Gazer

gaze  (gz)

intr.v. gazed, gaz·ing, gaz·es

To look steadily, intently, and with fixed attention.

n.

A steady, fixed look.

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[Middle English gasen, probably of Scandinavian origin.]

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gazer n.

Synonyms: gaze, stare, gape, gawk, glare¹, peer¹
These verbs mean to look long and intently. Gaze is often indicative of wonder, fascination, awe, or admiration: gazing at the stars.
Stare can indicate curiosity, boldness, insolence, or stupidity: stared at them in disbelief.
Gape suggests a prolonged open-mouthed look reflecting amazement, awe, or lack of intelligence: tourists gaping at the sights.
To gawk is to gape or stare stupidly: Drivers gawked at the disabled truck.
To glare is to fix another with a hard, piercing stare: glared furiously at me.
To peer is to look narrowly, searchingly, and seemingly with difficulty: peered at us through her glasses.