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Saturday, 23 November 2024

Astronomy Calendar of Celestial Events for Calendar Year 2025

Astronomy Calendar of Celestial Events for Calendar Year 2025

January 2025

January 3, 4 - Quadrantids Meteor Shower. The Quadrantids is an above average shower, with up to 40 meteors per hour at its peak. It is thought to be produced by dust grains left behind by an extinct comet known as 2003 EH1, which was discovered in 2003. The shower runs annually from January 1-5. It peaks this year on the night of the 3rd and morning of the 4th. The crescent moon will set early in the evening, leaving dark skies for what should be an excellent show. Best viewing will be from a dark location after midnight. Meteors will radiate from the constellation Bootes, but can appear anywhere in the sky.

January 10 - Venus at Greatest Eastern Elongation. The planet Venus reaches greatest eastern elongation of 47.2 degrees from the Sun. This is the best time to view Venus since it will be at its highest point above the horizon in the evening sky. Look for the bright planet in the western sky after sunset.

January 13 - Full Moon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 22:28 UTC. This full moon was known by early Native American tribes as the Wolf Moon because this was the time of year when hungry wolf packs howled outside their camps. This moon has also been know as the Old Moon and the Moon After Yule.

January 16 - Mars at Opposition. The red planet will be at its closest approach to Earth and its face will be fully illuminated by the Sun. It will be brighter than any other time of the year and will be visible all night long. This is the best time to view and photograph Mars. A medium-sized telescope will allow you to see some of the dark details on the planet's orange surface.

January 29 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 12:37 UTC. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.

February 2025

February 12 - Full Moon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 13:55 UTC. This full moon was known by early Native American tribes as the Snow Moon because the heaviest snows usually fell during this time of the year. Since hunting is difficult, this moon has also been known by some tribes as the Hunger Moon, since the harsh weather made hunting difficult.

February 28 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 00:46 UTC. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.

March 2025

March 8 - Mercury at Greatest Eastern Elongation. The planet Mercury reaches greatest eastern elongation of 18.2 degrees from the Sun. This is the best time to view Mercury since it will be at its highest point above the horizon in the evening sky. Look for the planet low in the western sky just after sunset.

March 14 - Full Moon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 06:56 UTC. This full moon was known by early Native American tribes as the Worm Moon because this was the time of year when the ground would begin to soften and the earthworms would reappear. This moon has also been known as the Crow Moon, the Crust Moon, the Sap Moon, and the Lenten Moon.

March 14 - Total Lunar Eclipse. A total lunar eclipse occurs when the Moon passes completely through the Earth's dark shadow, or umbra. During this type of eclipse, the Moon will gradually get darker and then take on a rusty or blood red color. The eclipse will be visible throughout all of North America, Mexico, Central America, and South America.

March 20 - March Equinox. The March equinox occurs at 08:58 UTC. The Sun will shine directly on the equator and there will be nearly equal amounts of day and night throughout the world. This is also the first day of spring (vernal equinox) in the Northern Hemisphere and the first day of fall (autumnal equinox) in the Southern Hemisphere.

March 29 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 11:00 UTC. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.

March 29 - Partial Solar Eclipse. A partial solar eclipse occurs when the Moon covers only a part of the Sun, sometimes resembling a bite taken out of a cookie. A partial solar eclipse can only be safely observed with a special solar filter or by looking at the Sun's reflection. This partial eclipse will be visible throughout Greenland and most of northern Europe and northern Russia. It will be best seen from Canada with 93% coverage.


Source: seasky.org/astronomy/astronomy-calendar-2025.html science.nasa.gov/multimedia/2025-nasa-science-planning-guide/

