Detailed Review on CDK 17" Planewave Astrograph (Pdf-File)
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Tele Vue's New Eyepiece Field Tested
EQUIPMENT REVIEW The Ethos offers an ultrawide field of view at high power. ⁄ ⁄ ⁄ BY STEPHEN JAMES O’MEARA Tele Vue’s new eyepiece field tested When I first heard about Tele Vue Optics’ 13mm Ethos eyepiece with its 100° apparent field of TELE VUE ETHos EYEPIECE Apparent field of view: 100° view, I didn’t realize its significance or potential. Not until Focal length: 13mm I placed the eyepiece in my 5-inch Tele Vue NP-127 f/5.2 Eye relief: 15mm Barrel size: 2" and 11⁄4" refractor did I discover that, like Alice, I had gone through Weight: 1.2 lbs. (545g) Accepts: Tele Vue DIOPTRX astigmatism the looking glass and entered a new world south. Orange Antares sat on the eastern corrector of visual wonder. And that’s what I’d like to edge of the field, while blue Sigma (σ) Scor- Price: $620 share with you: the awe and beauty of the pii shone equidistant to the northwest. Ethos experience. I found the view “as dif- All these objects stood out against a ferent as possible.” backdrop of milky starlight, scrubbed in also of NGC 6144, which was now trans- places by streaks of dim nebulosity. The formed into a distinct globe with irregular A celestial window view was worthy of an artist’s brush. starlit edges and a slightly condensed core. My observing experience began with the When I switched over to the Ethos, I The “wow” factor of observing these magnitude 5.6 globular cluster M4 in Scor- immediately became disoriented. Here was objects magnified in a wide field of view is pius. -
Tele Vue--102 Operating Guide.Pdf
Tele Vue®-102-102-102 Operating Guide 880mm f/8.6 2-ELEMENT APO REFRACTOR Thank you for purchasing the Tele Vue-102. This 4” aperture telescope has an 880mm focal length f/8.6 APO doublet diffraction-limited objective. WARNING: NEVER try to look at the sun or point the telescope toward or near the sun without professional solar observing equipment rigidly secured in front of the objective lens. When observing the sun with the proper filters, use only the Tele Vue “Sol-Searcher” (SSF-1006) for finding the Sun. Remove any other finding devices such as Starbeam from the telescope. Instant and permanent eye damage may result from viewing the sun directly, even during a solar eclipse, or when viewing through thin clouds, or when the sun is near the horizon. Standard features of the optical tube assembly (O.T.A.) include: sliding dew shield, screw-on cover, 2” focuser, and custom hard-shell case. The Complete Package also includes a 2” Everbrite diagonal, 2” to 1¼” adapter, Ring Mount, and Plössl eyepiece. Mounting - The Tele Vue Ring Mount permits mounting to the Tele Vue Gibraltar, heavy duty camera tripods or equatorial mounts using Tele Vue adapters (consult your Tele Vue dealer). You will receive the two ¼-20 studs, wing knobs, Allen wrench and complete mount assembly instructions with the mount. Finders - We particularly recommend using the Starbeam reflex sight (part# SFT-2003) to complement the 3o field of the telescope and attaches directly to the Ring Mount. The case has a cutout for the Starbeam. The Quick Release Universal Finder Bracket (QFM-1008) holds a traditional 50mm finderscope and also attaches to the mount ring channels. -
As the Dome of Twilight Sinks Below The
As the dome of twilight sinks below the horizon, a mechanical corps de ballet starts a slow-motion pirouette with each dancer keeping the unblinking eye of a telescope locked on a single spot in the heavens. Shutters open and ancient photons, ending a journey that may have started before the earth was born, collide with sensors that store an electron to mark that photon's arrival. With the dance in motion the directors sit back to watch the show; another imaging session has begun... Image by Marcus Stevens A Full and Proper Kit An introduction to the gear of astro-photography The young recruit is silly – 'e thinks o' suicide; 'E's lost his gutter-devil; 'e 'asn't got 'is pride; But day by day they kicks him, which 'elps 'im on a bit, Till 'e finds 'isself one mornin' with a full an' proper kit. Rudyard Kipling Like the young recruit in Kipling's poem 'The 'Eathen', a deep-sky imaging beginner starts with little in the way of equipment or skill. With 'older' imagers urging him onward, providing him with the benefit of the mistakes that they had made during their journey and allowing him access to the equipment they've built or collected, the newcomer gains the 'equipment' he needs, be it gear or skills, to excel at the art. At that time he has acquired a 'full and proper kit' and ceases to be a recruit. This paper is a discussion of hardware, software, methods and actions that a newcomer might find useful. It is not meant to be an in-depth discussion of all forms of astro-photography; that would take many books and more knowledge than I have available. -
Evaluating and Selecting Astronomical Eyepieces Gary J
