一張舊照片 An old photo, solar eclipse?

Appeared on the poster in 香港教育大學，教育博物館

More I looked at the photo, I have got more questions than answers

Who were they?

Looks like students in High school, or university. But undergrads seldom wear school uniforms

But the school uniforms are seldomly seen in HK. This looked to be from Japan, Taiwan, Singapore, or other SE Asia countries. China?

When was it taken?

It's in black and white film days.

So can be post WWII to 70s.

The teacher was carrying a rangefinder camera. Minolta hi-matic (1972)? So likely be in 70s.

The Telescope mount is driven by some sort of AC synchronous motors, so it looked like to be in 70s. Unitron? Spacek? Coast Instruments?

If this is taken in HK, this looked like the event happened during the times when 廖慶齊was actively promoting astronomy in schools, and maybe near his residence

Where was it taken?

This is most intriguing. Most just thought it's in HK. But was it really?

What were they doing?

In broad day light, either watching the sun or moon. But there seems to some sort of sun protection filter in front of telescopes. Was it a eclipse event? Sunspot observation?

Visible solar eclipses in Asia:

21 sep 1941 2 甘肅臨洮

18 Mar 1969 ( partially visible in HK)

31 Aug 1970

18 Apr 1977

2 Oct 1978

16 Feb 1980 ( partially visible in HK)

11 Jun 1983 ( partially visible in HK)

22 Nov 1984

only 1969,78,80,83 ~~None of these~~ were visible in HK.

Solar cycle 21 1976-86. Most active in 1978-83

Hkww solar eclipse visible in Hong Kong

Weather plus

Reference

Uncle Rod

fixing old equatorial mount

香港天文學會發展史

臺北天文台簡史

80年代

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