Hello All
I have come across a nicely priced 70mm semi-apo made by Ian King. I think this is a Chinese clone also used by WO and TS.
I should be receiving it over the next couple of days and want to use it with my two SM60s mounted on the front.
Can anyone in the UK let me know of a good source of adapter rings to mount the etalons on the dew shield of the scope? Maybe someone already uses this same scope in a similar configuration. I think the SM60 has 77mm effective diameter with 1mm pitch. Does anyone know if this is standard so that a photographic coupling ring can be used?
Anyhow I shall be finding out shortly!
Clear skies! B)
Roberto
A really simple adaptation - not modification - question
- marktownley
- Librarian
- Posts: 42556
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20826 times
- Been thanked: 10499 times
- Contact:
Re: A really simple adaptation - not modification - question
Hi Roberto,
I use the same scope with my DS40 etalons. The dew cap is a screw on metal jobby, easiest way is to just use a lathe to pop a ~78mm hole through the middle of it, then use some bog standard 77mm adapter rings off fleabay or wherever to screw etalons to the dew shield. Job done.
Mark
I use the same scope with my DS40 etalons. The dew cap is a screw on metal jobby, easiest way is to just use a lathe to pop a ~78mm hole through the middle of it, then use some bog standard 77mm adapter rings off fleabay or wherever to screw etalons to the dew shield. Job done.
Mark
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!
-
- Im an EXPERT!
- Posts: 274
- Joined: Thu May 03, 2012 1:57 pm
- Has thanked: 10 times
- Been thanked: 12 times
Re: A really simple adaptation - not modification - question
Hi Mark
Thanks for the feedback. I would like to keep the scope for dual observing so may have to go the adapter ring route. I think I will end up taking it to a camera shop to see if I can find something standard that fits.
Thanks again
Roberto
Thanks for the feedback. I would like to keep the scope for dual observing so may have to go the adapter ring route. I think I will end up taking it to a camera shop to see if I can find something standard that fits.
Thanks again
Roberto
- marktownley
- Librarian
- Posts: 42556
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20826 times
- Been thanked: 10499 times
- Contact:
Re: A really simple adaptation - not modification - question
Hi roberto.
I doubt you'll find an adapter that fits - the thread on the dew shield is not a standard size. If you want another dew cap to use on the scope (if you modified the original one) then I found a plastic dew cap from my pair of 20x80 binoculars was a good fit.
Mark
I doubt you'll find an adapter that fits - the thread on the dew shield is not a standard size. If you want another dew cap to use on the scope (if you modified the original one) then I found a plastic dew cap from my pair of 20x80 binoculars was a good fit.
Mark
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!
-
- Im an EXPERT!
- Posts: 274
- Joined: Thu May 03, 2012 1:57 pm
- Has thanked: 10 times
- Been thanked: 12 times
Re: A really simple adaptation - not modification - question
I see. Will have to do that then Mark. Many thanks again.
Roberto
Roberto
- Merlin66
- Librarian
- Posts: 3972
- Joined: Tue Dec 13, 2011 1:23 pm
- Location: Junortoun, Australia
- Has thanked: 174 times
- Been thanked: 619 times
- Contact:
Re: A really simple adaptation - not modification - question
Here's a sketch of the SM60 adaptor plate I use on the front of the ED80.
May help determine the thread etc.
May help determine the thread etc.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
-
- Im an EXPERT!
- Posts: 274
- Joined: Thu May 03, 2012 1:57 pm
- Has thanked: 10 times
- Been thanked: 12 times
Re: A really simple adaptation - not modification - question
Many thanks this is very useful. I will have to find a good machinist nearby with a nice lathe to do this for me.
Thanks again
Roberto
Thanks again
Roberto