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By Bigfield
The research library of old binoculars catalogs now has 3,581 pages scanned of 207 pre 1980 binoculars catalogs, in 9 languages, covering 173 brands, and with more being added as they can be acquired. It is a section of the binoculars research website Miniature Binoculars at www.miniaturebinoculars.com, and like the website is not for profit; is free to view with no registration required; is 100% non commercial; and is intended to make more historical optical research available to more enthusiasts. The library has some catalogs that include telescopes. While the main website concentrates on a particular historical design segment of binoculars, the large catalog library covers all pre 1980 binoculars and the sections on historical binoculars distribution channels covers all binoculars, and the repair sections may have some general applicability.
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By MarsG76
This is a close up of IC 2944, also known as the Running Chicken Nebula or the λ Centauri Nebula, with the Bok Globules visible in the upper third of the frame. IC2944 is an open cluster with an associated emission nebula found in the constellation Centaurus, near the star λ Centauri. This image was exposed using a Cooled and full spectrum astro modded DSLR through a 8" SCT at it's native 2032mm (f10) focal length. The total exposure time was 8 hours and 25 minutes, through a UV/IR filter to capture natural colour data.
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By MarsG76
The view of the deep southern part of the Milkyway around the Southern Cross, Crux, and Centaurus region. This image was taken with a Canon 5D mk4 using a Canon L-series 24-105mm Lens set to f4. Image taken from a mountain, a dark(ish) location, down southern part of NSW near Kiama, called Saddleback Mountain.
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By MarsG76
NGC 6357 is a nebula about 5500 light years away in the constellation Scorpius near the better known NGC 6334, AKA the "Cat's Paw" or "Bear Paw" nebula. This nebula was also given the name War and Peace Nebula because of its appearance in infrared images, the bright western part resembles a dove and the eastern part looks like a skull. This photo was taken through a 8" SCT at f6.3 (1280mm focal length) and exposed using a full spectrum modded and cooled Canon 40D DSLR.
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By MarsG76
NGC 6357 is about 5500 light years away in the constellation Scorpius near the better known NGC 6334, AKA the "Cat's Paw" or "Bear Paw" nebula. This nebula was also given the name War and Peace Nebula because of its appearance in infrared images, the bright western part resembles a dove and the eastern part looks like a skull. This photo was taken through a Celestron C8 8" SCT at f6.3 (1280mm focal length), tracked on the CGEM and exposed using a full spectrum modded and cooled Canon 40D DSLR. Total exposure time through the SII, HAlpha and OIII filters was 40 hours.
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