Ah, forgot that. Pathetic. I must go and do a crossword to keep the Alzheimer's at bay.Quote:
Originally Posted by scifan57
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Ah, forgot that. Pathetic. I must go and do a crossword to keep the Alzheimer's at bay.Quote:
Originally Posted by scifan57
Hint; an accessory shines a light into this area to illuminate something.Quote:
Originally Posted by scifan57
A similar device is used in the eyepieces of astronomical telescopes.
Getting too technical for me. We need Sir Patrick Moore, the Sky at Night man who, would certainly know.Quote:
Originally Posted by scifan57
If you put this challenge in the crosshairs,you will solve it.
???Quote:
Originally Posted by scifan57
The challenge involves crosshairs in the optical device pictured in the challenge. The circled area is a feature that enables crosshairs to be used at night. What is the term that refers to crosshairs that are visible in darkness?Quote:
Originally Posted by stranding
Night sight or night vision?
It's not night vision,it was made almost 100 years ago. The monocular is not a specialized night sight,but could be used at night but crosshairs are not visible in darkness unless•••?Quote:
Originally Posted by Semel
Have no idea unless it's LCD?Quote:
Originally Posted by scifan57
Can't take time out to do some googling at the moment so must leave it a mystery. Sorry!
I can't stay to monitor the challenge,so I'll give you the answer.The answer I was looking for was illuminated reticle. The circled area in my second photo is the glass illumination port for the reticle. An accessory light was shone in this port,illuminating the crosshairs and making them visible in darkness.
The Admiral correctly answered the first question in the challenge so if he wants to post,he can do so.Otherwise the challenge is open to any IPF member who wishes to post a challenge.