apochromatic
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21 news items found relating to apochromatic
Ultra-Cat 108 WIFD
Tuesday, January 21, 2025 by Freeman Lightner
William Optics releases the Ultra-Cat 108 WIFD, a 108mm apochromatic refractor telescope built for astrophotographers seeking high performance. The telescope features a 5-element Petzval optical structure that eliminates field curvature. This ensures sharp, flat-field images without the need for additional flatteners, a common challenge for many astrophotographers. The ...
Redcat 91 review by AstroBackyard
Friday, January 3, 2025 by Richard Harris
The William Optics RedCat 91 is an apochromatic refractor designed for astrophotography. Its 5-element Petzval design eliminates the need for backfocus adjustments, providing sharp, edge-to-edge images. The telescope is compatible with full-frame and medium-format cameras, offering a 50mm image circle and flat-field optics that do not require an additional flattener. It...
New telescopes in 2024
Wednesday, December 18, 2024 by Freeman Lightner
Nearly 20 new telescope models have been released in 2024 alone, highlighting the remarkable growth and vitality of the astronomy hobby. This surge in innovation reflects the increasing interest in stargazing and astrophotography among both beginners and seasoned enthusiasts. While some manufacturers have unfortunately shuttered their operations due to market pressures ...
Does telescope size really matter
Tuesday, December 17, 2024 by Richard Harris
Who could have imagined that optics the size of a standard finder scope would prove to be so valuable in astrophotography? But the Redcat 51 from William Optics, despite its compact 2-inch aperture, has earned a reputation for delivering impressive results on just about any object you point it at in the night sky. As a refractor telescope with a focal length of jus...
TEC 140 F9.6 Fluorite Doublet announced
Wednesday, November 27, 2024 by Richard Harris
At the beginning of October, Telescope Engineering Company (TEC) introduced its new 140mm F9.6 Fluorite Doublet. Originally designed with a 140mm F10.5 glass combination, the initial materials did not meet long-term reliability standards. Upon advice from the glass manufacturer that the original choice would be discontinued, TEC opted for a more stable, albeit more cost...
RedCat 91 WIFD arrives from William Optics
Sunday, November 24, 2024 by Richard Harris
William Optics has announced the launch of the RedCat 91 WIFD, an advanced apochromatic refractor telescope designed to elevate the astrophotography experience for both amateurs and professionals. This latest addition to the esteemed Cat series combines cutting-edge optical performance with innovative design features, setting a new standard in the field."The cat wi...
Sky Rover Optics 12x56 15x56 APO binoculars released
Tuesday, November 12, 2024 by Richard Harris
Sky Rover Optics is proud to announce the release of its cutting-edge Banner Cloud series of APO binoculars, now available in multiple models including the 8x42, 10x42, 10x50, 12x50, 12x56, and 15x56. Designed for outdoor enthusiasts, bird watchers, stargazers, and concertgoers alike, the Banner Cloud APO binoculars combine high-quality optics with durable, portable con...
Seestar S30 telescope specifications and photos
Sunday, November 3, 2024 by Richard Harris
ZWO has just unveiled the Seestar S30 Smart Telescope, a smaller yet more powerful follow-up to the Seestar S50 (I own one). This latest model promises greater image clarity, improved color accuracy, and increased versatility for both novice and seasoned astrophotographers. This comes right on the heels of the latest firmware update to the S50 that now allows mosiac mod...
Redcat 51 astrophotography: Small telescope with BIG rewards
Wednesday, October 16, 2024 by Kay Ogetay
Editors note: Who could have imagined that optics the size of a standard finder scope would prove to be so valuable in astrophotography? But the Redcat 51 from William Optics, despite its compact 2-inch aperture, has earned a reputation for delivering impressive results on just about any object you point it at in the night sky. As a refractor telescope with a focal...
Fujiyama HD-OR eyepieces from Kokusai Koki
Thursday, August 22, 2024 by Richard Harris
Kokusai Kohki has introduced a new series of Orthoscopic eyepieces known as the Fujiyama HD-OR lineup. These eyepieces are produced with a focus on maintaining the high standards of quality associated with Japanese craftsmanship. Manufactured at the company’s Tokyo facility, each Fujiyama HD-OR eyepiece undergoes a thorough inspection before being shipped, ensurin...
