I have been so preoccupied that I nearly failed to recognize that summer is nearly at an end. This made … More
Author: jimchungblog
Rebirth of a 12″ f/13 Classical Cassegrain Telescope
Afternote: (added Jan 15, 2023). This appeared in the newsletter of Starfest 2022 where I gave a talk about this … More
Exploring the Heuer Autavia “Villeneuve”
A few years earlier I had learned a little history of the Heuer watch company while writing about it’s most … More
Shooting Astro Narrowband with Medium Format Sensor (Phase One IQ260 Achromatic)
It took me sometime to gather all the small components necessary to adapt the IQ260 for some narrowband, in-city astro … More
Shooting a tire photo contest with m43
I like photo contests that start and end in a one month period because I don’t want to wait a … More
Phase One IQ260 Achromatic Digital Back – a medium format heavy weight.
I first heard of this Danish company called Phase One nearly a decade ago. Back then, they made very high … More
m43 Focus Speeds on EOS Adapted Lenses
The significant jump to 1053 cross type AF points on the new OM-1 body led me to wonder if this … More
The “Holy Grail” of Watches
It all began with a contentious post on a FB watch group. “What is the Holy Grail of watches?” Not … More
1970 Omega Constellation Reference (166.063) Calibre 1001
(images taken with E-M1.2 and Zuiko 60mm f/2.8 Macro) I bought another watch … that I don’t really need. I’m … More
Jim’s 10 inch f/8 catadioptric Herschelian Schiefspiegler telescope
Even amateur planetary observers and photographers need big aperture telescopes because when it comes to resolution, size does matter. … More