This Astro-Tech eyepiece delivers a wide 82° field for only $100. But is it sharp? Forty years ago, the US company Tele Vue revolutionized...
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Like many, I used to use my trusty laptop to control my telescope and astrophotography setup. While it worked well, the main drawbacks were...
I have been testing the Celestron’s dew control system on my Celestron EdgeHD 9.25” for the last two months at my home in Ohio,...
Astrophotography involves replacing an eyepiece with a camera. While this seems simple in theory, for the high resolution and large fields we try to...
A 20mm eyepiece with a 100° field for only $300 seems too good to be true! In eyepieces, models with the extreme apparent field...
I always recommend using flat field frames to calibrate deep sky images. My most recent imaging setup with a large full-frame camera and an...
Periodic collimation is critical for the best optical performance. But clear nights are for observing, while telescope maintenance is a cloudy night activity. Unfortunately,...
With a growing selection of affordable monochrome cameras, more imagers are now using mono cameras that require multiple filters and filter wheels. QHYCCD offers...
I recently received a 14-inch reflecting telescope I’ll be using for high-resolution deep sky imaging. While most telescopes are collimated by the manufacturer, they...
For ‘white light’ viewing of the Sun’s photosphere, many casual solar observers use front-mounted solar filters made from glass or a specialty solar film....