宫商角徵

The relentless pursuit of perfection.

Friday, December 13, 2019

Some things to look for when comparing eyepieces - Donald Pensack

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https://www.cloudynights.com/topic/539425-docter-and-delos/page-3#entry7353054 1. Chromatic Aberration. This is essentially two differe...
Wednesday, January 30, 2019

The first FS-152

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Friday, December 01, 2017

2010 Telescope Ranking by Mr Yoshida (吉田 弘)

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(101点) Takahashi μ-300  (96点) ASTRO-PHYSICS 160EDF  (96点) Zeiss APQ150  (95点) Takahashi TOA-150  (95点) TMB 152mm/F8-CNC-LW  (95点) Takah...
Wednesday, November 15, 2017

ASTRO-PHYSICS SUPER PLANETARY SERIES EYEPIECES

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http://www.company7.com/astrophy/options/apsuperplan.html Introduced Summer 2004 in limited quantity - like all other AP...

CARL ZEISS "ABBE ORTHOSCOPIC" EYEPIECES

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http://www.company7.com/zeiss/products/czabbeoclr.html CARL ZEISS "ABBE ORTHOSCOPIC" EYEPIECES The new standard of excell...
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Howard
Shanghai, China
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