Small hair looking damage on new lenses

[Matthieu]

Hi all,

I received new lenses ordered a few weeks ago yesterday and when trying them in daylight saw some strange small hair looking half moons all over the lenses. I've attached a picture out of focus as it makes it quite clear when zooming in.

I've tried them out last night with my small scope (70mm f/10) on nebulae, clusters and double stars and it looks fine but I'm concerned that this may not be fine when I try them on my much bigger 16'' f/4.5. That scope is currently stored elsewhere in boxes until I can get it to my shed which is why I'm unable to try it out.

My questions are:

• will the bigger scope make these more visible even at night due to increased brightness
• if the bigger scope will make it more obvious, would you recommend trying to clean them myself or would you return them

Thanks in advance for any input.

Matt

[bojan]

Not sure what you are talking about.. are they eyepieces? What kind and what brand?

Very probably not the issue...

[GUS.K (Ivan)]

All I see is dust, it won't affect the view whatsoever.

[Matthieu]

Thanks for the replies Bojan and Gus.k.

I meant eyepieces rather than lenses, sorry.

They are Celestron X-Cel LX 12, 7 and 5mm. I've attached a higher quality version of the picture that is taken with my phone straight into one of the eyepieces when the telescope is out of focus. Note that I also have 25 and 9mm eyepieces in the same range and they do not exhibit these "markings".

In my testing, it wasn't an issue at night on a small telescope but was an issue for terrestrial observation.

Based on Gus.k's reply, this shouldn't be more of an issue with a bigger aperture. I was concerned that the increased brightness could make it an issue.

Thanks again

[bojan]

Dust...

[Emc2 (Jon)]

Just little specks of dust - zero impact on views

[Garyh]

All those spots seem to have a radius around the lens. Looks like contamination during polishing? I'd be checking with a loop or a short focal length eyepiece to see if they are scratches and return them if so.
Could be glass defects as well, it happens.