Tuesday, 19 November 2024

First time telescope buyer's guide

First time telescope buyer's guide

A question often asked on beginner forums or on reddit astronomy boards is, "What telescope should I get?" or "What is the best beginner telescope?" There's a helpful - if older - article from 2010 by Sky and Telescope that covers some (at the time) sub-$100 telescopes, all of which are more than that now by $10 to $30. That's a good place to start. But sometimes the budget is more (or less!). So what to do from there? There are SO many choice today, it's hard to know what to get. Here are some recommendations I think may help. First, watch these Telescope Basics videos. Even if the telescope is not for you, it will help you understand the types of telescopes and accessories, and what a user may be able to see more easily with one. It will only take half an hour or so. It's well worth the time to choose the best telescope. Second - and this is a recommendation hear a lot - consider binoculars. Or at minimum, leave some budget for a low-cost pair from Amazon (Celestron Cometron 7x50's price in 2020 when I updated this is around $37). I know, I know - astronomy screams "TELESCOPE!" and not binoculars, which seems to offhandedly remark, "Birding? Mountain-viewing? Neighbor-watching?" But if the gift is for YOU, and you want to learn the sky better, they really are helpful supplemental set of optics - they assist in familiarizing oneself with the night sky, finding objects up there, starhopping, and besides that, seasoned amateur astronomers ALWAYS use binoculars. They won't go unused, even after you get a telescope. But I know that's not the first thing on most people's minds. So... where to start if it absolutely must be a telescope - or if binoculars have already been purchased? Let's start with the low-end of the budget. Under $100 telescopes Consider some of the tabletop 76mm reflector Dobsonian type telescopes, such as offered by Celestron, Orion and some other brands. These are so much better than the 50mm refractors of yesteryear. They are solid, stable and provide far more light gathering than 50mm or 60mm refractors - that are often on wobbly tripods. One accessory you most likely MUST add? A barlow lens. The focal length on these is not long - usually around 300mm. That doesn't allow for a lot of magnification even with a 10mm eyepiece (just 30x). So a 3x barlow will get you up to 90x. That's suitable for planets, the Moon and double stars. $100 to $200 telescopes The Sky and Telescope article reviewed telescopes that fall into this category, but there are a couple more I think are worth considering in this price rance. One is the Orion Starblast 4.5, which is an adequately-sized aperture instrument that will gather decent light and show some good objects in the sky. The included eyepieces will net 26x and 75x, so low power and "useful enough for planets" medium magnification is at least included with the telescope. A 2x barlow wouldn't hurt, if there is another $40 or $50 available in the budget though. And functionally, this telescope is similar to the Funscope/Firstscope listed above, just a "bigger brother" version of it - a nice sturdy mount, wide field views, and adequate accessories included. Drawbacks include the short focal length, very fast focal length which will produce coma (this only affects the view near the edge of the field of view), and the three-element eyepieces included. But for the price, it is a very good value in my opinion. Note: I own an Orion Starblast 4.5, and it offers very good, wide-field views of many deep sky objects, and quite clearly in the center of the field. Overall, a good option. And consider building this simple-to-make, $40 tripod to help you with viewing. Since I wrote this article back in 2012, there are several other manufacturers that have similar telescopes. Do consider other manufacturers if you cannot find the Orion one. These are often made by the same Asian telescope manufacturers. On the flip side of that "fast focal length / coma aberration" coin is the Orion Starmax 90 Maksutov Cassegrain telescope. With a much longer focal length and a Mak-Cass design, the aberrations are practically non-existent, and the folded-optical path means a long focal length for higher-magnification viewing. Included eyepieces place the included magnifications at 50x and 125x - useful low-ish power, and a quite-usable higher magnification that is close to most night's limit on magnification of 150x anyway (regardless of telescope, due to atmospheric unsteadiness). Drawbacks are narrower field of view, which can make it harder to locate objects, a smaller aperture than the 4.5 scope, and a star diagonal that can be in an uncomfortably impossible position to view when the scope is pointed overhead at the zenith. And from the looks of it, the diagonal may hit the based before it can even be pointed overhead. But - zenith viewing can be difficult in some scopes anyway, and the recourse to this is... wait an hour or two for the object to rotate to a better position. It's a worthwhile option to consider. $200 to $300 telescopes I have no personal experience with this next telescope, but I have used the mount it comes on. The Celestron Astromaster 90 EQ Refractor appears to be a decent options. It's the first one I've mentioned that has that classic telescope "look": Long tube with the eyepiece at the end. That's partly why this