By Kevin Berwick
Introduction|
SolarMax 90 Etalon |
I recently decided to buy a SolarMax 90 filter from Coronado. Before I launch into the review proper, you may be interested to hear about the process which lead me to the purchase of this filter, and my current ‘observing lifestyle’ for want of a better phrase.
I live in Dublin, Ireland and … Read the rest of this article
Drift alignment seems to be a major stumbling block for amateurs who want to move up to serious astrophotography (i.e. photography through a telescope).
Here is good method to align your telescope to the pole using the star drift method. This is a classic method from the 1980s when electronics for telescopes was just a drive corrector.
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A trip to the local hardware shop resulted in some Cuprinol 5 Star Complete Wood Treatment which is used to impregnate the wood and act as a fungus killer. I liberally applied this to one section of an inner wall, as per instructed, painting on four coats. While it was well ventilated when painted on (the roof was rolled off … Read the rest of this article
The roof is basically made of two triangular side pieces separated on the “top” side by five 2-inch x3-inch cross-beams. Two other beams, one each between the
other apexes of the triangles, were added to make the structure more rigid.
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Four wheels were positioned and marked on the bottom side of … Read the rest of this article
All the coach screws were removed and the three wall frames taken down. I lifted the floor and re-cut it so that it would fit within the inner boundaries if the wall frames rather than being flush with their outer edges. Lifting the floor was more difficult than anticipated as the heads of some of the screws had been damaged … Read the rest of this article
Having installed the pier and leveled the top plate (as described in the previous article), I made sure that everything was rock solid and that I could easily polar align the telescope before beginning construction of the observatory itself.
First Ideas For An ObservatoryAt the time I was considering building the observatory I checked out a variety of plans … Read the rest of this article
This is where I first went wrong. The widest tube I could find was 90mm aluminium piping. I sank this into concrete that was 60cm deep (I couldn’t dig any deeper – the soil was thick compressed clay). The hole I dug was 60cm square. The tube was then filled with concrete. I custom built a … Read the rest of this article
If you own a telescope, you’re familiar with how long it takes to set up your scope for an observing session. How many times, though, have you found that just as everything is ready, the clouds roll in? Or worse, it starts to rain and you make a mad dash to get the scope under cover possibly knocking something over … Read the rest of this article
[ReviewAZON asin=”1852336315″ display=”fullpost”]… Read the rest of this article
Comets are small Solar System bodies that orbit the Sun and, when close enough to the Sun, exhibit a visible coma (atmosphere) or a tail — both primarily from the effects of solar radiation upon the comet’s nucleus. Comet nuclei are themselves loose collections of ice, dust and small rocky particles, measuring a few kilometers or tens of kilometers across.… Read the rest of this article
Recommended Astronomy DVDs, Blu-Rays and 4K UHD Blu-Rays
4-Billion-Year-Old Relic From the Early Solar System Is Headed This Way
Hubble Space Telescope Finds the Most Distant Star Ever Seen
The Lessons Learned From a Simulated Asteroid Strike Over Europe
Teachers: Apply Now to the ESA Teach With Space Online Conference
First Panoramic View of Mars at Perseverance Rover Landing Site
NASA’s Webb Telescope Will Show Us More Stars at Higher Resolution
Animations of NASA’s Mars 2020 Perseverance Rover Landing
NASA Is Providing Spanish-Language Coverage for the Livestream of the December 14 Solar Eclipse
NASA Names Artemis Team of Astronauts Eligible for Early Moon Missions
The Sun Now (Visible light)
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The Sun Now (H-Alpha light)
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Aurora Oval
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Aurora Oval
(Southern Hemisphere) |
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