![]() One of the first steps in collimating your reflector is to identify the various components as seen from the focuser. Like the primary mirror, the eyepiece has an optical axis, and this axis should be aimed at the center of the main mirror for best performance - though in practice it is the center axis of the focuser drawtube that you aim at the primary mirror. It is a complex magnifying lens used to view the image formed at the focal plane. The third optical component in the telescope system is the eyepiece. Identify the adjustment screws for the secondary holder and the spider. The secondary is attached to an adjustable holder suspended on a spider - often a cross made from thin sheet metal. You should center this fully illuminated area in the eyepiece by positioning the secondary in the correct location. To minimize harmful diffraction effects, the secondary, or diagonal, mirror is generally only large enough to let the central portion of the focal plane receive light from the whole primary mirror. This is a small, flat mirror that serves to move the image formed by the primary to the side of the tube, where it is viewed with an eyepiece. (Another approach is to use an adhesive binder reinforcement ring, the kind used by generations of school children to keep their homework from flying out of their 3-ring binders.) If you plan to use a laser collimator, make a hole in the center of your spot. As long as it is smaller than your diagonal mirror, it will not affect your telescope's performance. Don't make it too small - a ½-inch-diameter (or even slightly larger) spot works well. I recommend marking it with a piece of electrician's tape. To make collimation easy, the center of the mirror should be marked in some way. Once the rulers are correctly positioned (with the dot equidistant from the mirror's edge in all four directions), bend them down to attach the tape spot to the mirror. The dot (black electrical tape) is temporarily affixed to the underside of a pair of flexible, transparent rulers mated at right angles to one another. (For the mathematically inclinded, the sweet spot's diameter is proportional to the cube of the f/ratio.)Īccurately placing the primary mirror's center dot is an important precursor to accurate collimation. An f/10 paraboloid's sweet spot, by contrast, spans 22 mm (0.87 inch). For instance, even a perfect f/4.5 mirror, small or large, can provide "diffraction limited" performance only within a 2-millimeter (0.08-inch) circle at the focal plane. Surprisingly, the size of the "sweet spot" depends only on the main mirror's focal ratio (the mirror's focal length divided by its diameter) and not its size. ![]() In particular, this aberration can dramatically reduce the clarity of planetary detail. Coma makes stars appear asymmetric even if the telescope is perfectly focused - the farther the star is from the center of the focal plane, the worse it gets. Outside the sweet spot, an aberration known as coma visibly degrades the image. On this axis, at the focal point, is a "sweet spot" where images of stars and planets are as sharp and crisp as they can be. The important thing to know that it has an axis of symmetry - the optical axis. It has an aluminized surface that reflects starlight to form an image at the focal plane. This is the paraboloidal mirror at the bottom of the tube. Here are the components that you will be lining up: The Primary Mirror If you aren't already acquainted with the optical parts of your telescope, now is the time. ![]() Aligning and centering these components is necessary for optimal optical performance. This diagram illustrates the Newtonian reflector's optical components and some of the structures that support them. You can master it, and in only a minute or two you'll have your instrument ready for a star performance. I hope to convince you that it is none of these things. You may have heard that it is incomprehensible, tedious, time-consuming, a pain in the neck, and best avoided. The "tuning" of a telescope is known as collimation. Your Newtonian reflector will give great images of stars and planets - but only as long as you keep it well tuned. What do you do? Learn how to tune it, or trade it in for a piano? Enter the importance of learning how to align your Newtonian reflector telescope. But after a while, you notice that it has gone slightly out of tune. Suppose you have bought a fine guitar with a lovely sound and are learning to play it. However, this supposed disadvantage can be reduced to a minor task if lining up the optical elements is approached logically and methodically. One of the most frequently noted disadvantages attributed to the Newtonian reflector telescope is its need for regular collimation (also know as alignment).