is a qualified recommendation: The tube and scope, while of a focal length that will likely reduce chromatic aberration, is also long enough that it may cause that tripod to be unstable. Now, I have an Orion 90mm refractor the same length that I use on a Celestron mount that is exactly the same - BUT - I built my own tripod. My wood tripod is rock solid; I'm not so sure about the legs on that one. But a 90mm scope can show you a fair amount; I've seen the Crab Nebula (Messier 1) with my Orion (though barely), under my 4.5 magnitude skies. For about $20 more is the Orion version on their own mount (I built mine from various pieces). The Orion Astroview 90mm Equatorial Refractor is a telescope tube I own. The optics are certainly acceptable for an achromatic refractor of this focal length, nicely coated and exhibit only minor chromatic aberration. The focal length, surprisingly, provides not only nice high magnification views, but even decent wide field ones with a 32mm eyepiece. I do have a concern about the Orion tripod, as honestly, it looks a little flimsier than the Celestron - the Orion aluminum ones can be rather shaky and unstable. Note in the picture how the legs are not extened; that is probably the best way to use that, though it also means laying on the ground to view objects overhead - not ideal. One could fill the tripod legs with sand or put a 5 or 8 pound weight on the accessory tray to minimize vibrations, but in either the Celestron 90 or Orion 90's future, a wood new tripod would be the next best accessory to buy. $300 - $400 telescopes At this point, there really is one good option to recommend: An 6" Dobsonian reflector. A large aperture, solid mount, and great all-around performer, it is truly one of the "best bang for the buck" telescopes out there. These are largely made by the same couploe of Asian manufacturers, as with the telescopes listed above. So the optics are generally more than adequate, the differences tend to be in the accessories provides, such as finderscope, focuser and eyepiece(s). They all weigh about the same, and generally cost is in the same neighborhood from each other. For a little more, in the $450 to $550 range, this is where the "Get an 8" Dobsonian for a first telescope" comes into play. From my readings, either the Orion XT8, Zhumell Z8 Deluxe or Apertura AD8 are all worthy options. None are "premium" telescopes, but that are certainly perfectly adequate performers that can provide literally a lifetime of views, and for under $600, that's a pretty great deal if you ask me. Of course, collimation will really be required of these instruments, but that is a skill that can be learned. And Dobsonians, moreso than most other telescopes, are perfect contenders for adding upgrades and improvements. But these can be added over time. Out of the box, they are a great option, able to show both planetary and deep sky views that are of very good performance. If you can make this budget option, it's worth the investment. What I did NOT include - and why You'll notice I have not included any computer telescopes or very short refractors or a single Schmidt Cassegrain telescope. That is not because any of those options are bad, necessarily. But I do not believe that for the price points I have covered, that any of the options available are worth buying in the prices I have covered - anything worth getting costs more. (And if you DO have more to spend, by all means, consider some of the good options in the higher price ranges.) Others may argue that point about what to include in the prices I covered, and are welcome to that opinion. I just think the above options are some of the best options for beginners getting started, without having to worry about learning difficult to navigate computer modules with batteries that can run out or motors than can die, or telecopes that have aberrations that can really ruin the first-time user experience. Think about it: If your batteries die, or the computer breaks, or a motor malfunctions, what can you do with that telescopes? But if it is a manual telescope, you can ALWAYS use it - no batteries or technology needed other than a star map. Many of those other computerized / fancier / short refractor scopes may make great second options; but strongly consider the ones I have listed above as first-time instruments. And avoid the 60mm and 70mm refractors, if at all possible. I have several, and they can be fun to use... on the Moon, and a few (VERY few) bright targets. After that, they wind up collecting dust. Consider the options above, if the scope is to see substantial use beyond the excitement of the first few nights, and the budget is around $500 or less. Got questions? Email me! I appreciate the feedback, and may have even overlooked a good option. And also, I have absolutely no financial relationship with any of the companies I mentioned above, so I don't make any money from any of them, not matter from whom you buy. Writer : David Fuller is a long time amateur astronomer and builder of telescopes and observing items. His Eyes on the Sky YouTube channel has been helping people find "What's up?" in the night sky as well as understand how to use telescope and binoculars since 2010. He advocates for darker nights to not only see more in the cosmos, but for everyone to get better sleep and improve the nighttime environment overall. eyesonthesky com/articles/first-time-telescope-buyers-guide/

