Reviews

10micron AZ-HPS Mounts
Reviews

10micron AZ-HPS Mounts

10Micron AZ-HPS Mounts offer a line of premium altazimuth mounts based on the company’s popular GM-HPS line of super-accurate, absolute encoder German equatorial mounts. The 10Micron AZ-HPS series of mounts use the same absolute encoder technology as the GM-HPS mounts with instrument capacities from 55 to 330 pounds. The capability […]

Fig. 5 M-31, 32 and 110, imaged at f/5.3 with the AP telecompressor and modified Canon 6D with LPS-V4 filter. This is a composite of 5 x 5 minute and 3 x 3 minute exposures at ISO 6400.
Reviews

Astro-Physics Starfire Refractor

Astro-Physics Starfire Refractor> Ever since reading Alan Dyer’s article Astro-Physics Refractors Big & Small in the 1993 September issue of Astronomy magazine, I have dreamt of someday owning an AP-155 f/7 EDF Starfire refractor. Well, it’s taken a couple of decades but I finally acquired Astro-Physics Starfire Refractor a few […]

Image 1: The 2.25-pound, 84.4 watt-hour PowerTank next to a 22-pound, 12-volt, 22-Ah Sears DieHard 1150 sealed lead-acid battery
Reviews

Celestron Lithium PowerTank Review

Celestron Lithium PowerTank Review: The leaps between the technology of today versus that when I received an un-motorized equatorial 114-mm Newtonian reflector as a 10-year-old in 1988, are mind boggling. I would have barely recognized today’s average reflectors, with red-dot finders, go-to drives, things that plug and unplug, and that […]