Observing Special Interest Group Session 5 – November 18, 2020 Hello everyone! It is almost time for another TAS Observing Special Interest Group (ObSIG) meeting, which will happen at 7:00 PM on Nov. 18th. I hope that all of you are well and have found time to do a lots of observing. This month we will start with a question and answer session. Please feel free to ask any question that has been holding you back from observing or would help you understand any technical issue that would help you observe better. Whaz up? What can you see tonight and the next few weeks? By Chaz Hafey What has the group been observing lately? I really hope that we have lots of people who have lots to share. Next, our guest speaker, Gary Carter, has a special presentation on eyepieces. The talk will cover how they developed, the way they are constructed, and what they can do and cannot do in a telescope. The presentation is in a pdf form so you can follow along. Second, there is a bonus spreadsheet of all the eyepieces currently on the market at this time. After the meeting a link to tooth the Power Point and spreadsheet will be posted on our TAS/ ObSIG web page. I would advise that you look over this presentation before Wednesday, if you have time, because there is a lot of very good information to take in here and it is going to come at you pretty fast. Best Regards Lloyd Lashbrook Texas Astronomical Society of Dallas 6001 Frontier Ln. -
Delos 14 Pkg.Pdf
WARRANTY REGISTRATION FORM We sincerely thank you for your purchase and wish you years of pleasure using it! Tele Vue Warranty Summary Eyepieces, Barlows, Powermates, & Paracorr have a “Lifetime Limited” warranty, telescopes & acces- sories are warranted for 5 years. Electronic parts are warranted for 1 year. Warranty is against defects in material or workmanship. No other warranty is expressed or implied. No returns without prior authoriza- tion. Lifetime Limited Warranty details online: http://bit.ly/TVOPTLIFE 5-Year/1-Year Warranty details online: http://bit.ly/TVOPTLIMITED Keep For Your Records Dealer: ________________________________ City/State/Country: ______________________ Date (day/month/yr): ______/______/________ 14.0 Delos (EDL-14.0) Please fill out, cut out, and mail form below within ® 2-weeks of product purchase. Please include copy of sales receipt that has your name, the Tele Vue 32 Elkay Drive dealer name, and product name. Chester, NY 10918-3001 Cut out mailing address at left, tape to envelope, insert form & sales receipt in envelope and apply U.S.A. sufficient postage to envelope. 14.0 Delos (EDL-14.0) How did you learn about this product? c Dealer c Friend c Tele Vue Blog c CloudyNights.com c TeleVue.com ______________________________________ c Social Media/Magazine/Other(s): Name Last First ______________________________________ Street Address What made you decide to buy this and your com- ments after using the product? ______________________________________ City State/Province ______________________________________ Postal Country Code Email*: _________________________________ Purchase Information Phone: _________________________________ Dealer: ________________________________ Astro Club: ____________________________ City/State/Country: ______________________ *c Check to receive email blog / newsletter Date (day/month/yr): ______/______/________ DELOS EYEPIECE INSTRUCTIONS Thank you for purchasing a Tele Vue Delos eyepiece. -
A Guide to Smartphone Astrophotography National Aeronautics and Space Administration
National Aeronautics and Space Administration A Guide to Smartphone Astrophotography National Aeronautics and Space Administration A Guide to Smartphone Astrophotography A Guide to Smartphone Astrophotography Dr. Sten Odenwald NASA Space Science Education Consortium Goddard Space Flight Center Greenbelt, Maryland Cover designs and editing by Abbey Interrante Cover illustrations Front: Aurora (Elizabeth Macdonald), moon (Spencer Collins), star trails (Donald Noor), Orion nebula (Christian Harris), solar eclipse (Christopher Jones), Milky Way (Shun-Chia Yang), satellite streaks (Stanislav Kaniansky),sunspot (Michael Seeboerger-Weichselbaum),sun dogs (Billy Heather). Back: Milky Way (Gabriel Clark) Two front cover designs are provided with this book. To conserve toner, begin document printing with the second cover. This product is supported by NASA under cooperative agreement number NNH15ZDA004C. [1] Table of Contents Introduction.................................................................................................................................................... 5 How to use this book ..................................................................................................................................... 9 1.0 Light Pollution ....................................................................................................................................... 12 2.0 Cameras ................................................................................................................................................ -