Thursday, 20 April 2023

Popular Science by Celestron StarSense Explorer 100AZ

Popular Science by Celestron StarSense Explorer 100AZ

Celestron has reinvented the manual telescope with StarSense Explorer—the first telescope that uses your smartphone to analyze the night sky and calculate its position in real-time. This special edition Popular Science by Celestron StarSense Explorer is ideal for beginners thanks to the app’s user-friendly interface and detailed tutorials. It’s like having your own personal tour guide of the night sky.



This video introduces the Celestron StarSense Explorer 100AZ telescope, which uses a smartphone app to guide users to celestial objects. The app aligns with the telescope and uses sky recognition technology to pinpoint its location, generating a list of visible objects. Users can then follow on-screen arrows to view their chosen object.

 

১০০ বছর পর ২০এপ্রিল ২০২৩ তারিখ বৃহস্পতিবার বিরলতম সূর্য গ্রহণ

১০০ বছর পর ২০এপ্রিল ২০২৩ তারিখ বৃহস্পতিবার বিরলতম সূর্য গ্রহণ

 









১০০ বছর পর ২০এপ্রিল বিরলতম সূর্য গ্রহণ ২০ শে এপ্রিল বৃহস্পতিবার সংঘটিত হতে যাচ্ছে এই বিরল সূর্যগ্রহণ । এই সূর্যগ্রহণ টি হবে পুর্নগ্রাস সূর্যগ্রহণ,অর্থ্যাৎ সূর্যগ্রহণ চলাকালীন সময়ে চাঁদ সূর্যকে পুরোপুরি ঢেকে নিবে। একই সময়ে তিন ধরনের গ্রহণ দেখা যাবে বলে একে শংকর সূর্যগ্রহণ বলা হয়। ১০০ বছর পর বিরলতম সূর্যগ্রহণটি আবার ঘটতে চলেছে।

এই সূর্যগ্রহণ কে হাইব্রিড বা শংকর সূর্যগ্রহণ বলে অ্যাখ্যায়িত করেছেন। কারণ এদিন একই সঙ্গে তিন ধরনের গ্রহণ দেখা যাবে। এই সূর্যগ্রহণকে Ningalu Solar Eclipse-ও বলা হয়ে থাকে।আসুন জেনে নিই, শংকর সূর্যগ্রহণ কী?

যখন তিন ধরনের সূর্যগ্রহণ- আংশিক গ্রহন,পূর্ণগ্রাস এবং বলয়গ্রাস গ্রহণ দেখা যায়, তখন তাকে শঙ্কর গ্রহণ বলে। এই ধরনের গ্রহণ অত্যন্ত বিরল। শঙ্কর সূর্যগ্রহণ ১০০ বছরে একবার দেখা যাবে। এই তিন ধরনের গ্রহণ হলো…

আংশিক সূর্যগ্রহণ

আংশিক সূর্যগ্রহণ, যখন চাঁদ এমনভাবে সূর্যের সামনে দিয়ে যায় যাতে সূর্যের কিছু অংশ চাঁদের ছায়ায় ঢেকে যায় তখন তাকে আংশিক সূর্যগ্রহণ বলে।

বলয়গ্রাস সূর্যগ্রহণ

যবলয়গ্রাস সূর্যগ্রহণ, খন চাঁদ এমন দূরত্বে চলে যায় যে এটি সূর্যের ঠিক মাঝখানে থাকে, তখন চাঁদের ছায়া সূর্যের উপর এমনভাবে পড়ে যে সূর্যকে পৃথিবী থেকে আগুনের বলয়ের মতো দেখায়, একে বৃত্তাকার গ্রহণ বলে।

পূর্ণগ্রাস সূর্যগ্রহণ

পূর্ণগ্রাস সূর্যগ্রহণ, সূর্য এবং চাঁদ যখন সম্পূর্ণ সরলরেখায় থাকে, তখন সূর্য পৃথিবীর কিছু অংশে সম্পূর্ণরূপে আবৃত থাকে। পৃথিবীর এই সমস্ত অঞ্চলে দিনের বেলায় রাতের মতো অন্ধকার হয় । একে পূর্ণ সূর্যগ্রহণ বলা হয়।