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It's expensive to keep buying crystal litter. Sometimes gets stuck if someone did a big poo, which can make a mess and also then you not only have poo in the box but the rake in the middle of the box too, really rendering it useless until you fix it. Option between covered & uncovered (Side note: This was the tipping point for me to buy a second instead of a LR honestly, I have Bengals and they will be big cats, even though the usable area of the ScoopFree & LR are the same, about 14" square, I like the option of them having a little extra room on all sides and not be enclosed) Pretty quiet motor (No door between one of the boxes & my bed, and I can only barely hear it, and only if I'm already awake) On the lower end of the price range you mention I tried several different crystal brands and kept a spreadsheet of when I had to change it over the past ~4 months since I started tracking, PetSafe brand wins hands down. I like the crystal litter, great odor control, low tracking, no dust. I may experiment in the future, who knows. I wrestled with getting a LR4 instead of the second ScoopFree, but ultimately stuck with ScoopFree. ![]() I have two PetSafe ScoopFree boxes with the reusable trays. Like another poster mentioned, you’ll have to clean it every so often, especially if a cat gets diarrhea or likes to pee up the side of the inside so taking it apart and scrubbing it down is kind of a pain and takes me an hour to an hour and a half to do my best sanitizing since there are parts that I can’t really reach. Just some food for thought! I actually got mine because my boy cat is really really stinky despite a clean bill of health and changing foods a few times and I couldn’t deal with it in my one bedroom while I was working from home. You also don’t want to forget to deal with it when it’s full and that’s my issue since it doesn’t automatically notify me on my phone. ![]() If you can put it somewhere that isn’t like in a dark corner in the basement, that would also be better because sometimes it gets stuck or, if your cats are silly like mine, they’ll play with it and get it messed up every so often so you have to reset it. I’m actually more concerned about the pee since I know that male cats get blocked fairly easily so I don’t have a connect version and can’t monitor that without keeping an eye on the cats. The commenter who pointed out that you’ll miss health issues in poop is possibly right, although you can set timers on the litter robot on how long it takes before it goes off if you want to check every so often since you’ll be notified when your cat goes. I’m currently in a really condensed difficult masters program and it’s been a life saver for me. Hi there! I too have ADHD so I feel your pain! I’d say get a litter robot and maybe choose the connect one if you can. ![]() Once you’ve created your very own GIF, you can embed the file into a page or post on your site, the same way you would a regular image. This program works similarly to Snapchat, allowing you to capture short videos with your phone, add filters and stickers, then export it into GIF format. This tool also lets you combine still images to make a slideshow-style GIF.Īnother option is to make GIFs with an app such as GIPHY Cam. This could be useful if, for instance, you have a how-to video and want to include short visuals in a blog post on the same topic. There are a few methods you can use to make a GIF.įor instance, if you want to turn a snippet of a video file or YouTube video into a GIF, GIPHY offers a free GIF-creation tool, where you can capture the clip and add text, stickers, filters, or hand-drawn markups. While there are huge collections of GIFs to choose from on sites like GIPHY and Tenor, you can also make your own custom GIFs fairly easily. So, for example, you can find a GIF from a TV show that your audience would recognize. Remember: GIFs can display any type of image. That’s not to say brands targeting an older audience can’t use GIFs. Further, if your brand is hip and modern, it makes sense to include GIFs in your marketing. GIFs are most popular among younger generations such as Gen Z and millennials, so if your brand caters to this audience, there’s definitely a place for GIFs in your strategy. To figure this out, you’ll want to consider your brand and target audience. Many brands have started using GIFs for the same reasons, and you may be wondering if you should use them, too. GIFs are a key part of the larger meme culture that’s taken over social media.GIFs provide an easy way to make pop culture references.GIFs allow people to express emotions quickly and more effectively than with words alone.Should you use GIFs?Īccording to IPG Media Labs, people enjoy using GIFs for a few core reasons: This flexibility makes GIFs a useful tool for a wide range of purposes, whether you’re making a joke on social media, or illustrating a how-to post on your blog. Some GIFs are animated cartoons, while others are made from real videos or even TV shows or movies. GIFs can be made from all sorts of images. Essentially, it’s an image that’s been encoded with multiple frames, so it appears as a short “video” clip that plays on repeat. GIF stands for Graphics Interchange Format, and it’s technically a file format, like a JPG or PNG. Here’s what you need to know about these “moving images” and how to make a GIF of your own. This unique form of content is extremely popular with consumers and brands alike, and you can capitalize on the trend by making custom GIFs to use on your website. 