Tele Vue-76 Operating Guide
Tele Vue® -76 Operating Guide 480mm f/6.3 2-ELEMENT APO REFRACTOR Thank you for purchasing the Tele Vue-76. We hope it brings great enjoyment to your observing ex- perience. The wonderfully versatile hand-built 3” aperture telescope features a diffraction limited, 480mm focal length, f/6.3 APO doublet objective which delivers razor sharp images sure to please you for years to come and wherever you observing interests lead you. WARNING: NEVER try to look at the sun or point the telescope toward or near the sun without professional solar observing equipment rigidly secured in front of the objective lens. When observing the sun with the proper filters, use only the Tele Vue “Sol-Searcher” (SSF-1006) for finding the Sun. Remove any other finding devices such as Starbeam from the telescope. Instant and permanent eye damage may result from viewing the sun directly, even during a solar eclipse, or when viewing through thin clouds, or when the sun is near the horizon. Standard features of the optical tube assembly (O.T.A.) include: sliding dew shield, screw-on cover, 2” rack and pinion focuser with 10:1 reduction, and custom padded carrying bag. Accessories TV-76 Accessory Package - includes a 2” Everbrite diagonal, 2” to 1¼” adapter, Ring Mount, Telescope Balance Adapter, and DeLite eyepiece. Mounting - The optional Tele Vue Ring Mount (available separately or in the package) permits mounting to the Tele Vue Gibraltar, Panoramic, and Tele-Pod mounts, or heavy duty camera tripods. You will receive the two ¼-20 studs, wing knobs, Allen wrench and complete mount assembly instructions with the mount. -
A Wide-Field Imager's Dream Scope
EQUIpmEnt REVIEW Tele Vue’s NP101is delivers ultra-sharp images. ⁄ ⁄ ⁄ BY JIM BURNELL A wide-field imager’s dream scope changing focus thanks to a four-point collar As CCD chips have grown in size, so built into the focuser’s drawtube. too have the demands they place on telescopes. In 2004, Tele More than a scope Vue Optics of Chester, New York, started work on a new The “is” series has a comprehensive set of design to address this demand. The Imaging System (“is”) imaging accessories. Among them is a set series provides a suitable image field for use with these chips. of camera adapters, a 0.8x focal reducer, and a single-element large-field corrector I participated in the development of the minimize vignetting (shadowing of the (needed only for the largest CCD chips). “is” series as a prototype-tester. During field that shows up as dark edges on Spacer rings go between the focal reducer evaluation, I imaged with each of the images) on a focal plane up to 2" (51.9mm) or large-field corrector and the scopes using several different CCD cam- across. Its focuser has an entrance aperture CCD chip to optimize eras. I took images of dense star fields from of 3" (76mm) and a full 2.4" (61mm) of performance. my observatory, which I scrutinized clear aperture throughout its length. intensely to assess the image quality. Mechani- cally, Tele Vue’s The “is” series new focuser Tele Vue’s “is” series consists of the TV-60is can support the (a 60mm f/6 APO doublet), the NP101is (a heaviest CCD 101mm f/5.4 four-element Nagler-Petzval), camera without the NP127is (a 127mm f/5.2 four-element flexing. -
Instruction Manual Starnavigator NG Series Telescopes with Audiostar®
Instruction Manual StarNavigator NG Series Telescopes with AudioStar® MEADE.COM WARNING! ® Never use a Meade StarNavigator NG™ Telescope to look at the Sun! Looking at or near the Sun will cause instant and irreversible damage to your eye. Eye damage is often painless, so there is no warning to the observer that damage has occurred until it is too late. Do not point the telescope at or near the Sun. Do not look through the telescope or viewfinder as it is moving. Children should always have adult supervision while observing. Refracting Telescopes use a large objective lens as their primary light-collecting element. Meade refractors, in all models and apertures, include achromatic (2-element) objective lenses in order to reduce or virtually eliminate the false color (chromatic aberration) that results in the telescopic image when light passes through a lens. Reflecting Telescopes use a concave primary mirror to collect light and form an image. In the Newtonian type of reflector, light is reflected by a small, flat secondary mirror to the side of the main tube for observation of the image. Eyepiece F 2-Element Refracting Telescope Objective Lens In the refracting telescope, light is collected by a 2-element objective lens and brought to a focus at F. Secondary Mirror Concave F Mirror Reflecting Telescope Eyepiece In contrast, the reflecting telescope uses a concave mirror for this purpose. Battery Safety Instructions CONTENTS • Always purchase the correct size (8 x 1.5V AA, 15A/15AC ANSI, LR6 IEC), (2 x ANSI/ Quick-Start Guide ........................................................... 4 NEDA-5004LC, IEC-CR2032) and grade of Refracting Telescope Features ................................... -
