Under $200

Description Converts 60mm thread to 53mm thread Available for FL and ED OTAs. Specs Optical Path Length 4mm Weight 22g Warranty Vix...

Description Converts 53mm thread to 43mm thread Available for FL and ED OTAs. Specs Optical Path Length 3mm Weight 19g Warranty Vix...

Description For stable astrophotography Stable astrophotography can be available. Vixen's Weight Shaft Camera Bracket allows for the attachment ...

On this episode of How Do You KNOW? Dr Daniel Barth will be discussing what all is involved in the Fine Tuning of Nature.  Because we tend to suspe...

Features 3x Magnification Carry Case Included Lanyard Description Be ready whenever adventure calls with the lightweight National Geographi...

Description For smooth setting up of POLARIE and AP equatorial mount The polar meter is a "unlikely" design that summarizes level, compass and in...

Features Possible to store different size eyepiece You can use the partition and lid as storage space The grey reflective tape stitches along the...

Description It allows you to use an polar alignment scope PF-LII, polar alignment scope PF-L or SX polar axis scope for the POLARIE U. The polar s...

Features Very high sharpness and contrast across the entire field of view Almost no color defects due to lanthanum glass Twist-Up eyecup for peop...

Features Very high sharpness and contrast across the entire field of view Almost no color defects due to lanthanum glass Twist-Up eyecup for peop...

Description Connects Telescope, Spotting Scope with DSLR Camera The T Ring is designed to be used for Astrophotography in conjunction with other ...

Description Connects Telescope, Spotting Scope with DSLR Camera The T Ring is designed to be used for Astrophotography in conjunction with other ...

Description Connects Telescope, Spotting Scope with DSLR Camera The T Ring is designed to be used for Astrophotography in conjunction with other ...

Description Block stray light for the astrophotographer Water-resistant rubber heater. Reduces dew on objective lens and primary mirror. Specs ...

Features High-quality NPL eyepiece with 50° field of vision Good contrast and reduced color aberrations Eyepoint distance: 3.0 mm Connection: 31....

Features High-quality NPL eyepiece with 50° field of vision Good contrast and reduced color aberrations Eyepoint distance: 3.0 mm Connection: 31....

Features High-quality NPL eyepiece with 50° field of vision Good contrast and reduced color aberrations Eye relief: 11 mm Connection: 31.7 mm, 1 ...

Features High-quality NPL eyepiece with 50° field of vision Good contrast and reduced color aberrations Eye relief: 2.3 mm Connection: 31.7 mm, 1...

Features High-quality NPL eyepiece with 50° field of vision Good contrast and reduced color aberrations Eye relief: 24 mm Connection: 31.7 mm, 1 ...

Features High-quality NPL eyepiece with 50° field of vision Good contrast and reduced color aberrations Eye relief: 15 mm Connection: 31.7 mm, 1 ...

Features High-quality NPL eyepiece with 50° field of vision Good contrast and reduced color aberrations Eye relief: 4.5 mm Connection: 31.7 mm, 1...

Features High-quality NPL eyepiece with 50° field of vision Good contrast and reduced color aberrations Eye relief: 6.5 mm Connection: 31.7 mm, 1...

Essential for Time-Lapse Photography Specs Connecting to the POLARIE U 2.5mm stereo mini plug Connecting to the camera Accessory remote t...

Essential for Time-Lapse Photography Specs Connecting to the POLARIE U 2.5mm stereo mini plug Connecting to the camera Multi-connector pl...

Description Camera Adapter for Telescope Eye Projection Photography Attachable to flip mirror or R200SS focuser. ※Not usable with LVW series eye...

Features A long eye-relief of 15mm prevents you from eye fatigue for long observation. The incorporated roof prisms allow the Multi monocular for...

Features Reveals Details of Artwork and Crafts Fully Coated Optics Ribbed Rubber Focus Collar Fold-Down Rubber Eyecup BK7 Roof Prism Exceptionall...

Features Reveals Details of Artwork and Crafts Fully Coated Optics Ribbed Rubber Focus Collar Fold-Down Rubber Eyecup BK7 Roof Prism Exceptionall...

Features Elegant beauty and durable and sharp texture "Japanese" binoculars Lenses are multi-coated Large eye relief for comfortable observation ...

In order to unlock the mysteries of the corona, but also to protect a society that is increasingly dependent on technology from the threats of s...

Today, astronomers and researchers, both professional and amateur, have unprecedented access to online science data, allowing a greater unders...

The first positive detection of water ice on Mars was from the Phoenix Lander that scraped away some surface dust to reveal pristine ice belo...

Humans have been obsessed with the measurement of time perhaps as far back as 100,000 years ago. Dr. Barth guides us through evidence of meas...

Stromatolite fossils are a dominant record of life for most of Earth’s history prior to the appearance of complex, multicellular organisms. S...

  Schedule Updated 9/21/2022 We are excited to announce the second Ariz...

In 2019, NASA announced that an international team had found sugars essential to life in meteorites. The discovery added to the growing list o...