[Mr Jack Martin]

David,

I glad you solved the problem.

Paul,

I have not heard of this problem with the 414ex, but the one I had suffered from interference fringes especially visible on the flats, caused by the glass cover over the chip, so I exchanged for the 460 ex which works well.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Robin,

Congratulations I echo Jeremy’s comments.

Regards,

Jack

Essex UK 

[Mr Jack Martin]

Hugh,

Interesting to see how the H beta line is changing.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Robin,

Excellent work an interesting pattern.

What is chromatism ?

Regards,

Jack

Essex UK

[Mr Jack Martin]

Steve,

Nice spectra.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Here is the latest VV Cephei H alpha emission profile for 2017-08-24.

Regards,

Jack

Essex UK  

[Mr Jack Martin]

Robin,

Are you monitoring the H alpha line ?

Regards,

Jack

Essex UK

[Mr Jack Martin]

Robin,

I have followed your instructions and opened the file in BASS.

Thank you,

Jack

Essex UK 

[Mr Jack Martin]

Paul,

Thank you for your encouragement, its good to know others are following the forums.

Onwards and upwards.

Regards,

Jack

Essex UK

[Mr Jack Martin]

No changes in H Alpha emission profile as of 2017-08-13, I am continuing to monitor.

Jack

Essex UK

[Mr Jack Martin]

Robin,

I will open your fits file in my other computer which has the appropriate program.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Robin,

This was just a 300 s raw exposure uncalibrated, no dark or flat frames just to check if the h alpha line has changed.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Robin,

The response I am waiting for is if you are able to do a comparison between the spectra obtained by Marc and my spectra, as taken with Marcs C11 and my C14.

Please refer to Marcs previous post for info.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Robin,

I can’t open your attachment.

Regards,

Jack

Essex UK 

[Mr Jack Martin]

Andy,

You mean like this, the latest ‘quick’ spectrum of vv cep taken around 22.00 hr 2017-08-10 revealing no changes in the h alpha profile yet.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Andy,

In our last communication I measured the resolution and inserted it the fits file.

I have posted a png file of my latest ‘quick’ spectrum of the h alpha profile of vv cep.

Regards,

Jack

Essex UK   

[Mr Jack Martin]

Marc,

I am awaiting Robins response on this one.

Also, just a minor point to resolve before I can upload spectra to the database.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Marc,

I can send data to Robin for analysis who can post comparative results on this forum for the benefit of all. 

Jack

Essex UK

[Mr Jack Martin]

Steve,

I will follow your instructions.

Thanks for your response.

Jack

Essex UK 

[Mr Jack Martin]

Robin,

I am keen to submit my data for further analysis as suggested by Marc, BUT I use BASS not ISIS to do my data reduction.

Thank you for your input, any further comments welcome.

Jack

Essex UK

[Author]

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