ZWO ASI6200MM Pro Camera Review

ZWO ASI6200MM Pro Camera full frame cooled SMOS camera

Manufacturer: ZWO Current Price: $3799 The ZWO ASI6200MM Pro is a cooled monochrome Astrophotography camera. It is manufactured by ZWO Optical, well-known in the astronomy community for producing affordable, quality equipment. The ASI6200MM Pro offers advanced features and a full-frame sensor, making it a popular choice among astrophotographers. Key Features: Sensor: The ASI6200MM Pro features … Read more

Astronomy Equipment Adapters and Threads

Threaded Canon T Rings

The M42 thread, also known as the T-thread, is a standard thread size widely used in astrophotography and camera lens connections. It is named after its metric size, which is M42x0.75. The “M” stands for metric, indicating the thread is measured in millimeters, while “42” represents the major diameter of the thread in millimeters. The … Read more

ZWO ASIAir Plus Review

ASIAIR Plus Wireless Camera Controller

ZWO ASIAir Plus Wireless Camera Controller Manufacturer: ZWO Price $299 Astrophotography can be a very rewarding hobby, capturing beautiful images of the night sky. But the learning curve can be quite high, causing many people to give up. I remember when I started in this hobby in the mid 1990’s. Digital cameras were just starting … Read more

Autoguiding Options for Astrophotography

PHD2 Guiding Graph

Do you really even need autoguiding? Serious astrophotographers know that autoguiding, although very useful is not always necessary. There are some mounts that are extremely accurate at tracking for short periods of time, even up to 5 minutes without the need for autoguiding. There are also some who would argue that dozens or even hundreds … Read more

Askar FRA500 – An Affordable Astrograph

Askar FRA500 Quintuplet Astrograph

Price: $1999 (smaller FRA300 available for $1199) What is an astrograph? The Askar FRA500 (Flat field Refractive Astrographs) is a top-of-the-line refractor telescope that is specifically designed for intermediate and advanced level astronomy enthusiasts. As the name implies, astrographs are designed specifically for astrophotography. The telescope has a 90 mm aperture and a focal length … Read more

iOptron HAE43EC Harmonic Mount Review

iOptron HAE43 telescope mount

HAE43EC (enhanced encoders)   Product: iOptron HAE43 Strain Wave AZ/EQ Mount with High Precision Encoders Manufacturer: iOptron Current Price: $4248 What are Strain Wave Mounts? Strain wave telescope mounts, also known as harmonic drive telescope mounts, are a type of motorized mount used to control the movement of telescopes. This type of mount is rapidly … Read more

Why do astronomers use red lights at night?

red light flashlight

Why do astronomers use red lights at night? It is because of the complexity of the human eye. Unlike a digital camera which has pixels of relatively equal light sensitivity, the human eye is composed of two types of light sensitive cells, rods and cones. Cones allow us to see color in bright light. Rods … Read more

eQuinox2 Smart Telescope Review

Equinox2 and included tripod

  Unistellar eQuinox2 Smart Tracking Telescope Price: $2499 (now includes smart solar filter, a $249 value!) Have you ever looked through a telescope expecting to see beautiful celestial objects in full and vivid color? Have you been disappointed when everything looks dim and fuzzy with no real color? Do you live in a city with … Read more

Right Ascension and Declination Explained

Right Ascension and Declination

How do we find objects in the sky? Right Ascension (RA) and Declination (Dec) are two important celestial coordinates used to do this. What is Right Ascension? Right Ascension (RA) is similar to longitude on the Earth’s surface, except that it is measured in hours, minutes, and seconds rather than degrees of angle. RA is … Read more

Takahashi FSQ-106EDX4 Review

Takahashi FSW106EDx4

Product: Takahashi FSQ-106ED4X Manufacturer: Takahashi Price: $7330 as of the time of this review The Takahashi FSQ-106EDX4EDX4 is a high-quality, apochromatic refractor telescope that is designed for astrophotography and visual observing. It is a redesign of the venerable FSQ-106 telescope. It has a compact size and a relatively large aperture of 106mm, making it an … Read more