Optical physicist Dr. Don Bruns recently updated Tele Vue on his preparation for measuring star deflections near the sun during August’s total solar eclipse. As explained on our March 21st blog post (“Tele Vue NP101is to Test Einstein’s General Relativity”), when first measured at the 1919 total solar eclipse, the deflections confirmed Einstein’s general theory of relativity (and made Einstein a household name). Over the years though, the accuracy of the 1919 experiment has been called into question and subsequent visual light attempts during eclipses has not been “stellar”. According to Dr. Bruns, “astronomers last repeated the experiment in 1973, achieving an error of 11%”. This time around he hopes to achieve an accuracy of 1% using readily available amateur equipment. Instead of hauling a big 16” diameter refractor to the eclipse site – as in the 1919 experiment – he’ll be using a much more compact Tele Vue NP-101is telescope. Continue reading “Tele Vue TV-NP101is Relativity Experiment Update”
At last year’s Golden State Star Party, Anthony DLC created this image of the Lagoon Nebula (M8 left) and Trifid Nebula (M20 right) through aTele Vue TV-NP101is and modified DSLR camera. He used 20 x 7-minute exposures.
Continue reading “Golden State Star Party: June 21 – 25”
Saturn will be visible all night in the sky on the 15th as it rises when the sun sets (hence it is opposite the sun). Now is a good time to revisit an essay I wrote a while back about this visually appealing planet.
I’ve found that first-time views of Saturn through a telescope typically elicit gasps of delight followed by inquisitive questioning.
Saturn’s startling beauty can open the door to wonders and knowledge about the universe that can inspire a love and appreciation of all the arts, sciences, and history.
Understanding something of the vastness and nature of the universe and our unique position as the only species possessing such knowledge suggests we commit to fostering the best in us: love, kindness, respect for learning and for all the amazing life-forms we’re so fortunate to share on this wonderful planet.
So let’s use Saturn as a means to enrich our future and help preserve our earthly paradise.
Spread the word to change Saturday to Saturnday through all media and contacts, in every social venue, to start dialogues that can open the minds and hearts of our earthling friends. Caring for our precious planet and it’s lucky inhabitants, will make future generations proud of our time here.
Saturnday can change the world with your help !
– Al (10715) Nagler
The “supermoon” — a full moon that occurs when the moon is nearest the earth — seems to garner a lot of media attention. Very little scrutiny is paid to the occurrences of “micromoon” — an appellation bestowed when the full moon occurs at the furthest reaches of its orbit. Just Google “supermoon” and you’ll get 10-million results vs. a paltry 45,000 for “micromoon”. But the micromoon offers an interesting contrast to the supermoon. Continue reading “June 9th: Night of the “Micromoon””
From his backyard observatory in Bountiful, Utah, in the western foothills of the Wasatch Mountains, Jay Butler images the heavens with his 10″ f/4 fast Newtonian – equipped with a Tele Vue BIG Paracorr Type-2. Despite the poor seeing – from suburban light pollution and strong updrafts from the valley floor – he’s been able to score a medley of celestial clusters, galaxies, and nebulae that cross his sky. Continue reading “BIG Paracorr User Profile:
My high school years were spent scheming and cutting classes to spend every opportunity to work on my shop project. No tie racks for me. A 200 lb. 8 inch Newtonian with a wooden hexagonal tube and pipe-fitting equatorial mount was MY dream project. Continue reading “Excerpts: Al’s Sidewalk Astronomy Adventures”
Employing Tele Vue’s 2-inch Paracorr Type-2 photo/visual accessory, Oleg Bryzgalov in Ukraine has been doing outstanding astrophotography with fast 10” Newtonians. His work spans the deep space gamut: star clusters, emission nebulae, and galaxies. Some of the well-over 100 Paracorr images he’s posted on flickr.com are featured in our Tele Vue Paracorr Gallery. Continue reading “2” Paracorr Type-2 User Profile:
Judi and I were honored to fill in for a guest speaker unable to attend the Southern Star Astronomy Convention. It was a long but interesting drive to Wildacres Retreat, a magnificent resort used by the Charlotte Amateur Astronomers Club for 30-years. Located near the Blue Ridge Parkway and the town of Little Switzerland in North Carolina, we met a great entourage of fellow enthusiasts over a short stay to give two talks: the opening conferences talk on Thursday evening, April 27, and a talk the next morning. Continue reading “Al Nagler Attends SSAC 2017”
Perusing through all the #televue images on flicker, you’ll find the usual images of planets, the jagged lunar surface, pinwheel galaxies, and diaphanous nebulae suspended against the backdrop of the void. But nestled among these are images of birds. Birds of diverse species in various poses: suspended in mid-air with wings high and legs outstretched for landing, casually hanging below a branch and peering into the camera, or displaying their plumage on the ground. Yes, our telescopes don’t just come out at night — our smaller scopes have “day jobs” as birding scopes. Continue reading “Tele Vue is for the Birds”
NEAF has always been a great show for us. It’s a wonderful chance for people to get their hands on our equipment and really see and feel the care and quality we put into our products. While five of us were constantly busy showing scopes, making eyepiece recommendations, and enjoying talking amateur astronomy, no one was busier than my father. He was giving show-goers a glimpse of what our eyepieces, adapted to night vision, could do. Continue reading “About the NEAF Night Vision Demonstration”