ReviewsFocal Length For Astrophotography

Canon 28mm f/3.5 FD-Mount Manual Focus Lens

  • Focal length and maximum aperture: 35mm 1:2.
  • Lens construction: 10 elements in 8 groups.
  • Rear focusing system with USM focus adjustment.
  • Closest focusing distance: 0.24m/0.79 ft,Focal Length : 35mm Comparable APS-C 1.6x Focal Length: 56 mm.Lens Construction:10 elements in 8 groups.
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Canon EF 35mm f/2 IS USM Wide-Angle Lens

  • Focal length and maximum aperture: 35mm 1:2.
  • Lens construction: 10 elements in 8 groups.
  • Rear focusing system with USM focus adjustment.
  • Closest focusing distance: 0.24m/0.79 ft,Focal Length : 35mm Comparable APS-C 1.6x Focal Length: 56 mm.Lens Construction:10 elements in 8 groups.
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QWORK Headband Magnifier, Double Optical Lens Head-Mounted Reading Magnifier Hands Free Jeweler Loupe, 4 Replaceable Lenses for Reading, Repair (1.5X,2.0X,2.5X,3.5X)

  • 4 Replaceable Lenses: 1.5x 20" focal length / 2.0x 10" focal length / 2.5x 8" focal length / 3.5x 4" focal length, meeting your different magnification needs..
  • Comfortable to Wear: Adjustable headband makes the head more comfortable and tighter to wear. Lightweight material and soft breathable foam for comfort while operating..
  • Easy to Use: Two knobs on either side adjust the height of the magnifier to meet your viewing angle requirements. The visor can be tilted up and down as needed and moved out of the way when no longer needed..
  • Material: The housing frame is made of lightweight, durable and impact resistant materials, long term service..
  • Application: Perfect for jewelry work, reading, painting, repairing, sewing, soldering, jewelry making, needlework, arts and crafts and other hobbies..
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Telescope for Kids (400 x 70mm), 120X Kids Telescope (Adjustable Height), Telescopes for Astronomy Beginners with Phone Adapter and Storage Bag

  • ...5-7 years old. It will allow your amateur astronomer to view the galaxy like a pro!.
  • Out of This World Optics - Our kids telescope has the perfect combination of a low f/ratio, and Barlow lens with 120x magnification, making it the best telescope for kids 8-12. Use this stargazing telescope to take out of this world astrophotography images of star clusters, galaxies, the Milky Way, and more! And, with 120x magnification, this astronomical telescope can view the craters of the moon! Capturing astronomical images has never been easier or more exciting!.
  • High-Quality, Kid-Friendly Fun - Unlike other kids telescopes, your new childrens telescope includes a fun stargazing guide to make learning about space fun! This telescope for kids 4-6 years old also include a high-quality storage bag, accessories tray, smartphone attachment to easily capture space images, and a unique compass to help your budding astronomer learn valuable directional skills! This telescope for viewing planets is the perfect birthday or Christmas gift for children!.
  • Easy Tripod Set Up - Our refractor childrens telescope includes an adjustable, highly stable tripod made with reinforced aluminum alloy. Unlike some telescopes for beginners, our telescopes for kids can be adjusted for table u....
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Nikon AF-S FX NIKKOR 200-500mm f/5.6E ED Vibration Reduction Zoom Lens with Auto Focus for Nikon DSLR Cameras (Renewed)

  • Fast f/2.8 constant aperture with an electromagnetic diaphragm.
  • Sensational image quality and sharpness with virtually no distortion, Focal Length Range : 24 to 70 millimeter.
  • Minimum Focus Distance : 35 to 50 millimeter focal length : 1.2 feet (0.38 meter) from focal plane.
  • 24, 28, 70 millimeter focal lengths : 1.3 feet (0.41 meter) from focal plane.
  • 88.0 millimeter maximum diameter x 154.5 millimeter (distance from camera lens mount flange).
  • 4 stops of Vibration Reduction for handheld and low light shooting, Nonstick glass makes it easier to wipe off water, dirt and smudges.
  • Evolution of Nikon's legendary 24 to 70 millimeter workhorse.Type:Fmount, Type E AF S lens with built in CPU and F mount.Lens Elements:20.
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Headband Magnifier Double Lens Head-Mounted Reading Magnifier Loupe Jewelry Visor Opitcal Glass Binocular Magnifier with Lens Magnification-1.5X 2X 2.5X 3.5X

