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Description: The Constellations Handbook is a logical guide to learning the 88 constellations. Learning the constellations is difficult. Remembering them is even harder. Have you ever wanted to look up to the night sky, name any pattern of stars and be able to tell their stories?This book groups the constellations in a logical order, so that the reader can easily learn them by their origin, and see how their stories interact with one another as a group.The last pages of this book include an index of all 88 constellations, each with a slot where you can write your own personal tips and tricks in order to memorize them with ease.The Constellations Handbook is not just another guide listing all the constellations from A to Z and their location, it is the perfect companion for stargazing, and a learning journey through the ages.

Make sure you do not tighten the screws too much or you will break the secondary mirror holder. It happened to us once and we had to completely replace the holder.

Go to the back of the telescope. You do not need any tools for this, so put the screwdriver in a safe place and simply use your fingers.

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Description: The Astrophotographer’s Journal is a portable notebook created for the purpose of recording observations, cataloguing photographs, and writing down the wonderful memories created by this hobby. This book contains more than 200 pages to memorialize your stargazing and imaging sessions, as well as a useful chart on the last pages to index exciting or important notes. Read back on the logs to see how much progress you have made through the months, the problems you overcame, and the notes taken to improve in the future. Just as the pioneers of astronomy did in their time, look up and take notes of your observations as you are the author of this star-filled journey.

Lens focal length tells us the angle of view—how much of the scene will be captured—and the magnification—how large individual elements will be. The longer the ...

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How does it work? Each screw, when being tightened, pushes the secondary mirror, giving it a different angle and so bouncing the laser in a different direction.

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Description: Discover 60 Deep Sky Objects that will considerably improve your Imaging and Processing skills! Whether you are a beginner, intermediate, or advanced astrophotographer, this detailed book of the best deep sky objects will serve as a personal guide for years to come! Discover which star clusters, nebulae, and galaxies are the easiest and most impressive to photograph for each season. Learn how to find each object in the night sky, and read our recommendations on imaging them in a quick and comprehensive way. Each target in this guide contains our advice on imaging, photos of expected results, and a useful information table. We've also included a few cool facts about each target, a map to find it in the night sky, and more!

Attach the laser collimator to the telescope, just where the eyepiece or camera would go. Make sure the target drawn on the device is facing toward the back of the telescope.

Those knobs work exactly like the screws behind the secondary mirror. Your goal here is to turn each knob until the laser is bounced back to the center of the bullseye, visible on the laser collimator. This is why it is important to attach it facing toward the back of your scope!

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customers, the material range from BK7, fused silica, sapphire and ruby, as well as other optical glass.We may have some similar stock half balls for your ...

Collimating a telescope is pretty easy, especially if using a laser, but first-timers might get confused by this simple process and end up breaking one of their mirrors (yes, we did).

Start in the front of the telescope. This is where the secondary mirror is located. What you want to do is tighten or loosen the three tiny screws that are just in the middle of the spider veins.

Sep 19, 2024 — MicroTech Instruments TFP - THz Thin Film Polarizer - Wire diameter / Wire spacing (µm): 4.3 / 1.5 Clear aperture / External diameter (mm): ...

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Synonyms for selfish and other words similar to selfish in our thesaurus. Learn more word definitions, translation, pronunciation, rhymes and more at ...

Jul 19, 2024 — The F*tan(theta) method is a more general approach to calculating distortion. It's often used for initial distortion assessment in various ...

Is Laser P-Polarized or S-Polarized? Laser light can be either p-polarized (parallel) or s-polarized (senkrecht/perpendicular), depending on the orientation ...

Apr 5, 2022 — Direct link to this answer ... % extracting the pixel values across that edge. ... figure;. plot(frequencyAxis, MTF(1:numel(MTF)/2));. xlabel(' ...

Collimatinglens

Polarised in terms of photography involves suppression, as google says 'to darken skies'. Perhaps a blatant acknowledgement that Max's situation ...

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About the Laboratory. Mass spectrometry is defined as a technique that involves analyzing ions according to their mass to charge ratio (M/Z). This technique can ...

We decided to make this tutorial, as well as a video (which you can find at the end of this post). As for most of our tutorials, this will be quick and straight to the point!

If you just bought a laser collimator, please make sure it is collimated! You can do that by placing it on a table not too far from a bright wall, and turning it on. Then, slowly roll the laser and see if there is any suspicious movement in the red dot on your wall. It should not go up or down, but just sideways. You can also attach it to your telescope and rotate it while it is on while watching the dot on the mirror. The dot should not move at all.

Jun 11, 2016 — "Density, "rho = "Mass"/"Volume" rho = (760*g)/(84*cm^3) ~= 10*g*cm^-3 to a first (very rough) approx. Doing the calculations this way, ...