Rendering the Heywhatsthat.com horizon in Stellarium
I am very excited to announce to you a brand new tool, which has been developed just after the newest Stellarium edition was released. I mean the Stellarium version 0.2 onwards, which is the...
Author: Krukarius
Astrophotography with Sigma 150-600mm DG OS Contemporary and dedicated teleconverters
The summary of my amateur test with a Sigma 150-600mm DG OS Contemporary lens and two teleconverters TC-1401 and TC-2001 includes the astrophotography section. I wanted to check this lens in terms of its...
The visibility of Venus before the 2020 inferior conjunction
The inferior conjunction of Venus with the Sun happens almost every year. Almost, because in about the 8-year cycle of our neighbor planet she passes the Sun-Earth line 5 times (the synodic cycle counts...
Teleconverter 2x (TC-2001) for the 150-600mm f/5-6.3 Contemporary and other Sigma lenses
The Sigma 150-600mm DG OS HSM f/5 – 6.3 + teleconverter kit TC-1401 bundle wasn’t enough for me. I just wanted to see, what the world looks like through the maximum telephoto lens, affordable...
The foliage fall mystery
Have you ever wondered what factors determine the leaves falling from trees in the autumn? Or maybe you noticed, that the period, when leaves fall on the ground varies every year. This article is...
Teleconverter 1.4x (TC-1401) for the 150-600mm f/5-6.3 Contemporary and other Sigma lenses
The TC1401 teleconverter is a good magnifier for some Sigma lenses, bringing your object by 1.4x closer than Sigma focal length can for you. If you are buying the Sigma 150-600mm f/5 – 6.3...
Creating your own speed limit map in QGIS and showing it interactively in Google Maps
Recently I showed you how to collect the speed limit data about the specified section of the road. It’s obviously a huge step toward the speed limit map preparation. Reading the last article you...
Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary – a fantastic choice for distant landscape photography
My dream about a long telephoto lens finally came through. After a few weeks’s consideration, I bought the Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary lens for my Nikon D5300 camera, which also included...
The simplest way to check the road speed limit
The road speed limit is somewhat guidance of what speed is considered safe and reasonable in the given section of the road or area. The primary goal of the speed limit is to keep...
The costless way to geocoding addresses in Excel – part 3, bulk data geocoding with Nominatim and other geocoding tools
The 3rd part of this vast article about geocoding is slated for discussion about another free geocoding tool for MS Excel, namely the OpenStreetMap Nominatim geocoding and other remaining tools, which could be worth...
The costless way to geocoding addresses in Excel – part 2, via Bing Maps API
It’s been a while since the previous part of this article when I showed you the way of geocoding the addresses via Google Sheets. Here you will get the knowledge of geocoding straight from...
Good solution to georeferencing the AutoCAD DWG drawing in QGIS 3x
Today I would like to demonstrate how to georeference the AutoCad .dwg file in QGIS. The .dwg extension keeps layers, colours, line thickness etc. in other words all information included in the drawing file....
Smart way of unlocking the Excel VBA project and workbook
Probably experienced a sad situation when the password for your Excel workbook is lost or forgotten. Head up, because it’s not the end of the world. Nowadays we can easily break down the forgotten...
Digitizing administrative maps in Google Earth
The digitizing process is needed when we want to transform our map into vector data. This process is aimed at tracing the map features, which later appear as coordinates in either point, line, or...
Launching Google Maps from Excel with Chrome browser
The work with addresses is quite often in our Excel spreadsheet. Today I would like to demonstrate to you how to parse the address string in the Excel cell in order to make it...
The weather-based long range plans for your astronomical expedition
If you are an astronomer, astrophotographer, or even amateur tourist, you have some dreams about long-haul trips for sure. Quite often these trips are such long-range plans, because of our financial situation or spare...
Tokina 11-16mm AT-X PRO f2/8 DX II – one of the best wide-angle options for DSLR camera
Finally, I decided to buy this lens after a very long contemplation. It was the longest deal with my DSLR purchase ever, which lasted more than 2 years frankly. The reason, why this optic...
Venus near Antares – understanding the great Venus orbit cycle, part 2
This is the second part of the article, explaining the great Venus orbit cycle, which repeats on average every 3159-3160 years. Reminding the basic mechanism it’s exactly 395 8-year cycles, where the planet back...
Venus and the Pleiades together on the sky – understanding the great Venus orbit cycle, part 1
The biggest celestial event in April 2020 was definitely the meeting between our closest planet Venus and one of the most renowned open star clusters – the Pleiades. The phenomenon was interesting due to...
Travelling & Sightseeing from home
Now is not the best time for traveling around the world, because it’s restricted due to the coronavirus outbreak worldwide. Nevertheless, if our life is affected by a pandemic or not, this type of...