  • 4 Replaceable Clarity Lenses - Optical glass lenses included 1.5X at 20" Focal Length/2.0X at 10" Focal Length/2.5X at 8" Focal Length/3.5X at 4" Focal Length..
  • Head-Mounted Design - The shell frame is made of lightweight, durable and impact resistant materials..
  • Comfort Headband - To easily fit your head and without discomfort. This hands free handband strap improves comfort when wearing..
  • Adjustable Headband - Visor can be tilted up and down as needed, and moved out of the way when no longer required. Can be worn over prescription glasses or safety goggles..
  • Variety Usage - Binocular headband magnifier provides hand-free magnification to meet different magnifying needs: jewelry-making, watch-making, needlework, artwork, electronic inspection, book-reading, print inspection, and stamp-collecting..
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Astromania Off-Axis Guider with Micro-Focusing - for Successful Astronomy Photos Without A Guide Scope

  • ...ider or a crosshair eyepiece. With the generous 10mm of travel allows you will find the optimum sharpness for your guide star. Impressive - this special helical focuser can be adjusted to 0.05mm using the super fine scale. So you can always find the precise focus point very quickly..
  • With an off-axis guider, perfect astrophotography is virtually in your grasp. Long exposure photos require precise tracking, which is the specialty of this guider, making it one of the necessary tools for astrophotography. You will soon have the most beautiful astronomy photos in the bag!.
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MSM Polar Finder – Replace Finderscope for Polar Alignment – Astrophotography Star Pointer on Equatorial Mount – Designed for iOptron SkyGuider Pro(Black)

  • PORTABLE NIGHTSCAPE TRACKING PLATFORM: Motorized portable tracking platform perfect for capturing incredible detail of the Milky Way, eclipses and other astronomical objects.
  • WIFI ENABLED SMARTPHONE CONTROL: Wifi enabled allows smartphone control using Sky Watcher Mini’s FREE SynScan app.
  • 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.
  • EQUATORIAL BASE: Deluxe equatorial base helps position the Star Adventurer at the perfect angle for polar alignment.
  • INCLUDED POLAR SCOPE: Included polar scope with illuminator allows for easy and accurate alignment with Polaris.
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VILTROX EF-EOS M2 Speed Booster 0.71x Lens Mount Adapter for Canon EF Mount Lens to Canon EF-M-Mount Camera EOS M M2 M6 M3 M5 M10 M100 M50

  • ... AUTO FOCUS & APERTURE CONTROL: Featuring a motor-driven iris and a gearbox, the adapter supports high-speed autofocus. You can also adjust the aperture of the lens by controlling the anon EOS M (EF-M Mount) camera..
  • 0.71x LENS MOUNT ADAPTER: The focal length of the lens will be shortened 0.71 times on the base of the original focal length, which means the focal length = focal length x 0.71 camera conversion rate. Built-in optical correction groups, making the effective focal length smaller and the shooting range wider..
  • EXIF TRANSMISSION: EF-EOS M2 lens adapter can transmit the EXIF signals to your camera, dramatically enhance its transmission performance..
  • SUPPORT FIRMWARE UPDATE: Equipped with a USB interface.Through continuous software updates, VILTROX will help users get a better shooting experience by fixing product bugs, adapting to the new EF lens, and providing more lens and camera combinations..
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Sony SELP18105G E PZ 18-105mm F4 G OSS , Black

  • High performance E mount lens with excellent contrast.
  • Minimum Focus Distance : 1.48 (Wide) 3.12 ft (Tele), Maximum Magnification ratio : 0.11x, Focal Length : 18 105 mm.
  • Versatile 27 158mm (35mm equiv.) zoom range. Angle of view (APS C): 76° 15°. Number of aperture blades are 7.
  • Constant F4 maximum aperture throughout the zoom range. Filter diameter (mm):72 mm.
  • It is recommended that you use a lens hood to reduce flare and ensure maximum image quality.Focal Length (mm) 11/16 4 1/8 35 mm equivalent focal length (APS C) 1 1/16 6 3/16 inches.
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Sony SEL16F28 16mm f/2.8 Wide-Angle Lens for NEX Series Cameras

  • Lens not Zoomable. Footnotes:"35 mm equivalent focal length (APS-C)" and "Angle of View (APS-C)" are with interchangeable lens digital camera....
  • Minimum Focus Distance : 0.8 ft (0.24 m).
  • Focal Length : 16 mm. Angle of View (APS-C)- 83°. 35 mm equivalent focal length (APS-C)- 24 mm.
  • Compatible with optional VCL-ECU1 ultra-wide converter and VCL-ECF1 fisheye converter.
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