**FOUND** front mounted etalon (40mm-50mm)

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MjrTom

**FOUND** front mounted etalon (40mm-50mm)

Post by MjrTom »

Hello all B)

I am on the lookout for an extra etalon for my Solarscope SV50
Currently I am using a Coronado SM40/ PST double stack unit which gives great views.
However tiltuning is very hit and miss and would like to get hold of a Richview one of possible.

Alternatively an SF50 front etalon but the cost might be an issue.
Lastly a Lunt LS50 might also do the job, not sure of the diameter of the filter housing an whether a suitable adapter could be made.

The advantage of the SM40 a 62mm to 52mm step down ring is all that is needed to attach the SM40 etalon to the SV50.

Mark


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Re: **Wanted** front mounted etalon (40mm-50mm)

Post by marktownley »

Mark,

When you say tuning is very hit and miss with the sm40 unit, what do you mean? Can you elaborate a bit more? There may be a few tricks can offer to make it behave more like you want. A richview 40 may just display the same issues as you're having already...


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MjrTom

Re: **Wanted** front mounted etalon (40mm-50mm)

Post by MjrTom »

Thanks for your input Mark.

The tilt tuner is very sensitive and the tilt wheel is very loose.
It tilts fine but its difficult to tune it accurately. This is my reasoning for showing interest in the richview etalon since this allows finer adjustment.

Since my original post I thought I would strip down the tilt assembly and I noticed that only one tilt compression spring present however there is a drilled recess for one each side of the brass thumb wheel.
Since I bought the filter secondhand a previous owner must have been tinkering with it and lost one of the springs.
I found two matching springs in my box of bits which although not quite the same but should do the job.
I also added a bit of Teflon tape to the threads of the brass thumb wheel and now the tuning seems much more positive.

Hopefully the sun will be out tomorrow and I can double check it.

I would still like to look at options for other etalons if anyone has anything going spare :)

Mark


MjrTom

Re: **Wanted** front mounted etalon (40mm-50mm)

Post by MjrTom »

Still on the look out for any smallish front mounted etalons ;)

Thanks

Mark


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Re: **Wanted** front mounted etalon (40mm-50mm)

Post by swisswalter »

Hi Mark

we could speak about a LS50, mint conditions but expensive ;-)


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 ;)
MjrTom

Re: **Wanted** front mounted etalon (40mm-50mm)

Post by MjrTom »

Hi Mark

we could speak about a LS50, mint conditions but expensive ;-)

Hello Walter,

Thanks for replying. :)

I suspect that it might be out of my price range but we can discuss it in more detail.

My email is brummymark at hotmail dot com.

Mark


MjrTom

Re: **Wanted** front mounted etalon (40mm-50mm)

Post by MjrTom »

Hi Walter,

Sorry just realised that my email address was wrong...

It's Brummymark1 at hotmail.com

Mark


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Re: **Wanted** front mounted etalon (40mm-50mm)

Post by swisswalter »

Hi Mark

you'll get an email soon ;-)


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 ;)
MjrTom

Re: **Wanted** front mounted etalon (40mm-50mm)

Post by MjrTom »

Hi Mark

you'll get an email soon ;-)

Thanks Walter ;)


MjrTom

Re: **Found** front mounted etalon (40mm-50mm)

Post by MjrTom »

Hello,

I have secured a second SF50 filter for my Solarscope SV50.

Thanks for the posts

Mark


prof_steve

Re: **Found** front mounted etalon (40mm-50mm)

Post by prof_steve »

Hi Mark..thats cool ! I am thinking of also going down the DS route on my SV-50 though it is one of the very early all black versions with allen key tuning of the etalon. I'll certainly look forward to seeing how your system performs...

steve


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