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loron91423

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About loron91423

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  1. Hmmm Any prices listed at loron91423.tripod? Hmmmm :hello1:
  2. Welcome! Have lots of fun
  3. ALBERTO MONTALVO He knew it all the time! "IT'S THE PLANETONIAN" Guess who? In late September 1990 turned in early reports of a large storm on Saturn? To find out read Sky&Telescope December 1990 page 591 and February 1991 page 144 :hello1:
  4. Thank you for your comments on our thread. As to the f/number the visual brightness of an object depends on the telescope's aperture not f/ratio. In photography it is a much different matter then in astronomy. If one has a well made optical system in their reflector, the investment into a 3 vane system is well worth it.
  5. Chester Brandon having been a designer as to the NORDEN bombsight in WWII developed a series of oculars that have become most popular with astronomers because of their fine quality derived from their optical design. They are in focal lengths of 32mm, 24mm, 18mm, 12mm, and 8mm. Yes they are exspensive but well worth the investment for your planetary telescope system. Many well known astronomers references to their experience using the eyepieces which are sold through Vernonscope&CO. The contrast for the moon & Saturn is excellent. With Brandons, there is a dark background surrounding the a bright object which is perfect for planetary and double-star observing. From my observing I have found them excellent in observing lunar details such as the bands of Aristarchus showing much better detail. All of this fine imaging is due to their special design along with the 7-layer multicoating. Most astronomers who own a large aperture refractor have in their collection a set of Brandons. So if you looking for a minor division in Saturn's rings or a faint arm of a spiral galaxy, the Brandons are the eyepieces to get. One can purchase them as a set or the eyepieces individually. *(Previous Post entitled "BRANDONS 32mm, 24mm, 18mm, 12mm, 8mm" is pending confirmation of submitted material. Astronomers, Telescope Builders, and Telescope Manufacturers by L. Knowlen 1999 ISBN: 44-777-9311-01)
  6. Astronomer Alberto Montalvo taught me that there is such a thing. Several very important elements are required before a reflector can be considered for the study of the moon, planets, and the sun. (Remember however that no reflecting telescope will yield as good an image for lunar and planetary work as a refracting telescope does because of the optical design not because of certain design type or manufacturer or craftsman.) Refractors and reflectors are different telescopes because they are designed to do different tasks but a reflector can be made to perform well for lunar and planetary study. The first is the main element of a reflecting telescope for planetary work is the quality of the optics. (primary and secondary mirrors) and the optical design system it's self with respect to with respect to the aperture and f/ratio. The second main element to be employed within the system is that of a three vane curved spider to support the secondary mirror or diagonal. The vanes do not reduce diffraction spikes completely but make it much less noticeable by flushing the light to the inside walls of the telescope's tube assembly. I saw examples of this system when viewing through the reflecting telescopes of astronomer Alberto Montalvo. He assembled a collection of reflectors that are some of the finest optical systems for use in lunar and planetary study. You may Google him to locate more information of him and the telescope designs that he used for his study of the moon and planets.
  7. Welcome to Stargazers. You'll enjoy it here.
  8. Hello from California. You will like it here at Stargazers.
  9. Welcome to Stargazers. We sure enjoy this community
  10. Welcome to Stargazers. We enjoy it very much an hope you do as well.
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