Times cryptic Jumbo 24/11

[call04]

Just 3 to get but stuck; any help appreciated:
12D. Attention spans variable with female kept in field for viewers' protection (7) E?E?E??
23A. Private organisation hampered by restriction in Eelch city (6) ?A?G??
27D. Astronomer setting up time reference to be sure (7) S?Y?E?T

[call04]

Sorry - 23A finishes 'Welsh city'

[kettledrum]

23a Bangor ? ban (restriction) + anag 'org' . I don't like it much !

[beejay1124]

23 bangor ?

[kettledrum]

27d. Seyfert - reading from the end ... t(ime) + ref + yes

[Mitiy]

EYEWEAR

I read BANGOR as BAR (restriction) around NGO (non governmental organisation)

[d1f2l3]

12d ? Eyewear , not certain about this but ey(ewe)ar.

[geo0939]

I thought of eyewear for 12d, but unsure.

[kettledrum]

Thank you Mitiy - while cooking Sunday lunch, the proper logic behind Bangor came to me .... thought I must confirm it ... glad you'd got there already to reassure call04.

[Mitiy]

EYEWEAR = EAR attention EWE female Y variable

[call04]

Thank you all.