সূর্যগ্রহণের সময়

সূর্যগ্রহণের সময়, আগামী ২০ এপ্রিল ২০২৩ বৃহস্পতিবার হবে এই বছরের প্রথম সূর্যগ্রহণ। সূর্যগ্রহণ ২০২৩। ১০০ বছর পর ২০এপ্রিল বিরলতম সূর্য গ্রহণ, বাংলাদেশ সময় অনুসারে সকাল ৭টা ৩৪ মিনিটে গ্রহণ লাগবে এবং গ্রহণ ছেড়ে যাবে বেলা ১২টা ৫৯ মিনিটে। মোট ৫ ঘণ্টা ২৪ মিনিট ধরে চলবে সূর্যগ্রহণ।

সূর্যগ্রহণের সময় সূর্যগ্রহণ টি বাংলাদেশ সময় সকাল ৭ টা বেজে ৩৪ মিনিটে শুরু হবে।
বাংলাদেশ সময় সকাল ৮ টা বেজে ৩৭ মিনিটে পূর্ণগ্রাস গ্রহন শুরু হবে।
পূর্ণগ্রাস গ্রহণ শুরু হবে বাংলাদেশ সময় সকাল ১০ টা বেজে ১৬ মিনিটে এবং শেষ হবে দুপুর ১১ টা বেজে ৫৬ মিনিটে।
পুরোপুরি শেষ হবে বাংলাদেশ সময় দুপুর ১২ টা বেজে ৫৯ মিনিটে।

২০২৩ সালে মহাকাশ নিয়ে কৌতূহল

২০২৩ সালে মহাকাশ নিয়ে কৌতূহল লোকদের জন্য দুর্দান্ত চমক রয়েছে। মহাজাগতিক ঘটনা যেমন উল্কাপাত, চন্দ্রগ্রহণ এবং সুপার মুন সারা বছর জুড়ে ঘটবে। প্রায় প্রতি বছর ১২টি পূর্ণিমা হয়। তবে এবার দেখা যাবে ১৩টি। এর মধ্যে দুটি হবে আগস্টে। দ্বিতীয় পূর্ণিমা একটি নীল চাঁদ হবে।

গড়ে প্রতি আড়াই বছরে একটি নীল চাঁদ দেখা যায়। ২০২৩ সালে মহাকাশ নিয়ে কৌতূহল, স্পেস অবজারভেটরি আর্থস্কাই আগস্টের পূর্ণিমাকে সুপারমুন বলে অভিহিত করেছে। তবে সুপারমুনের সংজ্ঞা ভিন্ন। পূর্ণিমায়, চাঁদ যখন উজ্জ্বল এবং পৃথিবীর কাছাকাছি থাকে, তখন এটি একটি সুপারমুন। সেই হিসাবে, জুলাইয়ের চাঁদকে সুপারমুন হিসাবেও বিবেচনা করা যেতে পারে।

ইতিমধ্যে, পৃথিবী ২০২৩ সালে দুটি সূর্যগ্রহণ এবং দুটি চন্দ্রগ্রহণের সাক্ষী হবে৷ ২০২৩ সালে মহাকাশ নিয়ে কৌতূহল, ২০এপ্রিল একটি সূর্যগ্রহণ ঘটবে এবং অপরটি পশ্চিম গোলার্ধে সূর্যগ্রহণ ১৪ অক্টোবর হবে। এই ঘটনাটি উত্তর, মধ্য এবং দক্ষিণ আমেরিকা থেকে দেখা যাবে। অন্যদিকে চন্দ্রগ্রহণ হবে ৫ মে এবং ২৮ অক্টোবর। প্রথমটি আফ্রিকা, এশিয়া ও অস্ট্রেলিয়া থেকে দেখা যাবে। দ্বিতীয়টি ইউরোপ, এশিয়া এবং আমেরিকার কিছু অংশে দেখা যায়।