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![]() I was impressed with the multipack discounts offered on blades by Maguire's but opted to buy 2 packs as a trial run. I'd wanted to try Silver Blues for a while. We promise to never spam you, and just use your email address to identify you as a valid customer. How do you rate this product? Write a headline for your review here: Write your review here: Your email: Click on the quantity dropdown to check the prices and make your selection. QuantitiesĪll of the blades we sell are available in 5s, 10s, 50s 100 or full 'books'. However if you feel razor drag and haven't changed your blade recently, repalce it immediately. Do not wait for the razor to drag before replacing your razor blades. (standard dimensions: 22 x 42.85mm) Grooming tipįrequent replacement of razor blades provides a closer shave and less chance of skin irritations and razor burn. Put the used razorblade into the spare protectivepaper and then dispose of in the correct manner Recommended forĪll of the Double Edge (DE) razor blades we sell will fit any DE safety razor. ![]() Simply unwrap the razorblade from its 'protective paper' and then fir into yor razorblade. They come in a cardboard pack. PACKS OF 5. The blades are of a standard format and will fit and Double Edge Safety Razor. An outstanding shaving performer, it’s incredibly sharp, durable razor edge provides optimum shaving comfort with a high level of shaver’s satisfaction achieved. Gillette Silver Blue Double Edge (DE) Razorblades are a very high quality PTFE coated blade. Gillette Silver Blue Double Edge (DE) Razor Blades Product ![]() There are boundaries placed on the roles that limit the talent of transgender people, Jamie Clayton is one of the actresses to have surpassed those boundaries. Read More: Actors Who Played Gangsters the Best 7. She is currently the part of the supernatural show, ‘The Magicians’. She has also worked in ‘Elementary’, ‘Transparent’ and ‘Grey’s Anatomy’. One of her most notable roles is that of Carmelita in ‘Dirty Sexy Money’. Keeping herself rather busy, Candis Cayne has appeared in films, TV shows and music videos. Read More: Actors Who Played Batman the Best 8. With some exciting new projects in line for her, it would be interesting to see her in her next role. ![]() Staring from small roles in movies and TV shows, her presence in the show ‘ Transparent’ was duly noted. Alexandra GreyĪnother young talent that has found her way up the ladder, Alexandra Grey proves to be a promising prospect. Read More: Best Actors Who Played the Joker 9. Besides her career on screen, Rodriguez has been an active part of Broadway and is a notable star in the theatre. MJ RodriguezĪfter working in a couple of short films and doing small roles in shows and films, MJ Rodriguez has found her big break with the leading role in Ryan Murphy’s critically acclaimed show ‘Pose’. Read More: Most Underrated Actors Working Today 10. Since Hollywood is changing speedily, it is an exciting time for Josie Totah. The career opportunities for a talented person like her are just opening up. Aside from working in shows like ‘2 Broke Girls’, ‘New Girl’, ‘Glee’ and ‘Champions’, she has also appeared in films like last year’s ‘ Spiderman: Homecoming’. Josie TotahĪt the age of just 17, Josie Totah has managed to find a strong place in the film and TV industry. Read More: Actors Who Turned Down Famous Movie Roles 11. However, not to be disappointed by a small hitch, this British actress has some serious projects lined up in the future. He gave one of the best performances of his career in this film.) Root had to settle for the role of Lili’s nurse. The unfairness of the casting in films can be considered from the fact that when Rebecca Root went to audition for the role of Lili Elbe in ‘The Danish Girl’, she was turned down in favour of Eddie Redmayne. Read More: These Actors Deserve to Win 3 Best Acting Oscars 12. The career has just begun for Hendley with several roles already added in her filmography. And this landed her a lead role in the film ‘Boy Meets Girl’. Her story caught the attention of Eric Schaeffer. ![]() She had documented her journey of transition and had been a notable person online. Michelle Hendley had started off as a YouTube personality. Read More: Most Overrated Actors Working Today 13. It’s still a long way to go and we look forward to her bright career. The biggest movie industry in the world is a very cruel place but Julia Weldon has fought her way through the different hurdles and has successfully established herself. While she still needs the ‘it’ role of her career to come along, Julia Weldon has worked in Hollywood for quite some time now. An inspiration to everyone, following is the list of transgender actresses working in Hollywood today: But now, slowly, the mould is breaking and we already have transgender actors and actresses who have established themselves in the industry. In all honesty, Hollywood hasn’t been too honest with the transgenders and hasn’t provided them with the roles on-screen that they really deserve. And it has taken some time for other communities to accept their identity. It has been a long battle for the transgender community to establish their status in the society. One such section is that of the transgenders. It is no secret that life has been difficult for the sections of society that refused to conform to the norms. |
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