Peg It Board

  • Stephen Hawking

    Stephen Hawking: No Need for God Jim Carrey and Stephen Hawking on Late Night With Conan O'B Stephen Hawking's Universe   EP4: On The Dark Side (4/ 5) O Universo de Stephen Hawking   legendado pt br (parte01) Anime Expo 2011: Suggestions for the SPJA   [ProTips Series | Part 2] Review: PROMETHEUS Stephen Hawking: Large Hadron Collider vital for h   David Ickeu0027s Benedict Cumberbatch as Stephen Hawking   Only human (but still a genius!) Quin cre el universo? Stephen Hawking Stephen Hawking

    547 Pegs in this board

    Originally Pegged by

    Why I'm Against Pres. Obama   He Has Outspent The Past 5 Pres. Before Him The One Percent Exercise your way into skinny jeans Do It Yourself Spray Foam Insulation, Do It Yourself Spray Foam How to Make a Custom Dry Erase Board or White Board for under $35 Otterbox iPhone 4s Commuter Case   Blue/White Apple iPhone Tele Vue is known for its in house eyepiece and telescope designs by Al Nagler; our latest eyepiece brings new meaning to the term in house. The concept for this eyepiece was first proposed by Tele Vue President David Nagler with performance parameters giving it the fundamental characteristics (the ethos) of a Tele Vue eyepiece: high contrast comfortable eye relief and full field sharpness. Control of astigmatism field curvature lateral color angular magnification distortion correction and low pupil sensitivity for daytime use were specified criteria. Following Tele Vues philosophy of pushing the state of the art long time Tele Vue employee and optical design protg Paul Dellechiaie took up the challenge and designed the basic eyepiece form. Under Als guidance Paul tweaked his design to fulfill the original goals. While sharpness is inherent to the optical design contrast is maximized through the intelligent use of flat finished baffles and ultra low reflectance high efficiency coatings tuned to the composition of each element. At the 2007 Northeast Astronomy Forum Tele Vue once again broadened the amateur astronomer's perspective on the universe and introduced a new observing experience; 100 of pure Tele Vue quality. With a 13mm focal length evoking the original Nagler revolution the field area of this new eyepiece is more than 50% larger than an 82 field. The Tele Vue Ethos is essentially multiple eyepieces delivering the true field size of a longer focal length narrower apparent field eyepiece with the benefits of higher power and darker sky background.The 21mm focal length completes the logical set of 21mm/13mm/8mm and nicely juxtaposes the 17mm/10mm/6mm combination. Each step within these two sets approaches a 3x field area gain. The 21mm's effective field stop diameter is 36.2mm bringing its true field close to the 35mm Panoptic (38.7mm Field Stop diameter). Its true field is also larger than DIY : Dry Erase Board   Blush!nk Apple iPod Nano (3rd Gen) Cell Phone Rubberized Protector Case   Protect and personalize the look of your Apple iPod Nano (3rd Gen) with this attractive Hot Pink Rubberized snap on protector case. Protective Silicone Case/Cover for Apple iPod Nano 1st Generation   Protect your Apple iPod Nano with this stylish and innovative silicone case.  Made of high quality and durable silicon material All time favorites [all about Steve]


    Pegged August 3, 2012

    Member Comments

    Related Pegs: