These are becoming increasingly rarer now and don't come up for sale very often. 85mm in diameter, mounted in a home made cell approximately 123mm in diameter to give 80mm free aperture. Could be removed from cell quite easily, just unscrews. Passes Ha, continuum, CaK and CaH. Few skiffs on the faces, but nothing that affects performance or safety.
More information see below:
https://beloptik.de/en/erf-energy-rejection-filter/
£250 p&p included within UK, postage at buyers cost outside UK. Payment via paypal 'friends and family' or buyer pays fees.
P1010245 by Mark Townley, on Flickr
P1010248 by Mark Townley, on Flickr
P1010249 by Mark Townley, on Flickr
P1010250 by Mark Townley, on Flickr
P1010251 by Mark Townley, on Flickr
Beloptik 85mm TriBand ERF
- marktownley
- Librarian
- Posts: 42545
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20813 times
- Been thanked: 10485 times
- Contact:
Beloptik 85mm TriBand ERF
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
- marktownley
- Librarian
- Posts: 42545
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20813 times
- Been thanked: 10485 times
- Contact:
Re: Beloptik 85mm TriBand ERF
Pending sale...
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
- marktownley
- Librarian
- Posts: 42545
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20813 times
- Been thanked: 10485 times
- Contact:
Re: Beloptik 85mm TriBand ERF
Sold
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!