Airy Disk APO 204mm Refractor
Monday, August 5, 2024 by Russ Scritchfield
The Airy Disk APO 204mm f/7 Triplet ED FK61 Apochromatic Refractor is a telescope designed for detailed astronomical observations and imaging. It is available for $13,410.00 and offers a range of features aimed at providing clear and accurate views of celestial objects. Airy Disk APO 204mm f/7 Triplet ED FK61 Apochromatic Refractor APO This telescope features a 20...
Vaonis Vespera II smart telescope upgrades and reviews
Monday, July 15, 2024 by Richard Harris
The Vaonis Vespera II smart telescope brings notable improvements over its predecessor, featuring enhanced optical systems, advanced imaging capabilities, and user-friendly design and connectivity. Additionally, we have gathered insights from several astronomers to provide a comprehensive overview of the telescope’s performance and features. Vaonis Vespera II s...
Astrophotography filters: How narrow is too narrow
Saturday, June 29, 2024 by Jim Thompson
For many years now I have been promoting the idea that for emission nebulae, whether you have light pollution (LP) or not, the narrower your filter’s pass bands are, the better. Time and again my test results have demonstrated this relationship to be true; that object contrast and signal-to-noise-ratio (SNR) increase as the pass band width decreases. Recently howe...
DWARF 3 smart telescope pre-orders now open
Thursday, May 30, 2024 by Richard Harris
DwarfLab has announced the DWARF 3 smart telescope is now available for pre-order, promising to make astrophotography accessible to enthusiasts everywhere. Its compact size and automatic setup aims to let users capture stunning images of celestial objects such as the Moon, Sun, Milky Way, galaxies, and nebulae within minutes. Additionally, the DWARF 3 is versatile ...
New APO refractor from Vixen: SD103SII released
Friday, May 24, 2024 by Freeman Lightner
Vixen has introduced the SD103SII Optical Tube Assembly, an upgraded apochromatic refractor designed for both visual observation and astrophotography. Priced at $2141.99, this new model promises superior performance and stunning star images. Introducing the new Vixen SD103SII APO refractor The SD103SII, a worthy successor to the SD103S, is part of Vixen&...
Deep space astrophoto targets for May of 2024
Friday, May 3, 2024 by Richard Harris
As spring blossoms into its full glory in May 2024, so does the night sky light up with stellar photographic opportunities. From the spiraling elegance of the Whirlpool Galaxy to the dense sparkle of the Hercules Globular Clusters, the cosmos offers a visual feast for astrophotographers. This season, as the earth renews, the heavens too unveil their most captivating cel...
APM MS 16x80 EDL APO Magnesium Series binoculars
Thursday, April 25, 2024 by Richard Harris
Years ago, high-quality 80mm binoculars were often prohibitively expensive. Now, with the APM MS ED-L series, we provide top-notch apochromatic binoculars at an attractive price. Our 16x80 model excels in both optical and mechanical design. It features a 5mm exit pupil and over 30% more light-gathering capability than 70mm models, enhancing your viewing experience. The ...
Seestar S50 smart telescope from ZWO
Sunday, April 21, 2024 by Richard Harris
Introducing the Seestar S50, a revolutionary compact all-in-one smart telescope that combines multiple astronomical tools into a lightweight, 2.5kg package. This device integrates a telescope, electrical focuser, astronomical camera, ASIAIR, altazimuth mount, dew heater, and filter wheel, redefining convenience in astronomical observation. Seestar S50 smart telescope...
AT115EDT scope from Astro Tech
Sunday, April 21, 2024 by Richard Harris
The Astro-Tech AT115EDT telescope is designed with a 115mm aperture and 805mm focal length, featuring ED (Extra-low Dispersion) apochromatic triplet refractor optics. This configuration minimizes color fringing and halos for clear, sharp images. The optics are slow-polished for reduced light scatter and are fully multicoated to enhance light transmission and contrast, e...
TEC Yellow Submarine updates
Thursday, December 14, 2023 by Richard Harris
The newly released update to the classic TEC APO160FL “Yellow Submarine” offers a refractor telescope with 160 mm free aperture and 1760 mm focal length. This updated f/11 version introduces key design changes to optimize color correction offering an apochromatic doublet lens with a fluorite (CaF2) inner element that comes up to temperature faster than the p...
Takahashi TSA-120 Refractor Telescope
Wednesday, July 15, 2009 by Richard Harris
Takahashi, renowned for its high-quality telescopes, introduces the TSA-120, a distinguished member of its triplet refractor series. Known for delivering exceptional optical clarity, the TSA series is designed to meet the needs of both visual observers and astrophotographers. The TSA-120 stands out with its innovative optical design, incorporating ED glass positioned be...
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