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Observing

Telescope Buying Guide

Beginner Telescope Buying Guide: Dobsonians, Binoculars & More

September 12, 2018
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141 Comments
A beginner telescope buyer should start with 7x50 binoculars and star charts, then join a local astronomy club to try different telescopes before buying.…
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solarimaging

Solar System Imaging: Telescope, Camera & Filters Guide

October 4, 2017
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4 Comments
Introduction Some of the most visible features in our sky are solar system objects: the Sun, the Moon, and the planets. These objects are generally much…
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15 of the Best PF 2017 Eclipse Photos

August 24, 2017
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69 Comments
The 2017 August Eclipse really was something special. Fortunately Physics Forums has great photographers and snapped some remarkable shots. Here are a…
https://www.physicsforums.com/insights/wp-content/uploads/2017/08/2017eclipse-photos.png 135 240 Greg Bernhardt https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png Greg Bernhardt2017-08-24 19:24:242019-05-22 15:05:4115 of the Best PF 2017 Eclipse Photos
astro_advanced

Astrophotography: Mounts, Tracking & Image Processing

October 16, 2016
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2 Comments
Series linksPart 1: Introduction to Astrophotography Part 2: Intermediate Astrophotography Part 3: Advanced AstrophotographyMotivation "I’ve…
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astro_inter

Astrophotography Guide: Equipment, Exposure & Processing

October 14, 2016
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2 Comments
Complete Series Part 1: Introduction Astrophotography Part 2: Intermediate Astrophotography Part 3: Advanced Astrophotography Level…
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astro_intro

Astrophotography Guide: Beginner to Advanced Tips & Gear

October 12, 2016
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1 Comment
Part 1: Introduction to Astrophotography Part 2: Intermediate Astrophotography Part 3: Advanced AstrophotographySeries & prerequisites For…
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earth year

How to Scientifically Measure How Many Days Are in a Year

May 22, 2015
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75 Comments
How many days are there in a year? Ask pretty much anyone and they will tell you 365, except for leaps years which have 366. In addition,…
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solar_eclipse

Solar Eclipse Viewing & Safety Guide: What to Expect

September 22, 2014
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0 Comments
A solar eclipse is safe to view with the naked eye only during totality, the brief period when the Moon completely covers the Sun. At every other stage…
https://www.physicsforums.com/insights/wp-content/uploads/2018/09/solar_eclipse.png 135 240 Greg Bernhardt https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png Greg Bernhardt2014-09-22 14:44:582026-07-31 09:50:43Solar Eclipse Viewing & Safety Guide: What to Expect

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