২০২৩ সালে মোট বারোটি উল্কাবৃষ্টি হবে। প্রথম পর্বটি ৩ এবং ৪ জানুয়ারী অনুষ্ঠিত হয়েছিল। দ্বিতীয়টি এপ্রিল মাসে। এরপর পরপর জুলাইয়ে দুটি, আগস্টে একটি, অক্টোবরে একটি এবং নভেম্বরে দুটি উল্কাপাত হবে। কিন্তু এসব অপরূপ দৃশ্য দেখতে হলে আপনাকে শহুরে আলোক দূষণমুক্ত জায়গায় দাঁড়াতে হবে। সূর্যগ্রহণ ২০২৩। ১০০ বছর পর ২০এপ্রিল বিরলতম সূর্য গ্রহণ, একটি প্রশস্ত মাঠ বা খোলা জায়গায় যান এবং সোজা উপরে দেখুন। চোখের অন্ধকারের সাথে খাপ খাইয়ে নেওয়ার জন্য ২০-৩০ মিনিট। কোন ফোন ছাড়া থাকতে হবে,তারপর আছে চমক।

বছরের প্রথম সূর্যগ্রহণ ২০ এপ্রিল

বছরের প্রথম সূর্যগ্রহণ ২০ এপ্রিল ১৫০ বছরের মধ্যে দীর্ঘতম সূর্যগ্রহণ, যার অর্থ হল সূর্যগ্রহণ যে স্থানে ঘটবে সেখানে কিছু সময়ের জন্য সূর্য এবং চাঁদের ছায়া থাকবে। তবে বাংলাদেশ ও ভারত থেকে এই গ্রহন দেখা যাবে না। সূর্যগ্রহণ ২০২৩। ১০০ বছর পর ২০এপ্রিল বিরলতম সূর্য গ্রহণ, এই সূর্যগ্রহণ কম্বোডিয়া, চীন, আমেরিকা, মাইক্রোনেশিয়া, মালয়েশিয়া, ফিজি, জাপান, সামোয়া, সলোমন দ্বীপপুঞ্জ, ব্রুনাই, সিঙ্গাপুর, থাইল্যান্ড, অ্যান্টার্কটিকা, অস্ট্রেলিয়া, নিউজিল্যান্ড, ভিয়েতনাম, তাইওয়ান, পাপুয়া নিউ গিনি, ইন্দোনেশিয়া, ফিলিপাইন, দক্ষিণ ভারত মহাসাগর অন্তর্ভুক্ত করে অঞ্চল, দক্ষিণ প্রশান্ত মহাসাগরের বিস্তৃত এলাকা থেকে দেখা যাবে।

বাংলাদেশে সূর্যগ্রহণ

বাংলাদেশ সূর্যগ্রহণ, বাংলাদেশ থেকে যেহেতু গ্রহণ টি দেখা যাবে না, তাই বাংলাদেশের মানুষের এ নিয়ে ভাবার কোনো কারণ নেই । সূর্যগ্রহণ ২০২৩। ১০০ বছর পর ২০এপ্রিল বিরলতম সূর্য গ্রহণ। ২০৩০ সালে বাংলাদেশ থেকে একটি আংশিক সূর্যগ্রহণ দৃশ্যমান হবে। তবে,এই শতাব্দীতে বাংলাদেশ থেকে কোনো পুরোপুরি সূর্যগ্রহণ দেখা যাবে না,শুধুমাত্র আংশিক দেখা যাবে।

 

আর ধর্মীয় বিষয়গুলো মাথায় রাখলে এ সময় বেশি বেশি নফল নামাজ পড়বেন। কোনো কুসংস্কারে কান দেবেন না।

 

 

Wednesday, 21 December 2022

Popular Science by Celestron StarSense Explorer 5" Schmidt Cassegrain

Popular Science by Celestron StarSense Explorer 5" Schmidt Cassegrain

 

Celestron has reinvented the manual telescope with StarSense Explorer—the first telescope that uses your smartphone to analyze the night sky and calculate its position in real time. This special edition Popular Science by Celestron StarSense Explorer is ideal for beginners thanks to the app’s user-friendly interface and detailed tutorials. It’s like having your own personal tour guide of the night sky.


 

This video introduces the Celestron StarSense Explorer DX 5-inch SCT telescope, which uses a smartphone app to help users navigate the night sky. The app aligns with the telescope and uses sky recognition technology to pinpoint its exact position, then generates a list of visible celestial objects. Users can select an object and follow on-screen arrows to view it through the eyepiece.

Tuesday, 20 December 2022