagonal): 40º, 27º,46º.
  • Minimum focusing distance of 1.15 feet (0.35 meter) and a maximum magnification of 0.21x.
  • Stepping motor (STM) delivers near silent, continuous move Servo AF for movies and smooth AF for stills.
  • 80 millimetre effective focal length on APS C cameras, 50 millimetre on full frame cameras. Lens construction: 6 elements in 5 groups.
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Lens Mount Adapter EF-EOS M2 Auto-Focus 0.71x Speed-Booster Control Ring for Canon EF Lens to Canon EOS-M (EF-M Mount) Mirrorless Cameras M M2 M3 M5 M6 M10 M50 M100

  • Compatibility: EF-EOS M2 lens converter allow Canon EF mount series lenses to work with Canon EF-M mirrorless cameras M M2 M3 M5 M6 M10 M50 M100.
  • 0.71x Focal Reducer : Focal length is multiplied by 0.71 based on the original ( equivalent focal length = focal length x 0.71 ), which helps enlarge 1 level aperture.
  • Strong Functions: auto focusing function, increasing the lens 1 f-stop and the amount of light into the virtual background, better highlight the theme.
  • Wonderful Performance: use PIN gold needle to transmit signal, greatly enhancing its transmission performance.
  • optical glasses built in 4 groups / 4 glasses.
  • enjoy EXIF signal transmission, AF(auto-focus) and adjustable aperture, etc..
  • Equipped with USB interface, convenient for software upgrade.
  • achieve perfect new functions of the lens mount adapter and fix bugs according to follow-up upgrades.
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Tamron AF 10-24mm f/3.5-4.5 SP Di II LD Aspherical (IF) Lens for Pentax Digital SLR Cameras B001P (Model B001P) (Renewed)

  • This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com.
  • 15-36mm equivalent focal length on APS-C cameras, 16-38.4mm equivalent focal length on APS-C cameras.
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Canon EF 50mm f/1.8 STM Lens

  • 50 millimeter focal length and maximum aperture of f/1.8.
  • Great for portraits, action, and nighttime photography.
  • Angle of view (horizontal, vertical, diagonal): 40º, 27º,46º.
  • Minimum focusing distance of 1.15 feet (0.35 meter) and a maximum magnification of 0.21x.
  • Stepping motor (STM) delivers near silent, continuous move Servo AF for movies and smooth AF for stills.
  • 80 millimetre effective focal length on APS C cameras, 50 millimetre on full frame cameras. Lens construction: 6 elements in 5 groups.
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Canon EF 85mm f1.2L II USM Lens for Canon DSLR Cameras - Fixed

  • Ring-type UltraSonic motor (USM), Focal length : 85mm, Closest focusing distance : 3.2 feet.
  • EF mount, medium telephoto lens, High-speed AF and circular aperture create shallow depth-of-field.
  • 111mm focal length for APS-H sensors, 136mm for APS-C sensors, Lens not zoomable.
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