Scratch on primary mirror

Forgey (Paula) · #1 22-07-2011, 10:32 AM

Hi, not sure but I think its a scratch on the primary mirror on my 10"gso dob about 1cm off centre.
I just spoke to Andrews communications where I got it from and he said that's is normal for small scratches on the mirror and it won't affect it at all.
Is this right or should I be sending it back to tem to look at it?
I've only had the scope 2 days.

asimov (John) · #2 22-07-2011, 10:37 AM

'Normal' for a scratch to be on optics? NO it is not normal lol.

It'd be back in the post by now if it were me. Just make sure it IS a scratch though.

dannat (Daniel) · #3 22-07-2011, 10:39 AM

how long is it? as a new product it should not have come like that, they should be offering a replacement or a discount - perhaps a $50 voucher or something...
in saying this though small scratches will most likely not be discernible at the eyepiece - & you will not know its there

Forgey (Paula) · #4 22-07-2011, 10:49 AM

It's not very long about 1cm and u can only see it in a certian light/position u have to keep moving your head to see it.

Forgey (Paula) · #5 22-07-2011, 11:04 AM

I just spoke to a guy at Bintel and he said a small scratch won't affect it at all but I would be entitled to a replacement/new/refund.

ZeroID (Brent) · #6 22-07-2011, 11:46 AM

If it's 1 cm off centre it will be masked by the secondary mirror anyway. If you centre spotted your primary mirror it would be covered ?

asimov (John) · #7 22-07-2011, 12:31 PM

Yeah, I should have mentioned a potential scratch that size won't effect your views. I still say it certainly isn't 'normal' per se. If you are willing to accept it as such, it's your choice. Good luck with whatever you decide to do

Forgey (Paula) · #8 22-07-2011, 12:49 PM

Yeah don't know if it actually is a scratch yet. I'm at work ATM so will gave a good look when I get home.

asimov (John) · #9 22-07-2011, 02:21 PM

Yep. I saw a massive scratch on one of my scopes once - Turned out to be a cat hair, lol.