Williams 102 mod?
Williams 102 mod?
In my quest to upgrade from my PST I have enquired as to buying a new Meade or Lunt and it has been suggested that I could mod a refractor -question, I have a Williams Megrez 102mm which I use for DSO imaging, would this be suitable for modification. I would not want it to be permanent but be able to remove filters and use for night imaging. I assume from studying the posts on the forum that I would need a BF and a ERF for this conversion. Can anyone tell me if this is a goer and what filters I would need to purchase and where to get them
Many Thanks, great Forum
Robin
Many Thanks, great Forum
Robin
Lunt LS60THa / B1200 / LS60Fha / DMK51AOU2 / DMK21AOU2 / Revelation 6 & 8" RC / Opticon Minitower 11 & Startracker / Mad Red Setter and understanding Wife
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Re: Williams 102 mod?
Hi Robin
depending on the focal length there is more to do. Has it f/10 ?
depending on the focal length there is more to do. Has it f/10 ?
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Re: Williams 102 mod?
Hi Walter
Its a f/7
Robin
Its a f/7
Robin
Lunt LS60THa / B1200 / LS60Fha / DMK51AOU2 / DMK21AOU2 / Revelation 6 & 8" RC / Opticon Minitower 11 & Startracker / Mad Red Setter and understanding Wife
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Re: Williams 102 mod?
Hi Robin
so you need a 25mm negativ lens with -145 mm FL to be put up front the PST mod
so you need a 25mm negativ lens with -145 mm FL to be put up front the PST mod
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: Williams 102 mod?
OK, easiest and cheapest way to mod with this scope:
Get a 75mm Baader D-ERF http://www.teleskop-express.de/shop/pro ... ation.html 255 Euros
Get a PST nosepice ~£25
You would then have a 70mm stage 1 PST mod for less than 300 quid.
To improve, go to stage 2, with a couple more adapters and a SCT focuser....
Get a 75mm Baader D-ERF http://www.teleskop-express.de/shop/pro ... ation.html 255 Euros
Get a PST nosepice ~£25
You would then have a 70mm stage 1 PST mod for less than 300 quid.
To improve, go to stage 2, with a couple more adapters and a SCT focuser....
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Re: Williams 102 mod?
Hi Mark
Thanks, where could I obtain a PST nosepiece £25 Or I don't mind investing in a BF and would I need a filter holder to match the 102mm ?
Robin
Thanks, where could I obtain a PST nosepiece £25 Or I don't mind investing in a BF and would I need a filter holder to match the 102mm ?
Robin
Lunt LS60THa / B1200 / LS60Fha / DMK51AOU2 / DMK21AOU2 / Revelation 6 & 8" RC / Opticon Minitower 11 & Startracker / Mad Red Setter and understanding Wife
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Re: Williams 102 mod?
http://www.aokswiss.ch/d/zub/adapter/50.8-pst.html
Used like this in the picture you would not need another BF. I can machine you a filter cell holder for the D-ERF.
Used like this in the picture you would not need another BF. I can machine you a filter cell holder for the D-ERF.
http://brierleyhillsolar.blogspot.co.uk/
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Re: Williams 102 mod?
http://www.aokswiss.ch/d/zub/adapter/50.8-pst.html
Used like this in the picture you would not need another BF. I can machine you a filter cell holder for the D-ERF.
Hi Mark
can you also maschine a filterholder for a 203 mm lens with threads
Used like this in the picture you would not need another BF. I can machine you a filter cell holder for the D-ERF.
Hi Mark
can you also maschine a filterholder for a 203 mm lens with threads
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
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: Williams 102 mod?
Hi Mark
can you also maschine a filterholder for a 203 mm lens with threads
I could if you need me to - I assume to hold an ERF? It wouldn't have threads, but would be easy enough to engineer an interference fit...
can you also maschine a filterholder for a 203 mm lens with threads
I could if you need me to - I assume to hold an ERF? It wouldn't have threads, but would be easy enough to engineer an interference fit...
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!
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Re: Williams 102 mod?
Hi Mark
great, absolutely great
We will discuss that at the next outreach at wolfhalden ;-)
great, absolutely great
We will discuss that at the next outreach at wolfhalden ;-)
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
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: Williams 102 mod?
If you give me the sizes beforehand I will bring it to Wolfhalden for the outreach
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Re: Williams 102 mod?
Robin, a couple of comments...
1. Make sure you have enough space to get the PST etalon 200mm inside prime focus.
2. The PST etalon works at f10 (unless you change lenses on the assembly) which will result in an effective 70mm aperture.
1. Make sure you have enough space to get the PST etalon 200mm inside prime focus.
2. The PST etalon works at f10 (unless you change lenses on the assembly) which will result in an effective 70mm aperture.
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Re: Williams 102 mod?
Thanks Guys for all your advice I am now going to consider whether to carry out a mod or invest in a new telescope all together, I want to get the best out of imaging within my budget a mod may not be the answer. Thanks again
Robin
Robin
Lunt LS60THa / B1200 / LS60Fha / DMK51AOU2 / DMK21AOU2 / Revelation 6 & 8" RC / Opticon Minitower 11 & Startracker / Mad Red Setter and understanding Wife
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Re: Williams 102 mod?
I am now going to consider whether to carry out a mod or invest in a new telescope all together, a mod may not be the answer. Thanks again
Robin
Hi Robin
maybe I do not understand english very well, but you could consider next time, when you set up a help mod question, to narrow down the search field a little bit
Robin
Hi Robin
maybe I do not understand english very well, but you could consider next time, when you set up a help mod question, to narrow down the search field a little bit
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
from 7 am - 7 pm http://www.nanosys.ch
from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa
Re: Williams 102 mod?
OK. query now resolved thanks. Your English is very good
Robin
Robin
Lunt LS60THa / B1200 / LS60Fha / DMK51AOU2 / DMK21AOU2 / Revelation 6 & 8" RC / Opticon Minitower 11 & Startracker / Mad Red Setter and understanding Wife