Planewave Image Brochure – Information on All CDK's
www.planewave.eu OFFICIAL PLANEWAVE EU-DISTRIBUTOR: G M B BAADER PLANETARIUM H Zur Sternwarte 4 • D-82291 Mammendorf • Tel. +49 (0) 8145 / 8089-0 • Fax +49 (0) 8145 / 8089-105 www.baader-planetarium.com • [email protected] • www.planewave.eu 1 www.planewave.eu Founded in 2006, PlaneWave Instruments is committed to providing observatory-class products for serious astron- omers at an unprecedented value. Developed by PlaneWave, the CDK (Corrected Dall-Kirkham) is a revolutionary telescope, its optical system was designed to excel at imaging on large format CCD cameras while remaining an excellent instrument for visual use. Created to meet the demands of both the serious imager and visual observer, the CDK is offered at an unprece- dented price/performance ratio for a telescope of this quality and aperture. One advantage of the CDK design is its ease of collimation and achievable centering tolerance for a telescope of this class. This assures that the user will get the best possible performance out of the telescope. The end result is a telescope which is free from off-axis coma, off-axis astigmatism, and curvature of field, yielding a perfectly flat field all the way out to the edge of the largest CCD sensors available today. Today PlaneWave makes a full line of CDK and Ritchey-Chrétien (RC) telescopes as well as imaging and observatory class mounts to provide complete imaging systems for both individuals and industry. TABLE OF CONTENTS The Optical Design of CDK Astrographs ............................................................................................................................ -
Tele Vue-60 Operating Guide
Qwik-Point Installation Instructions: TV60OG 1003 PRICE $5.00 Printed in U.S.A. 1) Remove the 2 but- ton head screws from the dew shield with a 1/8” Allen key. OPERATING GUIDE (You won’t be needing the screws anymore.) 2) Attach the Qwik- Tele Vue-60 Point adapter block using the socket-head cap screws and wrench supplied with the Qwik- Point (model QBT-1006). 3) Follow instructions packaged with Qwik-Point for alignment and use. Since the Qwik-Point installs on the dew shield (sometimes called Sun Shade), it can be rotated to any conve- nient angle. It stores in the Tele Vue-60 carrybag with out need to remove it. Optional equipment shown. 360mm f/6.0 APO REFRACTOR ® Tele Vue 32 Elkay Dr., Chester, New York 10918 (845) 469 - 4551 www.televue.com Visionary 16 OPERATING GUIDE 11. SPECIFICATIONS: Congratulations on purchasing the Tele Vue-60 APO telescope. We worked hard Type 2-element APO refractor to ensure that the Tele Vue-60 embodies all the performance and features of the fi nest Clear Aperture 2.4 inches (60mm) astronomical-quality telescopes along with the compact size, ease-of-use, and versatility Aperture Gain 73, compared to a 7mm eye pupil of a top spotting scope. Please take the time to read this operating guide to familiarize Focal Length 14.2 inches (360mm) yourself with the various parts, operating suggestions and care instructions that will enable Focal Ratio f/6 you to obtain maximum enjoyment from your new Tele Vue-60. Resolution 1.9 arc-sec. -
Telescope Eyepieces
Telescope Eyepieces Mike Swanson Eyepiece Basics • The main purpose of the • For example, a scope with eyepiece is to magnify the 1000mm focal length is used image produced by the with a 10mm eyepiece, objective of the telescope. resulting in a magnification • Eyepieces come in various of 100x (1000/10). focal lengths measured in • Prices range from about $20 millimeters (mm). to several hundred dollars. • The magnification provided • Good quality eyepieces are by an eyepiece is determined “multicoated”, better quality by dividing the focal length eyepieces are “fully of the telescope (also multicoated”. measured in mm) by the • Some eyepiece sets are focal length of the eyepiece. parfocal - very little refocusing required when Scope Calculator switching from one eyepiece to another. Eyepiece Basics • Eyepieces come in three • Some eyepieces are heavy sizes: .965”, 1.25” and 2”, and unbalance small scopes. which indicates the size of • The eye relief of an eyepiece the barrel that fits into the indicates the farthest focuser tube (part of the distance your eye can be scope itself). from the first lens and still • The .965 variety is only take in the entire field of available in low quality view (FOV). eyepieces and must be • With most eyepiece designs, avoided. the shorter the focal length, • The majority of eyepieces the shorter the eye relief. are 1.25”. • If you must wear glasses • The 2” models are to allow when using a scope for a wider field of view on (necessary if you have low power eyepieces. astigmatism), a long eye relief will be required. Field of View (FOV) • The amount of sky we can • Eyepieces have a see through a telescope (or characteristic known as binoculars) is measured in Apparent FOV (AFOV).