(meteorobs) Large grating for Spectroscopy

[Ed Majden]

Large gratings such as the one below can be used for meteor  
spectroscopy in a reflection mode.  See the paper by David Airey,  
J.Br.Astron.Assoc. 109, 4, 1999.


> Subject: Large grating for Auction
>
>
> 	If your interested in getting into serious spectroscopy there is a  
> large diffraction grating available on Astromart.  I've been in  
> contact with the fellow and he says a similar replacement grating  
> would cost $9000 but he will accept bids of around $1000 for it.  I  
> would buy it but can't afford it right now.
> 	I've attached his email to me but if anyone is interested you can  
> contact him for more information.
>
> From: Peter Foukal <PVFoukal at Comcast.net>
> 	Date: April 20, 2008 10:34:15 AM PDT
> 	To: 'Ed Majden' <epmajden at shaw.ca>
> 	Subject: RE: ASTROMART - Response to ad #555548
>
> 	Sorry - I thought that was in the ad -  1200 l/mm, 180 mm  
> diameter , this a
> 	real ruled ( not holographic) grating. Blaze into 750 nm, in near  
> IR. Hasn't
> 	been out of its box since 1991 - used once on an eclipse  
> experiment. I can
> 	get you a photo, although it won't show much.I have all the  
> original spec
> 	sheet from MR, if you'd like me to scan that to you.
>
> 	Pls go ahead and post it.
>
> 	He calls it a "real ruled" grating, but I suspect it is a  
> precision reflection type replica grating.  This grating came from  
> the Richardson Grating Lab.

>
> Good luck:
> Ed Majden
> Courtenay, B.C.