[Mr Jack Martin]

Alan,

You are not getting in my way.

This information was previously unknown.

Thanks for your efforts.

Jack

Essex UK 

[Mr Jack Martin]

Alan,

Doubtful, Blethyn’s telescopes date from around 1650.

Where did you get this information from ?

Its possible he was a relative of John Bleyghton a mathematical instrument maker in London around 1624-54. He was succeeded by his son John II. They also signed with the names Blaton – Blyton – Blighton.  

Thanks for your efforts.

Jack

Essex UK

[Mr Jack Martin]

Roy,

I discovered this telescope on a visit to Knebworth House in July 2019.

This is no 3 of only 2 other known Blethyn telescopes in the World.

Its been on display for decades unnoticed!

I am writing a short article about it for the Antique Telescope Society.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Andrew,

I did reinstall a second copy it has the same issues.

Regards,

Jack

[Mr Jack Martin]

Andrew,

I did not remove user files.

Will follow your instructions.

I have not renewed my subscription.

Regards,

Jack

[Mr Jack Martin]

Bill,

Probably from the same parent body.

Nice spectra.

Jack

[Mr Jack Martin]

Ray,

I don’t think Alain Ducasse, Gordon Ramsay, Jamie Oliver, Heston Blumenthal, Rachael Ray, Hugh Fearnley-Whittingstall, Paul Hollywood, Anne-Sophie Pic, Clare Smyth, Lisa Goodwin-Allen, Emma Bengtsson, Ainsley Harriot, John Trode, Marcus Wareing, some of whom are Michelin star chefs would agree with your comments, me included.

Jack  

[Mr Jack Martin]

David,

Just a bit of fun and its different, thanks for including in E&T News.

Jack

[Mr Jack Martin]

Some thoughts:

The planets in our solar system all come from the same building blocks.

Bacterial life in Venusian atmosphere is a theory, but Anding’s comment is plausible.

Or, have they discovered some unknown chemistry ?

Spectroscopy was the tool used to make the discovery !

Jack

Essex UK

[Mr Jack Martin]

Bill,

A good result, more interesting than un-interesting !

Well done.

Jack

[Mr Jack Martin]

Peter and Robin,

Thanks for your advices, very helpful.

Regards,

Jack

[Mr Jack Martin]

Following Owens excellent talk last night here are links to a book and app I referred to in Q&A.

https://www.springer.com/gb/book/9783662103920?token=sba20&utm_campaign=3_fjp8312_springer_gbp_shopping_sba20&gclid=EAIaIQobChMIjr2oyefi6gIVRrTtCh26zwn0EAQYAiABEgL1t_D_BwE

https://play.google.com/store/apps/details?id=com.vitotechnology.StarWalk2Free&hl=en_GB

I noted the many references to Spectroscopy !

Clear skies,

Jack

[Mr Jack Martin]

Astroshot,

What do you use the secure the eye bolts, can see something but not in detail ?

Regards,

Jack

[Mr Jack Martin]

Roy,

Thanks for the link, very informative.

Regards,

Jack

[Mr Jack Martin]

Astroshot,

Ingenious ! how long and what thread are the eyebolts ?

Regards,

Jack

[Mr Jack Martin]

Andy,

I don’t mind at all.

I thought Schmit C’s suffered from this, there was an issue with focussing, after winding the focussing knob backwards and forwards a few times (which has to be done regularly), spectra are much sharper, perhaps it was that.

Regards,

Jack 

[Mr Jack Martin]

Xilman,

Thanks for your feedback.

I have an Atik 314 mono attached to the 4 inch refractor, so the filter you recommend would be a good option, as I want to obtain research-quality results.

I have a Canon 400D DSLR, but from your description, the first option seems more straightforward.   

Regards,

Jack

[Mr Jack Martin]

Robin,

Thanks for your efforts.

Regards,

Jack 

[Mr Jack Martin]

David,

These bolts were not supplied with my previously owned C14.

I just have the 2 transport locking bolts 1″ long.

Rother Valley optics cannot obtain these accessories. I will try 365 Astronomy.

Regards,

Jack  

[Mr Jack Martin]

Thank you all for your responses which filter(s) do you recommend and from where ?

Regards,

Jack

[Author]

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