Vixen A80 screw on ERF cell

Frankenscope? Let's see it!***be advised that NOTHING in this forum has been safety tested and you are reading and using these posts at your own peril. blah, blah, blah... dont mess around with your eyesight when it comes to solar astronomy. Use appropriate filtration at all times...
Post Reply
occamfan
The Sun?
The Sun?
Posts: 15
Joined: Wed Jan 25, 2012 1:29 pm

Vixen A80 screw on ERF cell

Post by occamfan » Wed Feb 22, 2012 5:58 am

I never like the idea of bits falling off the telescope while viewing the sun,so I thought you may be interested in seeing this Vixen A80 cell.I started off with a Daystar 80mm ERF whose original cell was too large;so I cut down the Vixen dewshield and using bits of aluminium,managed to make this.



It screws on using the original Vixen fitting,and keeps the ERF secure.

User avatar
marktownley
Librarian
Librarian
Posts: 24452
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Contact:

Re: Vixen A80 screw on ERF cell

Post by marktownley » Wed Feb 22, 2012 6:58 am

Very impressive peice of kit! Screw on is definitely the way forward, these little nylon screws that some cells have to hold expensive bits of glass on always make me feel uneasy...
Image
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!

User avatar
Merlin66
Librarian
Librarian
Posts: 3155
Joined: Tue Dec 13, 2011 1:23 pm
Location: St Leonards, Australia
Contact:

Re: Vixen A80 screw on ERF cell

Post by Merlin66 » Wed Feb 22, 2012 7:06 am

Excellent job, well done!
Pity you can't use it with your next "upgrade" -to the 150mm scope ;-)
(The filter looks very "orange" - Not sure what glass the Daystar crowd use - a red Schott?)
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

occamfan
The Sun?
The Sun?
Posts: 15
Joined: Wed Jan 25, 2012 1:29 pm

Re: Vixen A80 screw on ERF cell

Post by occamfan » Wed Feb 22, 2012 8:38 am

The Daystar ERF filters changed colour from red to yellow when they changed their manufacturing process from poured, to drawn glass,as they had quality control issues previously.At the same time they also altered the bandpass characteristics of the glass.

User avatar
Merlin66
Librarian
Librarian
Posts: 3155
Joined: Tue Dec 13, 2011 1:23 pm
Location: St Leonards, Australia
Contact:

Re: Vixen A80 screw on ERF cell

Post by Merlin66 » Wed Feb 22, 2012 8:44 am

Thanks for that.
It certainly doesn't say much (technical stuff) on their website...
http://www.daystarfilters.com/energy.shtml#
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

occamfan
The Sun?
The Sun?
Posts: 15
Joined: Wed Jan 25, 2012 1:29 pm

Re: Vixen A80 screw on ERF cell

Post by occamfan » Wed Feb 22, 2012 9:11 am


User avatar
Merlin66
Librarian
Librarian
Posts: 3155
Joined: Tue Dec 13, 2011 1:23 pm
Location: St Leonards, Australia
Contact:

Re: Vixen A80 screw on ERF cell

Post by Merlin66 » Wed Feb 22, 2012 9:34 am

Ahhh
Missed that!
Thanks for pointing it out...I understand what they are saying, but IMHO the more of the "Non-Ha" spectrum you block with an ERF the better.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

peter drew
Im an EXPERT!
Im an EXPERT!
Posts: 263
Joined: Sat Feb 04, 2012 6:18 pm

Re: Vixen A80 screw on ERF cell

Post by peter drew » Wed Feb 22, 2012 10:42 am

Very nice looking job. At least with Ha, if the filter does fall off, the instant damage is to the filter not the eye, as might be the case with a white light filter. A liitle more expensive though!

andreahaku
Im an EXPERT!
Im an EXPERT!
Posts: 395
Joined: Thu Feb 09, 2012 5:00 pm

Re: Vixen A80 screw on ERF cell

Post by andreahaku » Wed Feb 22, 2012 5:29 pm

Great solution. Very clean and safe ;)
Good job!

florencior
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1941
Joined: Mon Jan 23, 2012 6:38 pm

Re: Vixen A80 screw on ERF cell

Post by florencior » Wed Feb 22, 2012 11:24 pm

Good job, the mounting inside the dewshield is a great idea
--------------------------

Florencio

http://florencior.fotoastronomia.net

User avatar
swisswalter
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 17951
Joined: Thu Feb 06, 2014 4:28 am
Location: Switzerland
Contact:

Re: Vixen A80 screw on ERF cell

Post by swisswalter » Thu Feb 23, 2012 5:57 am

Hi Charles

a very fine job. That is the way to do it :bow:
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

Post Reply

Who is online

Users browsing this forum: No registered users and 4 guests