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

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

Post by MjrTom » Wed Jul 31, 2013 2:13 am

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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Ha: Vixen 100mm PST Mod/Solarscope BF20 - Solarscope (IOM) SV50 DS - Borg 45ED/SM40/BF10
White Light: Takahashi FC100-D / Borg 77EDII - Baader Cool Ceramic Herschel Wedge
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Re: **Wanted** front mounted etalon (40mm-50mm)

Post by marktownley » Wed Jul 31, 2013 5:29 am

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

Post by MjrTom » Wed Jul 31, 2013 9:20 pm

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
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Ha: Vixen 100mm PST Mod/Solarscope BF20 - Solarscope (IOM) SV50 DS - Borg 45ED/SM40/BF10
White Light: Takahashi FC100-D / Borg 77EDII - Baader Cool Ceramic Herschel Wedge
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Re: **Wanted** front mounted etalon (40mm-50mm)

Post by MjrTom » Thu Sep 05, 2013 12:19 am

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

Thanks

Mark
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Ha: Vixen 100mm PST Mod/Solarscope BF20 - Solarscope (IOM) SV50 DS - Borg 45ED/SM40/BF10
White Light: Takahashi FC100-D / Borg 77EDII - Baader Cool Ceramic Herschel Wedge
IOptron iEQ45GT & ZEQ25GT / GIRO III - DMK 31AU03.AS

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

Post by swisswalter » Thu Sep 05, 2013 9:09 pm

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 ;)

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

Post by MjrTom » Fri Sep 06, 2013 3:15 pm

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
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Ha: Vixen 100mm PST Mod/Solarscope BF20 - Solarscope (IOM) SV50 DS - Borg 45ED/SM40/BF10
White Light: Takahashi FC100-D / Borg 77EDII - Baader Cool Ceramic Herschel Wedge
IOptron iEQ45GT & ZEQ25GT / GIRO III - DMK 31AU03.AS

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

Post by MjrTom » Sun Sep 08, 2013 5:44 am

Hi Walter,

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

It's Brummymark1 at hotmail.com

Mark
Mark

Ha: Vixen 100mm PST Mod/Solarscope BF20 - Solarscope (IOM) SV50 DS - Borg 45ED/SM40/BF10
White Light: Takahashi FC100-D / Borg 77EDII - Baader Cool Ceramic Herschel Wedge
IOptron iEQ45GT & ZEQ25GT / GIRO III - DMK 31AU03.AS

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

Post by swisswalter » Sat Sep 14, 2013 8:45 am

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 ;)

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

Post by MjrTom » Mon Sep 16, 2013 10:23 am

Hi Mark

you'll get an email soon ;-)

Thanks Walter ;)
Mark

Ha: Vixen 100mm PST Mod/Solarscope BF20 - Solarscope (IOM) SV50 DS - Borg 45ED/SM40/BF10
White Light: Takahashi FC100-D / Borg 77EDII - Baader Cool Ceramic Herschel Wedge
IOptron iEQ45GT & ZEQ25GT / GIRO III - DMK 31AU03.AS

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

Post by MjrTom » Tue Sep 17, 2013 8:53 pm

Hello,

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

Thanks for the posts

Mark
Mark

Ha: Vixen 100mm PST Mod/Solarscope BF20 - Solarscope (IOM) SV50 DS - Borg 45ED/SM40/BF10
White Light: Takahashi FC100-D / Borg 77EDII - Baader Cool Ceramic Herschel Wedge
IOptron iEQ45GT & ZEQ25GT / GIRO III - DMK 31AU03.AS

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

Post by prof_steve » Fri Sep 20, 2013 9:03 am

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
Solarscope SV-50, Basler PIA2400-12gm camera.

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